American Federation of Labor and Congress of Industrial Organizations v. NLRB ( 2023 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued May 14, 2021                Decided January 17, 2023
    No. 20-5223
    AMERICAN FEDERATION OF LABOR AND CONGRESS OF
    INDUSTRIAL ORGANIZATIONS,
    APPELLEE
    v.
    NATIONAL LABOR RELATIONS BOARD,
    APPELLANT
    Consolidated with 20-5226
    Appeals from the United States District Court
    for the District of Columbia
    (No. 1:20-cv-00675)
    Paul A. Thomas, Attorney, National Labor Relations
    Board, and Tyler James Wiese, Attorney, argued the causes for
    appellant/cross-appellee. With them on the briefs were Nancy
    E. Kessler Platt, Associate General Counsel, William G.
    Mascioli, Assistant General Counsel, Dawn L. Goldstein,
    Deputy Assistant General Counsel, Helene D. Lerner,
    Supervisory Attorney, and Molly G. Sykes, Attorney.
    2
    Matthew J. Ginsburg argued the cause for appellee/cross-
    appellant. With him on the briefs were Leon Dayan and
    Maneesh Sharma.
    Before: SRINIVASAN, Chief Judge, PILLARD and RAO,
    Circuit Judges.
    Opinion for the Court filed by Circuit Judge PILLARD.
    Opinion concurring in the judgment in part and dissenting
    in part filed by Circuit Judge RAO.
    PILLARD, Circuit Judge: Unique among major federal
    agencies, the National Labor Relations Board (NLRB or
    Board) sets almost all of its policy through adjudications rather
    than rules. That makes the object of this case—a 2019 NLRB
    rule—somewhat unusual. The American Federation of Labor
    and Congress of Industrial Organizations (AFL-CIO)
    challenges a rule governing the elections in which employees
    vote on whether to be represented by a union. The Board
    promulgated the 2019 Rule without notice and comment,
    asserting that it falls within the Administrative Procedure Act’s
    (APA) exception for “rules of agency organization, procedure,
    or practice.” 
    5 U.S.C. § 553
    (b)(A).
    The 2019 Rule undid a slate of changes pertaining to
    representation elections that the Board in 2014 had
    promulgated following notice and comment. The Board in
    2019 acted without notice and comment. And it acknowledged
    that the 2014 Rule had achieved its objective of significantly
    reducing the time between a representation petition, an
    election, and the certification of election results, and that
    reversing those changes would result in longer waits for
    elections and the benefits that flow from union representation.
    As the Board explained, and the AFL-CIO agrees, the changes
    3
    introduced by the 2014 Rule did not alter the rate at which
    unions win or lose elections. But the Board nonetheless
    promulgated the 2019 Rule, viewing it as an advisable set of
    changes to ensure fair and accurate voting, transparency and
    uniformity, certainty and finality, and efficiency.
    The NLRB argues that the National Labor Relations Act
    (NLRA or Act), 
    29 U.S.C. §§ 151-69
    , mandates direct review
    from the Board to the circuit court, see 
    id.
     § 160(f), and so asks
    us to treat this case arriving on its appeal from district court as
    if it were before us on a petition for direct review by the AFL-
    CIO challenging the 2019 Rule. The Board also asserts that,
    even if the district court had jurisdiction, it erred in holding that
    five challenged provisions of the Rule fall outside the APA’s
    procedural exception. The Board asks us to sustain those
    provisions even though they were not promulgated by notice
    and comment rulemaking. The AFL-CIO cross-appeals,
    arguing that the 2019 Rule as a whole is arbitrary and
    capricious and that the provision concerning ballot
    impoundment specifically is arbitrary and capricious and
    contrary to law.
    We hold that the statutory provision for direct review in
    federal appellate courts of NLRB orders regarding unfair labor
    practices did not divest the district court of jurisdiction over
    rules that are exclusively concerned with representation
    elections, as is the 2019 Rule. On the merits, we hold that the
    district court erred in concluding that none of the five
    challenged provisions comes within the procedural exception;
    we hold that two of them do. Those two are rules of agency
    procedure, so were validly promulgated without notice and
    comment. We affirm the district court’s invalidation of the
    rules regarding the eligible employee-voters list, the timeline
    for certification of election results, and election-observer
    eligibility. The AFL-CIO’s challenge to the 2019 Rule as
    4
    arbitrary and capricious when considered as a whole fails.
    Finally, we hold that the Rule’s impoundment provision is
    contrary to law, making it unnecessary to address whether it is
    also arbitrary and capricious.
    BACKGROUND
    The NLRA covers two important topics in labor relations:
    the protection of employees’ right to elect representatives of
    their choice, and the prevention of unfair labor practices. See
    
    29 U.S.C. §§ 158
    , 159. The Act addresses those topics in
    separate sections, with section 8 prohibiting unfair labor
    practices and providing for enforcement against them, see 
    id.
    § 158, and section 9 outlining the process for conducting
    elections by which employees may select unions to represent
    them, see id. § 159. As the Board explains in its Rule, the Act’s
    provisions regarding representation “protect the exercise by
    workers of full freedom of association, self-organization, and
    designation of representatives of their own choosing, for the
    purpose of negotiating the terms and conditions of their
    employment or other mutual aid or protection.”
    Representation-Case Procedures, Final Rule, 
    84 Fed. Reg. 69,524
    , 69,524 (Dec. 18, 2019) (hereinafter 2019 Rule). Union
    representation, where employees choose it, is a statutorily
    protected means of advancing many other employee rights and
    interests, including resolving grievances and bargaining
    collectively with employers.
    The NLRA provides for direct review in the federal
    appellate courts of at least some NLRB actions. Section 10 of
    the Act, titled “Prevention of unfair labor practices,” includes
    the Act’s only such grant of judicial review directly in a court
    of appeal. See 
    29 U.S.C. § 160
    (f). It provides:
    Any person aggrieved by a final order of the Board
    granting or denying in whole or in part the relief
    5
    sought may obtain a review of such order in any
    United States court of appeals in the circuit wherein
    the unfair labor practice in question was alleged to
    have been engaged in or wherein such person resides
    or transacts business, or in the United States Court of
    Appeals for the District of Columbia . . . .
    
    Id.
     The Act thus provides for direct appellate review of “a final
    order,” and places venue where “the unfair labor practice in
    question” took place. 
    Id.
     Nowhere does the Act specifically
    address review of Board actions pertaining to representation
    elections. The Act grants the NLRB general rulemaking
    authority in section 6, 
    id.
     § 156, and references rulemaking
    specific to representation and elections in section 9, id.
    § 159(c)(1). Nothing in either section addresses judicial review
    of NLRB rules as distinct from orders, whether the rules
    address unfair labor practices or representation elections.
    The Rule at issue here addresses the representation
    election process, which the NLRA describes in some detail.
    The Act outlines four basic steps for parties to follow to
    organize a secret-ballot election under Board supervision to
    determine whether a union will represent a group of employees.
    First, an employee, union, or employer may file a petition
    with the Board calling for an election among a particular group
    of employees, proposing the group as an appropriate “unit” of
    representation, and seeking either certification or, less
    commonly, decertification of a union as the employees’
    exclusive collective bargaining representative. See id.; 2019
    Rule, 84 Fed. Reg. at 69,524. Most petitioned-for elections are
    conducted pursuant to an election agreement reflecting the
    parties’ accord on details like the date of the election and the
    employees who may appropriately be included in the
    bargaining unit. Both before and after the Board’s 2014 Rule
    6
    changes, more than ninety percent of elections were conducted
    pursuant to agreements. See 2019 Rule, 84 Fed. Reg. at 69,528
    n.16.
    If the parties cannot reach an election agreement, the
    second step is a hearing to develop the record on which a
    Regional Director determines whether a “question of
    representation” exists, i.e., whether the petitioner filed a proper
    petition concerning a unit appropriate for collective bargaining,
    so eligible for an employee vote. See 
    29 C.F.R. § 102.64
    . If
    the proposed unit would not be appropriate for the purpose of
    collective bargaining, the Regional Director dismisses the
    petition; if it would be appropriate, the Regional Director issues
    a decision and direction of election setting parameters like the
    election date and the contours of the voting unit. Any party can
    file a request for Board review of the Regional Director’s
    decision and direction of election.
    The third stage is the election itself, in which employees
    vote by secret ballot for or against union representation. The
    parties and the Board may also challenge the eligibility of
    voters during the election, after which they may attempt to
    resolve any such challenges. Challenged ballots the validity of
    which remains unresolved are set aside, and the valid ballots
    are counted at the conclusion of the election. See 
    id.
     § 102.69.
    The parties litigate the validity of challenged ballots only if
    they are outcome determinative.
    Fourth, after the election, the Board, either itself or
    through its Regional Director, certifies the election results. See
    id. § 102.69(b). If a majority of employees voted for union
    representation, the union’s certification as the employees’
    representative obligates the employer to bargain with it in good
    faith and renders the failure to do so an unfair labor practice.
    See 
    29 U.S.C. § 158
    (a)(5). The post-election stage can also
    7
    include party objections to the conduct of the election, which
    the Regional Director investigates, potentially calling a post-
    election hearing to inform the decision on those objections. See
    
    29 C.F.R. § 102.69
    (c). A Regional Director’s decision on
    objections is subject to review by the Board in response to a
    party’s request. 
    Id.
     § 102.69(c)(2).
    The Board first promulgated a set of rules in 1961 setting
    forth steps and standards for the Board to follow in responding
    to petitions raising objections to representation elections—a
    process that the Board has come to refer to as “representation
    cases.” See Miscellaneous Amendments, 
    26 Fed. Reg. 3,885
    (May 4, 1961). Since then, the Board has acted to make a
    variety of minor, unchallenged amendments to those rules
    without prior notice or request for public comment. See
    Representation—Case Procedures, Final Rule, 
    79 Fed. Reg. 74,308
    , 74,310 (Dec. 15, 2014) (hereinafter 2014 Rule). In
    2011, the NLRB promulgated a final rule on representation
    cases after notice and comment, but that rule was challenged
    and invalidated because the Board acted without a quorum. See
    Chamber of Com. v. NLRB, 
    879 F. Supp. 2d 18
    , 20-21, 30
    (D.D.C. 2012). The Board regained a quorum and gave public
    notice and sought comment on the 2014 Rule, which was
    “almost identical” to its 2011 predecessor, AFL-CIO v. NLRB
    (AFL I), 
    466 F. Supp. 3d 68
    , 76 (D.D.C. 2020), and which was
    twice upheld in full, see Associated Builders & Contractors of
    Tex., Inc. v. NLRB, 
    826 F.3d 215
    , 218 (5th Cir. 2016); Chamber
    of Com. v. NLRB, 
    118 F. Supp. 3d 171
    , 177 (D.D.C. 2015).
    That 2014 Rule is the backdrop to the rule challenged here.
    The 2014 Rule made twenty-five changes to the then-
    existing rules for representation cases. See 79 Fed. Reg. at
    74,308-10. Two of the Board’s five members dissented. Id. at
    74,430-60; see also Representation-Case Procedures, Request
    for Information, 
    82 Fed. Reg. 58,783
    , 58,783 (Dec. 14, 2017)
    8
    (hereinafter 2017 RFI). The 2014 Rule went into effect on
    April 14, 2015, after President Obama vetoed the resolution
    Congress passed disapproving the Rule pursuant to the
    Congressional Review Act, 
    5 U.S.C. § 801
     et seq. See 2017
    RFI, 82 Fed. Reg. at 58,783.
    The Board promulgated the 2014 Rule by notice and
    comment rulemaking but asserted that “none of this process
    was required by law” and that “[t]he Board has never engaged
    in notice and comment rulemaking on representation case
    procedures, and all of the proposed changes could have been
    made without notice and comment—in part by adjudication,
    and in part by simply promulgating a final rule.” 79 Fed. Reg.
    at 74,311. In the Board’s view, its amendments were
    “primarily procedural,” any substantive changes “could have
    been made by adjudication,” and the rule was therefore
    “exempt from notice and comment” under the APA. See id. at
    74,311 n.9.
    In late 2017, the NLRB issued a request for information
    concerning the operation of the 2014 Rule. See 2017 RFI, 82
    Fed. Reg. at 58,783. It received nearly 7,000 submissions in
    response. The AFL-CIO, the largest federation of unions in the
    United States, made a submission that included an expert report
    on the effects of the 2014 Rule. The report analyzed data from
    a five-year period straddling the effective date of the 2014
    Rule, comparing the two and a half years of Board data on
    either side of the rule change. In the report, John-Paul
    Ferguson, “a leading academic expert on NLRB elections,”
    AFL-CIO Principal & Response Br. 6, explained that the 2014
    Rule changes produced “a significant decrease in the time
    between petition and election and the time between petition and
    the closing of [representation] cases,” Deferred Appendix
    (D.A.) 103. In contrast to the typical seventy-seven days from
    petition to closing of a representation case before the 2014
    9
    Rule, the average time dropped to fifty-six days after the rule.
    D.A. 110. Apart from shorter timelines from petition to
    certification, Ferguson concluded, the 2014 Rule did not cause
    “any other significant changes in case processing variables or
    outcomes.” D.A. 103. He found, among other things, that the
    2014 Rule did not change the rate at which unions win or lose
    elections, D.A. 108-09, nor the incidence or average length of
    pre- or post-election hearings, D.A. 111-12.
    Two years later, at a time when one Board seat remained
    unfilled following the end of former Chairman Pearce’s term
    in 2018, a divided four-member Board issued the 2019 Rule.
    See 84 Fed. Reg. at 69,524. The Board expressly invoked the
    procedural exception in section 553(b)(A) of the APA, 84 Fed.
    Reg at 69,528, and asserted that it was “not treating the
    responses to the 2017 Request for Information as notice-and-
    comment rulemaking,” id. at 69,528 n.12. All told, the Rule
    made fifteen changes to then-current provisions, many of
    which reinstated all or parts of the pre-2014 rules and a handful
    of which were new. See id. at 69,524-26 (concise descriptions),
    69,588-600 (amended rules). Board Member McFerran
    dissented from the 2019 Rule as having arbitrarily and without
    empirical support delayed employees’ enjoyment of their
    NLRA rights by, among other things, slowing the process in
    contested cases to the point of tripling the minimum number of
    days from the filing of a petition for an election to the
    certification of a union. Id. at 69,557-62.
    On March 6, 2020, the AFL-CIO filed a four-count
    complaint in district court, claiming that the 2019 Rule as a
    whole violated the APA, and that certain provisions were also
    independently invalid. The parties filed cross-motions for
    summary judgment. The Board also moved to transfer the case
    here from district court, arguing that subsection 10(f) of the
    10
    NLRA requires direct appellate review of any NLRB order or
    rule.
    On May 30, 2020, one day before the 2019 Rule was set to
    go into effect, the district court issued an order denying the
    Board’s motion to transfer and granting summary judgment to
    the AFL-CIO on the ground that five challenged provisions of
    the Rule did not fall within the APA’s procedural exception.
    About a week later, the court issued an opinion explaining
    those rulings. See AFL I, 466 F. Supp. 3d at 74. The AFL-CIO
    moved for reconsideration, requesting that the district court
    rule on its remaining claims. On July 1, 2020, the court issued
    a supplemental memorandum opinion and order denying the
    remainder of the AFL-CIO’s claims. See AFL-CIO v. NLRB
    (AFL II), 
    471 F. Supp. 3d 228
    , 234 (D.D.C. 2020).
    Our review of both the district court’s determination on
    jurisdiction and its rulings on summary judgment is de novo.
    DISCUSSION
    I.   Jurisdiction
    The Board first argues that subsection 10(f) of the NLRA,
    which all agree provides direct review in federal appellate
    courts of at least some “final order[s] of the Board,” 
    29 U.S.C. § 160
    (f), should be read to require direct circuit-court review
    of the AFL-CIO’s challenge to the 2019 Rule. The Board does
    not identify any material effect of that position on our
    consideration of this case: Our review is de novo in any event,
    and the AFL-CIO’s filing here concededly would be timely
    even were we to treat it as a petition for direct review. But
    11
    because it reads the statute to require direct review, the Board
    urges us to exercise original rather than appellate jurisdiction.
    The text of section 10(f) is seemingly limited to orders
    regarding unfair labor practices, and we are reviewing a rule
    unrelated to such practices. But we have held that direct-
    review statutes providing for our review of “orders” authorize
    us to review rules. N.Y. Republican State Comm. v. SEC
    (NYRSC), 
    799 F.3d 1126
    , 1129-30, 1133 (D.C. Cir. 2015); Inv.
    Co. Inst. v. Bd. of Governors of the Fed. Rsrv. Sys., 
    551 F.2d 1270
    , 1278 (D.C. Cir. 1977); see also Fla. Power & Light Co.
    v. Lorion, 
    470 U.S. 729
    , 737 (1985). That approach makes
    good sense here, because when Congress enacted the NLRA in
    1935 “courts generally declined to engage in pre-enforcement
    review of agency rules,” NYRSC, 
    799 F.3d at 1134
    , so
    Congress spoke of “orders” as shorthand for final agency
    action.
    There is some reason to think Congress’s reference to “the
    unfair labor practice in question” in its direct-review
    authorization encompasses judicially reviewable Board rules
    governing representation procedures. It is at least conceivable
    that the direct-review provision is limited to “unfair labor
    practice” orders because Congress provided for review of
    representation disputes only via review of “orders of the Board
    prohibiting unfair labor practices,” AFL v. NLRB, 
    308 U.S. 401
    , 409 (1940); see Nat’l Hot Rod Ass’n v. NLRB, 
    988 F.3d 506
    , 508 (D.C. Cir. 2021), not because Congress sought to treat
    representation rules differently from unfair labor practice rules.
    As a practical matter, it is not apparent why challenges to
    representation rules should be heard first in the district court
    while challenges to unfair labor practice rules come directly
    here: Both are decided on the administrative record and benefit
    from prompt resolution. Our precedent, moreover, takes a
    generous approach to direct-review statutes: Where Congress
    12
    gives us mixed signals, we resolve statutory ambiguity in favor
    of direct review in the courts of appeals. See Nat’l Auto.
    Dealers Ass’n v. FTC, 
    670 F.3d 268
    , 270 (D.C. Cir. 2012).
    That said, we are ultimately unpersuaded that any
    implications from the vintage of the NLRA or policy
    arguments for a common review path suffice to overcome the
    textual reference to “unfair labor practice” in subsection 10(f)
    and other statutory indicia that distinguish unfair labor practice
    rules from those addressing representation procedures. “In this
    circuit, the normal default rule is that persons seeking review
    of agency action go first to district court rather than to a court
    of appeals.” 
    Id.
     (internal quotation marks and citations
    omitted). It is the exception that “[i]nitial review of agency
    decisions occurs at the appellate level”—an exception reserved
    for cases as to which “a direct-review statute specifically gives
    the court of appeals subject-matter jurisdiction to directly
    review agency action.” 
    Id.
     (internal quotation marks and
    citations omitted).
    Applying those principles to the text of subsection 10(f)
    and the overall structure of the NLRA, we hold that the district
    court correctly exercised jurisdiction over the AFL-CIO’s
    challenge to the 2019 Rule. Section 10 of the NLRA,
    addressing the “[p]revention of unfair labor practices,” 
    29 U.S.C. § 160
    , provides for direct review in federal courts of
    appeals from some final actions of the Board, 
    id.
     § 160(f).
    Subsection 10(f) specifies that review may be had in this court
    or “in the circuit wherein the unfair labor practice in question
    was alleged to have been engaged” (or, although not relevant
    here, in the circuit wherein the petitioner “resides or transacts
    business”). Id. The district court correctly reasoned that
    subsection 10(f)’s textual reference to unfair labor practices,
    combined with the absence of any mention of determinations
    governing representation or elections, “strongly suggests that
    13
    the provision is only triggered when some kind of unfair labor
    practice is at issue.” AFL I, 466 F. Supp. 3d at 84. The
    statutory phrase defining appellate-court venue options by
    reference to “the unfair labor practice in question,” a specific
    iteration of a broader category, implies that the overall
    provision’s object is that category—unfair labor practices—
    which does not include NLRA rules regarding representation
    elections. 
    29 U.S.C. § 160
    (f) (emphases added).
    It is undisputed that unfair labor practices—whether
    specifically or in general—are not at issue in this pre-
    enforcement challenge to the 2019 Rule, which concerns
    exclusively elections regarding union representation. And
    nowhere in subsection 10(f) or anywhere else in section 10 is
    there any reference to elections or representation. Rather,
    subsection 10(f) communicates “that what is being directed to
    the court of appeals” for the purpose of direct review is NLRB
    final orders (and, per binding precedent, rules) concerning
    unfair labor practices. AFL I, 466 F. Supp. 3d at 84.
    The placement of the direct-appellate-review provision
    within section 10 confirms that conclusion. To start, the
    section title, “Prevention of unfair labor practices,” announces
    its topical focus. 
    29 U.S.C. § 160
    ; see Almendarez-Torres v.
    United States, 
    523 U.S. 224
    , 234 (1998). And the subsections
    surrounding 10(f) make explicit their concern with unfair labor
    practices. Cf. Territory of Guam v. United States, 
    141 S. Ct. 1608
    , 1613 (2021) (considering the “family” of provisions
    when interpreting one specific provision). Subsection 10(a)
    empowers the Board “to prevent any person from engaging in
    any unfair labor practice (listed in section 158 of this title)
    affecting commerce.” 
    29 U.S.C. § 160
    (a). Subsection 10(b)
    describes the Board’s power to issue and pursue complaints
    regarding charges of unfair labor practices. See 
    id.
     § 160(b).
    Subsection 10(c) states that if, after taking testimony and
    14
    potentially hearing argument on an unfair labor practice
    charge, the Board believes that an unfair labor practice has
    occurred, it shall, among other things, issue “an order
    requiring such person to cease and desist from such unfair
    labor practice.” Id. § 160(c). And subsection 10(e), in terms
    parallel to 10(f), allows the Board to petition for enforcement
    of its orders in any circuit court “wherein the unfair labor
    practice in question occurred or wherein such person resides
    or transacts business.” Id. § 160(e). This context suggests
    that, like its sister provisions, 10(f) is concerned solely with
    unfair labor practices, not representation matters.
    The structure of the entire NLRA underscores Congress’s
    separate treatment of unfair-labor-practice and union-
    representation matters, further clarifying that subsection 10(f)
    applies only to the former. As described above, Congress
    addressed those two core categories of issues in separate
    statutory sections: representation matters in section 9, id.
    § 159, and unfair labor practices matters in section 8, id. § 158.
    That structural separation reinforces that subsection 10(f)—
    with its express reference to unfair labor practices but no
    mention of representation—does not extend to the
    representation-case rules at issue here.
    Against those textual and structural indicia, the Board’s
    counterarguments fall short. First, the Board’s principal
    argument attacks a strawman. The Board points out that we
    have held that the term “order” in other direct-review statutes
    encompasses agency rules, see NLRB Principal Br. 18-23
    (citing NYRSC, 
    799 F.3d at 1129-30, 1133
    ; Inv. Co. Inst., 
    551 F.2d at 1278
    ), and asserts that subsection 10(f) is ambiguous as
    to whether its use of the term “order” includes NLRB rules like
    the one at issue here. True enough. But the obstacle is not that
    subsection 10(f)’s reference to “orders” bars us from reviewing
    a rule. The difficulty for the Board is the subject matter not the
    15
    form of the challenged agency action. As the district court
    explained, subsection 10(f) is inapplicable “because the
    NLRB’s action regulates representation rather than unfair labor
    practices.” AFL I, 466 F. Supp. 3d at 87. In other words,
    subsection 10(f) is not “ambiguous in any sense relevant,”
    Nat’l Auto. Dealers Ass’n, 
    670 F.3d at 270
     (citation omitted),
    because—even accepting that “final order” also extends to
    rules—the provision applies to rules concerning unfair labor
    practices, not representation cases.
    Second, the Board cannot dismiss subsection 10(f)’s
    reference to unfair labor practices as merely a “venue
    provision.” NLRB Principal Br. 29. The Board argues that, by
    including that reference, Congress did nothing more than
    “suppl[y] petitioners seeking review of unfair labor practice
    cases with an additional convenient forum” in the place where
    the unfair labor practice is alleged to have occurred. 
    Id.
     The
    reference to unfair labor practices qualifies only the venue
    clause, the Board says, while the rest of the subsection
    “remains perfectly operative” as “a very plain, general grant of
    jurisdiction to circuit courts to review all ‘final orders of the
    Board granting or denying in whole or in part the relief
    sought’”—including final actions not involving unfair labor
    practices. 
    Id.
     (quoting 
    29 U.S.C. § 160
    (f)). But, as the district
    court acknowledged, subsection 10(f)’s inclusion of a venue-
    expanding clause does not detract from textual and structural
    specifications that “the subject of a petition for review that is
    filed with the court of appeals under [subsection 10(f)] must be
    an NLRB action that pertains to unfair labor practices as
    opposed to any other topic that the agency might have acted to
    address.” AFL I, 466 F. Supp. 3d at 86 (emphasis in original).
    We are somewhat puzzled by Congress’s decision to
    provide for direct review in this court for unfair labor practice
    cases but not for representation matters, given that both types
    16
    of cases are heard on agency records and would seem to benefit
    equally from quick resolution in our court. But we cannot
    rewrite the statute to resolve what seems a quirk. Thus,
    pursuant to 
    28 U.S.C. § 1331
    , the district court had jurisdiction
    over the AFL-CIO’s challenge to the 2019 Rule, and we
    exercise appellate jurisdiction under 
    28 U.S.C. § 1291
     to
    review its judgment.
    II. The APA’s Procedural Exception to Notice and
    Comment
    The Board next challenges the district court’s ruling that
    the APA’s procedural exception is inapplicable. The district
    court held that the Board violated the APA by promulgating
    each of the five challenged provisions of the 2019 Rule without
    engaging in notice and comment rulemaking. The Board
    claims the five challenged provisions are exempt from the
    APA’s notice and comment requirements as rules of agency
    procedure under 
    5 U.S.C. § 553
    (b)(A).
    In general, the APA requires agencies to publish notice of
    proposed rules in the Federal Register and to accept and
    consider comments on them from the public. See 
    5 U.S.C. § 553
    (b)-(c). Those requirements are central to the APA’s
    “commitment to public notice and participation.” Batterton v.
    Marshall, 
    648 F.2d 694
    , 700 (D.C. Cir. 1980). Public
    participation helps to ensure that regulators are factually well
    informed and have the benefit of alternative solutions that
    commenters may suggest. See 
    id. at 703-04
    . Rulemaking that
    acknowledges and responds to expressed needs and concerns
    of regulated parties and the affected public tends to be more
    readily accepted by winners and losers alike. See Guardian
    Fed. Sav. & Loan Ass’n v. Fed. Sav. & Loan Ins. Corp., 
    589 F.2d 658
    , 662 (D.C. Cir. 1978).
    17
    In keeping with the statutory commitment to public
    participation in rulemaking, “the APA provides only limited
    exceptions to [its notice and comment] requirements.”
    Batterton, 
    648 F.2d at 700-01
    ; see 
    id. at 704
    . One such
    exception is for “rules of agency organization, procedure, or
    practice.” 
    5 U.S.C. § 553
    (b)(A). We have used the term
    “procedural exception” as shorthand for that exemption, see,
    e.g., Pub. Citizen v. Dep’t of State, 
    276 F.3d 634
    , 640 (D.C.
    Cir. 2002) (quoting JEM Broad. Co. v. FCC, 
    22 F.3d 320
    , 328
    (D.C. Cir. 1994)), and we have referred to rules promulgated
    under it as “procedural rules,” see, e.g., Mendoza v. Perez, 
    754 F.3d 1002
    , 1023 (D.C. Cir. 2014). But, as the text of the APA
    makes clear, not all rules that might be categorized as
    procedural are exempted; the limited carveout is intended for
    “internal house-keeping measures organizing agency
    activities.” Am. Hosp. Ass’n v. Bowen, 
    834 F.2d 1037
    , 1045
    (D.C. Cir. 1987) (quoting Batterton, 
    648 F.2d at 702
    ). And its
    purpose is “to ensure that agencies retain latitude in organizing
    their internal operations.” Mendoza, 
    754 F.3d at 1023
     (quoting
    Batterton, 
    648 F.2d at 707
    ); accord Bowen, 
    834 F.2d at 1047
    .
    We treat rules as procedural if they are “primarily directed
    toward improving the efficient and effective operations of an
    agency.” Mendoza, 
    754 F.3d at 1023
     (quoting Batterton, 
    648 F.2d at
    702 n.34). “[T]he critical feature of a rule that satisfies
    the so-called procedural exception is that it covers agency
    actions that do not themselves alter the rights or interests of
    parties, although it may alter the manner in which the parties
    present themselves or their viewpoints to the agency.” James
    V. Hurson Assocs., Inc. v. Glickman, 
    229 F.3d 277
    , 280 (D.C.
    Cir. 2000) (internal quotation marks omitted). Where a rule
    imposes “substantive burden[s],” Bowen, 
    834 F.2d at 1052
    ,
    “encodes a substantive value judgment,” Pub. Citizen, 276 F.3d
    at 640 (quoting Bowen, 
    834 F.2d at 1047
    ), “trenches on
    substantial private rights [or] interests,” Mendoza, 
    754 F.3d at
    18
    1023 (quoting Batterton, 
    648 F.2d at 708
    ), or otherwise
    “alter[s] the rights or interests of parties,” Nat’l Min. Ass’n v.
    McCarthy, 
    758 F.3d 243
    , 250 (D.C. Cir. 2014) (quoting
    Glickman, 
    229 F.3d at 280
    ), it is not procedural for purposes of
    the section 553 exemption. At bottom, the exception for
    “internal house-keeping measures,” Bowen, 
    834 F.2d at 1045
    ,
    “must be narrowly construed,” Elec. Priv. Info. Ctr. v. U.S.
    Dep’t of Homeland Sec. (EPIC), 
    653 F.3d 1
    , 6 (D.C. Cir. 2011).
    These precedents represent this court’s current and consistent
    approach. Cf. Diss Op. 1, 5.
    The 2019 Rule governs how the Board supervises
    representation elections that determine whether a union will
    represent a group of employees. Many of the Board’s
    representation-election provisions, including provisions of the
    2019 Rule, govern or directly affect regulated parties—
    employers, unions, and employees—and their substantive
    rights in relation to one another during representation elections.
    That means much of the election conduct the Board regulates
    is not internal “agency action[].” Glickman, 
    229 F.3d at 280
    .
    In other words, the Board’s role in supervising elections does
    not convert all representation-election rules into rules of
    internal agency procedure.          That said, some of the
    representation-election provisions do regulate how the parties
    present disputes to the Board and the process for its decision.
    Thus, some but not all of the Board’s rules are “primarily
    directed toward improving the efficient and effective
    operations of [the] agency,” Mendoza, 
    754 F.3d at 1023
    (quoting Batterton, 
    648 F.2d at
    702 n.34), or toward “the
    manner in which [regulated] parties present themselves or their
    viewpoints to the agency,” Glickman, 
    229 F.3d at 280
     (quoting
    JEM Broad. Co., 
    22 F.3d at 326
    ).
    We hold that three of the challenged provisions—those
    regarding employers’ production of voter lists, the delayed
    19
    certification of election results, and who may serve as election
    observers—fall outside the scope of the procedural exception.
    As detailed below, the voter-list provision trenches on the
    union’s substantive interest in campaigning on equal footing
    with the employer. The provisions delaying certification cut
    back on an employer’s legal duty post-election to bargain in
    good faith, effectively eliminating that duty during the
    pendency of a request for review or, in the absence of such a
    request, until the time for seeking Board review has passed.
    And the election-observer provision establishes new
    substantive criteria for selecting observers that directly affect
    regulated parties’ interests in fair elections. Those provisions
    all substantively “alter the rights or interests of parties,”
    Glickman, 
    229 F.3d at 280
     (quoting JEM Broad. Co., 
    22 F.3d at 326
    ), and therefore do not qualify as procedural rules for
    purposes of the section 553 exemption.
    However, two of the challenged provisions—those
    regarding pre-election litigation of certain issues and a related
    change to election scheduling—are procedural rules within the
    meaning of section 553(b)(A). Both provisions are “primarily
    directed toward” internal agency operations, Mendoza, 
    754 F.3d at 1023
     (quoting Batterton, 
    648 F.2d at
    702 n.34), insofar
    as they each govern the presumptive timing of when the
    Regional Director will resolve election-related disputes prior to
    an election. The Board therefore permissibly issued those
    provisions without notice and comment. We discuss each
    provision in turn, beginning with the substantive rules.
    A. Substantive Rules
    1. Voter list
    Once a Regional Director issues a direction of election
    following a pre-election hearing, the employer must provide
    both the union and the Board with a list of the names, job
    20
    details, and contact information for all eligible employee-
    voters. See 
    29 C.F.R. § 102.67
    (l); see also 2019 Rule, 84 Fed.
    Reg. at 69,531 & n.28. The Board does not seriously dispute
    that the primary purpose of that voter list is to facilitate the
    union’s campaign activities because, before receiving the list,
    the union generally does not have the same ability as the
    employer to contact employee-voters. Under the 2019 Rule, an
    employer has five business days from the issuance of the
    direction of election to provide the voter list. 84 Fed. Reg. at
    69,596-97 (codified at 
    29 C.F.R. § 102.67
    (l)). By contrast, the
    2014 Rule required an employer to provide it within two
    business days. 79 Fed. Reg. at 74,486.
    We conclude that the voter-list provision falls outside the
    section 553 exception for “rules of agency organization,
    procedure, or practice.” 
    5 U.S.C. § 553
    (b)(A). By changing
    the timeline for transmission of the voter list, the provision
    directly addresses the union’s ability to contact employees on
    equal terms with the employer. The voter-list provision
    thereby “alter[s]” regulated parties’ substantive “rights [and]
    interests” in relation to each other. Glickman, 
    229 F.3d at 280
    (quoting JEM Broad. Co., 
    22 F.3d at 326
    ). The Supreme Court
    has acknowledged that the Board’s requirement that employers
    share voter lists supports the NLRA-protected right of “fair and
    free choice of bargaining representatives,” in part by “allowing
    unions the right of access to employees that management
    already possesses.” NLRB v. Wyman-Gordon Co., 
    394 U.S. 759
    , 767 (1969). By delaying the employer’s obligation to
    share with the union the employee-voters’ contact information,
    the provision “trenches on” the union’s substantive interest in
    campaigning on equal footing with the employer. Mendoza,
    
    754 F.3d at 1023
     (quoting Batterton, 
    648 F.2d at 708
    ). It
    therefore does not qualify as procedural for purposes of the
    section 553 exception. See 
    id.
    21
    The voter-list provision is also neither facially nor
    materially directed at “internal house-keeping.” Bowen, 
    834 F.2d at 1045
    . It does not govern internal agency operations,
    nor is it principally directed at the “manner in which [regulated]
    parties present themselves or their viewpoints to the agency,”
    Glickman, 
    229 F.3d at 280
     (quoting JEM Broad. Co., 
    22 F.3d at 326
    ). Instead, it primarily facilitates the transmission of
    information between parties, not from a party to the Board. See
    Mendoza, 
    754 F.3d at 1024
     (deeming substantive agency’s
    employer-certification procedures that set terms of employer-
    employee relationships). And it does so outside the context of
    any agency proceeding. The voter-list provision thus bears
    none of the hallmarks of a rule that would fall within the
    procedural exception.
    The Board does not dispute the importance of voter lists to
    the union’s ability to campaign, nor the reality that the shift
    from two days to five within the twenty-day default pre-
    election period extends the time when the employer has
    exclusive use of employee-voters’ contact information.
    Instead, Board counsel argues that the voter lists also help the
    Board conduct elections. The lists, for example, separately
    identify the employees who are casting their votes subject to
    challenge, thus making it easier for the Board to identify them.
    But that seemingly slight convenience to the Board does not
    obviate the rule’s substantive character. Given that the union’s
    substantive interest in campaigning on equal footing with the
    employer is impaired until the employer produces the voter list,
    postponing that production necessarily burdens the union’s
    substantive interest. See Mendoza, 
    754 F.3d at 1023
    . And,
    tellingly, the Board did not even mention its asserted
    convenience rationale in the rulemaking.
    The Board in its reply brief tries to brush off the delay as,
    in any event, “de minimis.” NLRB Response & Reply Br. 26.
    22
    That rationale, too, is absent from the rulemaking; indeed, to
    the contrary, in support of the 2019 change the Board stressed
    the significance of the added time—for employers. See 2019
    Rule, 84 Fed. Reg at 69,531-32. And we are unpersuaded by
    the Board’s suggestion that extension of the time to set
    elections, discussed below, cancels out the delayed provision
    of the voter list to a union, somehow making the voter-list delay
    procedural. NLRB Principal Br. 61; 2019 Rule, 84 Fed. Reg.
    at 69,532. The pre-election period is now presumptively set at
    twenty days but is often shorter. And, in any event, a three-day
    head start on campaigning by employers before a union can
    even access employee contact information to reach potential
    voters is not erased by the addition of other days both parties
    might use to campaign. The asymmetry of three additional
    days of employers’ exclusive access to employee-voters’
    contact information substantively burdens the union’s ability to
    campaign on equal footing.
    Reference to pre-2014 practice likewise does nothing to
    dispel the AFL-CIO’s concerns about the disparity under the
    2019 Rule between unions’ and employers’ ability to
    campaign. Before the 2014 Rule, an employer had to provide
    the union with the voter list within seven calendar days from
    the issuance of the direction of election, which is generally
    equivalent to the five business days specified in the 2019 Rule.
    See 2019 Rule, 84 Fed. Reg. at 69,530-31. When the Board
    shortened the time to two days in the 2014 Rule, it pointed to
    widespread advances in recordkeeping, retrieval, and
    transmission technology since it first recognized unions’ right
    to voter lists in Excelsior Underwear, Inc., 
    156 NLRB 1236
    ,
    1239-40 (1966), as obviating the basis for the original seven-
    day period. See 2014 Rule, 79 Fed. Reg. at 74,353. The 2014
    Rule preamble noted that under the prior rule—in addition to
    the two out of seven days treated as “lost to the weekend”—
    employers operating under Excelsior before the advent of e-
    23
    mail and even express delivery services were allocated “3 more
    days . . . dedicated to service of the list by regular mail.” 79
    Fed. Reg. at 74,353. Excelsior’s own reasoning thus suggests
    that, without need to rely on the postal service, employers can
    provide the lists to unions within two days. To the extent the
    Board nonetheless wishes to revert to granting employers more
    time than that to provide the lists to unions, it must make such
    a substantive change through notice and comment procedures.
    Finally, the Board and our dissenting colleague liken
    delayed provision of the voter list to “changing the timeline for
    filings with an agency,” NLRB Principal Br. 61; see Diss. Op.
    10 (citing Lamoille Valley R.R. Co. v. Interstate Com. Comm’n,
    
    711 F.2d 295
    , 328 (D.C. Cir. 1983)), as a reason to treat it as a
    “rule[] of agency organization, procedure, or practice,”
    
    5 U.S.C. § 553
    (b)(A). But the voter-list provision does not set
    timelines for an agency’s internal processes, nor is it
    principally about submissions to the agency in support of such
    process. Our precedent examining “timetable[s] for asserting
    substantive rights” before an agency, Lamoille, 711 F.2d at
    328, is, thus, readily distinguished.
    The voter-list provision’s substantive character is instead
    established through the antecedent inquiry whether the Board’s
    rule “alter[s],” Glickman, 
    229 F.3d at 280
    , or otherwise
    “trenches on” a substantive right or interest, Mendoza, 
    754 F.3d at
    1023—here, the union’s interest in campaigning on equal
    footing with the employer. Again, the provision primarily
    facilitates the transmission of information between parties to
    “allow[] unions the right of access to employees that
    management already possesses.” Wyman-Gordon, 
    394 U.S. at 767
    . And it directly affects the parties’ primary interest in free
    and fair bargaining-unit elections. See 
    id.
     Because it impairs
    a substantive interest, it is subject to the APA’s notice and
    comment requirements.
    24
    In sum, considering the “primary benefit” of the voter list
    to help the union communicate with employee-voters in the
    run-up to an election, NLRB Response & Reply Br. 27, and the
    lack of any significant basis to treat this provision as a rule of
    agency operations, we conclude the delayed voter-list
    provision determines parties’ rights or interests and is
    substantive. Accordingly, it should have been subjected to
    public notice and comment. See Mendoza, 
    754 F.3d at 1023
    .
    Because it was not, it is hereby vacated and remanded.
    2. Delayed certification
    If employees favoring the union win an election and the
    Board, or its Regional Director by delegation, certifies the
    union as the employees’ representative, the Act then requires
    the employer to bargain in good faith with the union. See 
    29 U.S.C. § 158
    (a)(5); see also 2019 Rule, 84 Fed. Reg. at 69,554.
    Since the 2014 Rule went into effect, a party may file a request
    for Board review of the decision and direction of election even
    after the election has occurred. Parties may also file with the
    Regional Director objections to the conduct of the election and,
    if unsuccessful, may seek Board review of the Regional
    Director’s decision on those objections. See 2019 Rule, 84
    Fed. Reg. at 69,526, 69,553-54 (citing 
    29 C.F.R. § 102.67
    (c)).
    Under the 2019 Rule, a Regional Director will certify
    election results only after she has resolved any requests for
    review concerning the decision and direction of election or
    objections to the conduct of the election or, in the absence of
    such filings, after the time for seeking Board review has passed.
    See 84 Fed. Reg. at 69,597-99 (codified at 
    29 C.F.R. § 102.69
    (b), (c)); see also 
    id. at 69,526
    . The 2014 Rule, in
    contrast, provided that a Regional Director would certify
    election results without regard to whether a request for review
    25
    was pending or still might be timely filed. See 79 Fed. Reg. at
    74,487; see also 2019 Rule, 84 Fed. Reg. at 69,526, 69,554.
    We hold that the provisions delaying certification of
    election results fall outside the APA’s procedural exception
    because they directly curtail the protective effect on employees
    of the rights and interests that flow from the election of a
    representative of their choosing. Delaying certification also
    suspends the attachment of an employer’s legal duty to bargain
    with a union that has won an election. Such a change “trenches
    on substantial private rights and interests,” necessitating notice
    and comment before it is made. Mendoza, 
    754 F.3d at 1023
    (citation omitted).
    In its briefing, the AFL-CIO explains that delayed
    certification prevents unions from bargaining on behalf of
    employees—sometimes “for a significant period of time, even
    years.” AFL-CIO Principal & Response Br. 39. For
    employees who voted for a union expecting it would bargain
    for better terms and conditions of employment, delayed
    certification deprives them of a key benefit during that entire
    period. See 
    id.
     Such deprivation may also erode employees’
    support for a union that seems unable to deliver promptly on its
    promise. See 
    id.
     At oral argument, the AFL-CIO elaborated
    on those points, referencing the challenge of “bargain[ing] a
    first contract,” Oral Arg. Tr. 37:3-4, and the difficulty “for a
    union to maintain [its] cohesion during that period” after it has
    won an election but not yet been able to bargain because
    certification is delayed, id. at 39:14-15.
    The AFL-CIO also emphasizes the importance of, first, the
    effect of delayed certification on an employer’s duty to bargain
    in good faith and, second, its effect on the duty not to make
    unilateral changes in terms and conditions of employment
    during the term of an existing collective bargaining agreement.
    26
    See id. at 37:14-38:1. The Board argues that the effects of
    delay are remediable but addresses only the second of those
    two effects. It points out that the obligation to refrain from
    making any unilateral changes extends back to the date of the
    election, not certification, meaning that, if an employer makes
    unilateral changes but the union is ultimately certified, those
    changes can be challenged as unfair labor practices. See NLRB
    Principal Br. 63 & n.174; see also Oral Arg. Tr. 37:17-19. But
    an employer’s duty to bargain in good faith to reach agreement
    on terms and conditions of employment—a duty it owes even
    to employees not yet covered by any collective bargaining
    agreement—originates on the date of certification. See Oral
    Arg. Tr. 37:19-23; see also NLRB Principal Br. 63. Thus,
    unions and the employees they represent have no opportunity
    to later redress delayed certification’s impairment of their new
    right to bargain for terms of employment.
    The Board and dissent do not contest those assertions. Nor
    do they deny that an employer’s duty to bargain arises at
    certification, such that delaying certification eliminates
    employees’ right to have their union promptly engage in
    collective bargaining on their behalf post-election. See NLRB
    Principal Br. 63 (distinguishing between “the duty to bargain
    in good faith” and “other duties, such as an employer’s
    obligation to refrain from making unilateral changes” that
    “extend back to the date of the election, not certification”); Oral
    Arg. Tr. 46:6-8 (Board counsel stating that, “outside of this
    specific bargaining obligation, virtually every other
    meaningful right that attaches to the union representation issue
    goes back to the election”); Diss. Op. 11-15.
    In characterizing the delayed-certification provisions as
    rules of agency procedure, the Board and dissent insist that,
    “[a]s a practical matter,” delayed certification has “de minimis
    impact on unions.” NLRB Principal Br. 63; see Diss. Op. 13.
    27
    According to the Board, its “regional offices generally have not
    issued unfair labor practice complaints asserting that
    employers were not bargaining pursuant to certifications that
    are subject to pending requests for review.” NLRB Principal
    Br. 63 (citing D.A. 217 (2019 Rule, 84 Fed. Reg. at 69,555));
    see also Diss. Op. 13. In effect, the Board and our dissenting
    colleague point to the Board’s own underenforcement of
    employers’ duty to bargain as a reason why a rule formally
    delaying certification does not affect employees’ substantive
    rights or interests.
    But that practice does not negate the fact that the new
    provisions delaying certification shift the parties’ substantive
    burdens during the post-election period. As the Board
    explained in the 2019 Rule, the issuance of a certification under
    the prior rule despite the pendency of a request for review
    placed the risk on the employer to either refuse to bargain while
    awaiting the Board’s ruling and thereby commit an unfair labor
    practice if it loses on review, or to proceed to bargain while
    awaiting the Board’s ruling even though a win on review could
    prove bargaining to have been unnecessary. 84 Fed. Reg. at
    69,554-55. Materially diminishing employers’ incentives to
    bargain promptly upon certification curtails employees’
    enjoyment of the legal rights that flow from a valid
    certification. Thus, the delayed-certification provisions are
    substantive rules that required notice and comment.
    The dissent further contends that we “fail[] to distinguish”
    our decisions in Lamoille, JEM Broadcasting, and Public
    Citizen—which, according to our dissenting colleague, each
    involved rules that altered the “timing for exercising
    substantive rights.” Diss. Op. 13-14 (citing Lamoille, 711 F.2d
    at 327; JEM Broad. Co., 
    22 F.3d at 322, 326-27
    ; Pub. Citizen,
    276 F.3d at 637). But there is a material distinction. The rules
    at issue in Lamoille and JEM Broadcasting altered the
    28
    “timetable for asserting substantive rights” before an agency—
    not the timetable for exercising a substantive right itself.
    Lamoille, 711 F.2d at 328 (emphasis added). In other words,
    the rules at issue in those cases were primarily directed toward
    regulating the manner in which parties present their views or
    otherwise submit requests to the agency, as opposed to their
    exercise of substantive rights or interests outside of any
    agency-facing proceeding. In Lamoille, we examined an
    agency’s decision to expedite its schedule for considering
    merger applications and to truncate from 90 days to 60 days the
    period in which competing railroads could file responses to a
    proposed merger. Id. at 326-27. And in JEM Broadcasting,
    the rule at issue established a “fixed filing period” for license
    applications for particular commercial FM radio channels and
    set a 30-day limit on application amendments. 
    22 F.3d at 322, 327-28
    . Both those rules set deadlines for filings seeking
    agency decisions.
    Similarly, the rule considered in Public Citizen affected
    the manner in which parties make requests to an agency,
    without altering their substantive rights or interests. See 276
    F.3d at 640-41.         Specifically, the rule directed State
    Department personnel to search only for responsive documents
    that existed prior to the date of a FOIA request, thereby leaving
    applicants to submit additional FOIA requests to obtain
    documents created after their request was filed. See id. at 637,
    640-41. Even as, broadly speaking, the certification delay
    challenged here, like each of those three cases, involves some
    form of “timing” change, none of the three prior cases involved
    a rule that suspended a party’s entitlement to a substantive right
    or interest.
    The provisions delaying certification do just that: They
    eliminate an employer’s legal duty to bargain with a union that
    has won an election during the time it takes the Board to resolve
    29
    any requests for review or, in the absence of any such request,
    until the time for seeking Board review has elapsed. See 2019
    Rule, 84 Fed. Reg. at 69,597-99 (codified at 
    29 C.F.R. § 102.69
    (b), (c)); see also 
    id. at 69,526
    . That direct impact on
    an employer’s legal duty and its employees’ associated
    substantive right is what distinguishes the provisions delaying
    certification from the rules at issue in Lamoille, JEM
    Broadcasting, and Public Citizen—and excludes them from the
    shelter of the procedural exception. See, e.g., Glickman, 
    229 F.3d at 280
     (“[Procedural rules] do not themselves alter the
    rights or interests of parties.” (quoting JEM Broad. Co., 
    22 F.3d at 326
    )).
    Finally, the parties dispute whether delayed certification
    also affects a union’s right to recognitional picketing under 
    29 U.S.C. § 158
    (b)(7). Compare, e.g., NLRB Principal Br. 64
    (maintaining that it “is simply wrong to assert that this rule
    affects a union’s right to picket for recognition, as the 30-day
    limitation on picketing contained in Section 8(b)(7) of the
    NLRA is eliminated by the filing of a petition” (footnotes
    omitted)), and NLRB Response & Reply Br. 29 (same), with,
    e.g., AFL-CIO Principal & Response Br. 37 n.12 (maintaining
    that “[s]uch picketing would be unlawful absent certification if
    continued for more than 30 days”). Because the effect of the
    delayed-certification provisions on the right to collective
    bargaining is sufficient to bring them outside the APA’s
    procedural exception, we need not resolve the uncertainty
    surrounding the time limits on recognitional picketing.
    3. Election observers
    Election observers play “the indisputably important role”
    of “representing their principals, challenging voters, generally
    monitoring the election process, and assisting the Board agent
    in the conduct of the election.” 2019 Rule, 84 Fed. Reg. at
    30
    69,553. The Board has recognized that the presence of both
    employer-selected and union-selected observers at elections
    “help[s] to assure the parties and the employees that the
    election is being conducted fairly.” Id. at 69,552 (quoting
    Browning-Ferris Indus., 
    327 NLRB 704
    , 704 (1999)). The
    choice of election observers bears on the foundational interest
    in electoral legitimacy—both actual and perceived.
    As the Board explained in the 2019 Rule, “[t]he practice
    of permitting the parties to be represented by observers at
    Board-conducted elections dates to the earliest days of the
    Act,” even though “the Act itself does not make any provision
    for observers to be present at an election.” 
    Id. at 69,551
    . In its
    decisional law, the Board has long characterized the policy as
    a “privilege” or “courtesy” that it affords to parties, rather than
    a right or entitlement. See 
    id.
     (citations omitted). But it matters
    not that the Board has so characterized its policy of allowing
    election observers, because “we examine how the rule affects
    not only the ‘rights’ of aggrieved parties, but their ‘interests’ as
    well.” Chamber of Com., 174 F.3d at 212 (citation omitted).
    The rule’s effect on regulated parties’ substantive interests in
    choosing their own election observers suffices to remove it
    from the category of procedural rules under the APA. See
    Mendoza, 
    754 F.3d at 1023
     (explaining that “[p]rocedural rules
    do not themselves alter the rights or interests of parties”
    (internal quotation marks and citation omitted) (emphasis
    added)); accord Glickman, 
    229 F.3d at 280
    .
    The 2019 Rule provides that for manual, or in-person,
    elections,
    any party may be represented by observers of its own
    selection; whenever possible, a party shall select a
    current member of the voting unit as its observer, and
    when no such individual is available, a party should
    31
    select a current nonsupervisory employee as its
    observer. Selection of observers is also subject to
    such limitations as the Regional Director may
    prescribe.
    84 Fed. Reg. at 69,597 (codified at 
    29 C.F.R. § 102.69
    (a)(5))
    (emphases added). By comparison, the 2014 Rule stated, in
    relevant part, only that, “[w]hen the election is conducted
    manually, any party may be represented by observers of its own
    selection, subject to such limitations as the regional director
    may prescribe.” 79 Fed. Reg. at 74,486.
    The AFL-CIO argues that the 2019 Rule limits unions’
    ability to select as observers former employees or union staff
    members who are less likely to be subject to intimidation and
    often more capable of “send[ing] a message to the employees
    who are voting that this is a fair election.” Oral Arg. Tr. 35:17-
    36:2. The AFL-CIO further contends that the ability to select
    a former employee or union staff member as an observer can
    be helpful when employees are “scared to sit . . . at the table . . .
    in front of the[ir] employer.” Id. at 35:17-22.
    We conclude the election-observer provision falls outside
    the APA’s procedural exception because it “encodes a
    substantive value judgment” about the type of observers that
    best serve the policy goals animating the Board’s decision to
    permit non-Board observers, Pub. Citizen, 276 F.3d at 640, and
    so burdens regulated parties’ interests in fair elections. The
    Board has long recognized parties’ choice of observers as an
    important interest bearing on participants’ confidence in the
    fair conduct of the elections. The Board itself has recognized
    that the standards governing who may serve as an election
    observer can directly affect the fairness and outcome of
    elections, because employee-voters may be “intimidate[d]” by
    the presence of certain types of observers, such as employees
    32
    with “disciplinary power.” 2019 Rule, 84 Fed. Reg. at 69,551
    n.109 (quoting United States Gypsum Co., 
    81 NLRB 197
    (1949)); see also 
    id. at 69,552
    .
    The Board candidly admitted that the core of the provision
    in question—confining parties to select a current member of
    the voting unit as their observer whenever possible—“is a new
    innovation,” not a codification of any principle previously
    developed in the Board’s precedent on observers. 
    Id. at 69,553
    .
    It therefore imposes a “new substantive burden[],” EPIC, 
    653 F.3d at 5
     (citation omitted), on the parties by “alter[ing] the
    standards imposed on” them when choosing observers,
    Mendoza, 
    754 F.3d at 1024
     (emphasis omitted). That
    substantive character suffices to remove the provision from the
    agency-procedure exemption from the notice and comment
    requirement.
    Our dissenting colleague does not dispute that the election-
    observer provision “alter[s] the substantive criteria” by which
    parties select observers. Glickman, 
    229 F.3d at 281
    . But she
    claims the provision “does not encode a substantive value
    judgment,” because “[t]he point [of the provision] is
    transparency in an election procedure under the control of the
    Board.” Diss. Op. 16. Transparency benefits do not negate the
    provision’s substantive value judgment regarding the type of
    observers best suited to achieve the Board’s policy goals. See,
    e.g., 2019 Rule, 84 Fed. Reg. at 69,552. More fundamentally,
    the Board’s role in supervising representation elections does
    not convert every provision regarding election process into a
    rule of agency procedure. Parties’ interests in choosing
    representatives to observe elections and help ensure that
    employees may vote free from intimidation are substantive
    interests in the conduct of choosing or declining union
    representation.
    33
    Nothing in Guardian requires us to treat the election-
    observer provision here as a matter of agency procedure. Cf.
    Diss. Op. 16-17 (citing Guardian, 
    589 F.2d at 665
    ). The rule
    at issue in Guardian concerned mandatory, annual audits of
    federally insured savings and loan institutions pursuant to an
    unchallenged provision that “specifie[d] in considerable detail
    criteria that must be met before an audit or an auditor will be
    satisfactory to” the Federal Savings & Loan Insurance
    Corporation (FSLIC). 
    589 F.2d at 661
    . Guardian challenged
    the part of FSLIC’s rule in which the agency “exercise[d] an
    option” provided by a preexisting rule “to require that audits be
    performed by accountants from the private sector,” rather than
    as incidental to other examinations by FSLIC staff. 
    Id. at 665
    .
    We described the agency’s decision that its examiners would
    no longer conduct those audits as “unquestionably one of
    agency procedure.” 
    Id.
     The Board’s election-observer
    provision, unlike the FSLIC’s rule, is not the “necessary
    consequence of,” id.—or even arguably related to—a decision
    about the duties of NLRB staff. And election observers, unlike
    auditors, play a role in representing unions and employers to
    third parties—namely, employee-voters. See 2019 Rule, 84
    Fed. Reg. at 69,553.
    In short, because the election-observer provision imposes
    new “substantive burden[s]” on the parties’ interests in fair
    elections, employee-voters’ perceptions of both employer and
    union, and voters’ ultimate confidence in the elections, it falls
    outside the APA’s exception for “procedural” rules. EPIC, 
    653 F.3d at 5
    ; accord Mendoza, 
    754 F.3d at 1023-24
    .
    B. Procedural Rules
    We turn next to the two remaining challenged provisions
    of the 2019 Rule: those regarding pre-election litigation of
    certain issues and a related adjustment to the default rule for
    34
    election scheduling. Unlike the other challenged provisions,
    these two are principally “internal house-keeping” rules,
    Bowen, 
    834 F.2d at 1045
    ; they are both “primarily directed
    toward improving the efficient and effective operations of [the]
    agency,” Mendoza, 
    754 F.3d at 1023
     (quoting Batterton, 
    648 F.2d at
    702 n.34), and “impose[] no new substantive
    obligations” or burdens upon the parties’ rights and interests,
    EPIC, 
    653 F.3d at 6
    . We therefore hold that these two
    provisions are procedural rules exempt from notice and
    comment under section 553.
    1. Pre-election litigation of voter eligibility, unit
    scope, and supervisory status
    As referenced above, employers and unions sometimes
    disagree over which employees may be appropriately
    encompassed within a bargaining unit. Such disputes affect
    who is eligible to vote in an election: only votes cast by
    employees who would be within the proposed unit count
    toward determining the outcome of the election. For example,
    parties may disagree about whether an employee is a supervisor
    and accordingly excluded from the NLRA’s protections,
    outside any proposed bargaining unit, and ineligible to vote. In
    most cases, the parties resolve such disputes through election
    agreements. But when the parties do not settle those issues
    themselves, it falls to the NLRB to decide them.
    Under the 2019 Rule, “[d]isputes concerning unit scope,
    voter eligibility and supervisory status will normally be
    litigated and resolved by the Regional Director before an
    election is directed.” 84 Fed. Reg. at 69,593 (codified at 
    29 C.F.R. § 102.64
    (a)). That presumption replaced the 2014
    Rule’s provision that “[d]isputes concerning individuals’
    eligibility to vote or inclusion in an appropriate unit ordinarily
    need not be litigated or resolved before an election is
    35
    conducted.” 79 Fed. Reg. at 74,482. Under the old rule,
    individuals whose disputed eligibility was undecided at the
    time of the election would cast their votes subject to challenge.
    After the election, the eligibility or inclusion disputes would be
    resolved as necessary, such as when the votes of the contested
    individuals could affect the outcome of the election or, if the
    pro-union votes prevailed in any event, to determine whether
    contested individuals were appropriately treated as part of the
    bargaining unit.
    The AFL-CIO argues that this provision of the 2019 Rule
    falls outside the APA’s procedural exception because it “vests
    parties with an affirmative, substantive right, most often
    exercised by the employer, to obtain a pre-election advisory
    opinion regarding the status of individual employees.” AFL-
    CIO Principal & Response Br. 28-29. It further contends the
    provision is substantive because it builds in a source of
    unjustified delay by “add[ing] the prerequisite of resolving
    these individual eligibility issues before a petitioning party may
    obtain a Board election.” Id. at 28. It asserts the prior practice
    of deferring resolution of eligibility and scope questions until
    after an election was more efficient where the margin of
    election victory was sufficient to moot the ballot challenges.
    The Board responds that the provision merely changes
    “when those issues are presented to, and decided by, the
    Board,” NLRB Principal Br. 55 (emphasis in original), and,
    even then, only “in the small number of contested election
    cases”—around ten percent—“that the Board hears per year,”
    id. at 57. At least some of the contested election cases are too
    close to moot ballot disputes. And even when a union’s win is
    decisive, disputes affecting individuals’ inclusion or not in the
    unit remain live. See NLRB Response & Reply Br. 19-20.
    36
    The provision calling on the Regional Director typically to
    decide issues of voter eligibility and unit scope before rather
    than after the election is procedural, not substantive. It is
    directed at “agency actions that do not themselves alter the
    rights or interests of parties.” Glickman, 
    229 F.3d at 280
    (quoting JEM Broad. Co., 
    22 F.3d at 326
    ). And it does not
    appear from the record that reversing the presumptive pre-
    election timing of those decisions “substantively affects”
    regulated parties to a “degree sufficient to implicate the policy
    interests animating notice-and-comment rulemaking.” EPIC,
    
    653 F.3d at 6
    . As the Board explained in the 2019 Rule, the
    provision marks a return to the pre-2014 approach. See 84 Fed.
    Reg. at 69,525.
    In holding that the provision falls outside the procedural
    exception, the district court expressed concern that reverting to
    a process associated with delays “will hinder the employees’
    prospects of mobilizing a sufficient number of peers to
    unionize the workplace,” AFL I, 466 F. Supp. 3d at 91, but the
    AFL-CIO itself does not so argue. Indeed, the AFL-CIO’s own
    expert concluded that the 2014 Rule, successfully shortening
    case times, did not affect rates of unionization. D.A. 103. The
    expert similarly found that statistics regarding frequency and
    length of hearings were unaffected by the shift in their
    presumptive timing: “Neither the probability of a case’s
    having a pre-election hearing nor the average length of those
    hearings changed, over time or in the wake of the [2014] rule
    change.” D.A. 111.
    Contrary to the AFL-CIO’s assertion, the provision calling
    on Regional Directors to decide eligibility disputes before an
    election cannot fairly be said to create an “affirmative,
    substantive right” in any party to insist that they do so. AFL-
    CIO Principal & Response Br. 28-29. By its terms, the
    provision sets only the sequence Regional Directors
    37
    “normally” should follow. 2019 Rule, 84 Fed. Reg. at 69,540.
    It neither prevents parties from agreeing to defer resolutions
    until after an election, nor prevents Regional Directors from
    deciding over objection to defer decision of eligibility disputes
    in appropriate cases. See id. at 69,541-42 (noting that rule
    establishes only when Regional Directors “normally” will
    decide, and that the new provision is “not imposing a
    requirement that, absent agreement of the parties to the
    contrary, all eligibility issues must be resolved prior to an
    election” but preserves “the discretion of the regional director
    to defer eligibility and inclusion issues”).
    The record, then, does not bear out the contention that the
    parties’ substantive rights or interests are affected by returning
    to the pre-2014 default sequence for the Regional Director’s
    resolution of issues of voter eligibility, unit scope, and
    supervisory status. The change principally affects the manner
    in which employers and unions present themselves and their
    views to the Board and in which it decides their disputes, rather
    than the parties’ substantive rights or interests. See Lamoille,
    711 F.2d at 328; Glickman, 
    229 F.3d at 280-81
    ; JEM Broad.
    Co., 
    22 F.3d at 327-28
    ; cf. Mendoza, 
    754 F.3d at 1023-24
    .
    Specifically, for elections not conducted pursuant to election
    agreements, the provision sets the sequence the NLRB expects
    its Regional Directors ordinarily to follow in deciding disputed
    questions of eligibility and scope.
    We accordingly hold that the provision regarding pre-
    election litigation is a procedural rule validly promulgated
    without prior notice and comment.
    2. Election scheduling
    Following the pre-election hearing that occurs in those
    cases not conducted under an election agreement, the Regional
    Director either dismisses the petition calling for an election if
    38
    no question of representation exists or, if she identifies such a
    question, issues a decision and direction of election. The
    direction of election often includes details like the date of the
    election.
    The 2019 Rule builds in a presumptive waiting period of
    twenty business days immediately following the direction of
    election to allow the Board to rule on disputes between the
    parties. It states that the Regional Director
    shall schedule the election for the earliest date
    practicable, but unless a waiver is filed, the Regional
    Director will normally not schedule an election
    before the 20th business day after the date of the
    direction of election, to permit the Board to rule on
    any request for review which may be filed.
    2019 Rule, 84 Fed. Reg. at 69,595 (codified at 
    29 C.F.R. § 102.67
    (b)). By contrast, the 2014 Rule simply provided that
    “[t]he regional director shall schedule the election for the
    earliest date practicable.” 79 Fed. Reg. at 74,485. In the 2019
    Rule, the Board acknowledged that the new provision will
    generally result in about four weeks between the direction of
    election and the election itself, as compared to about two weeks
    under the 2014 Rule. See 84 Fed. Reg. at 69,546.
    The AFL-CIO argues that the 2019 Rule’s election-
    scheduling provision is substantive because it “deprives a
    petitioning party of its existing right to a prompt election,”
    AFL-CIO Principal & Response Br. 31, and affects “how much
    time parties have to communicate with employees prior to the
    election,” id. at 32 (internal quotation marks and citation
    omitted). The Board responds that we have previously held
    that “changes to agency timelines are procedural, not
    substantive,” NLRB Principal Br. 58-59 (citing Lamoille, 711
    F.2d at 328), and that the provision addresses “the internal
    39
    workings of the agency by, among other effects, giving the
    Board more time to rule on requests for review prior to
    elections,” id. at 60.
    We hold that the election-scheduling provision is
    procedural. Like the rule at issue in Lamoille, it comprises part
    of the “timetable for [regulated entities to] assert[] substantive
    rights,” 711 F.2d at 328, namely, particular employees’ right to
    vote for or against a union to represent them as a defined bloc.
    And, as in Lamoille, the relevant inquiry is whether the
    timetable unduly constrains the rule challenger’s opportunity
    to state its case. See id. Whereas in Lamoille, the “proper
    question” was “whether the time allotted [was] so short as to
    foreclose effective opportunity to make one’s case on the
    merits,” id., here, we might in fairness reverse the question:
    whether the time allotted between the direction of election and
    the election itself is so long as to impede a union’s opportunity
    to make its case on the merits to employee-voters. Indeed, the
    longer a case drags on, the more risk that support for a union
    (or other impetus to call for an election in the first place) will
    dissipate. Cf. Oral Arg. Tr. 36:16-37:8, 39:10-18 (counsel for
    the AFL-CIO explaining that delays in bringing a
    representation case to resolution can diminish employees’
    support for a union).
    The time allotted by the election-scheduling provision is
    not so long as to impede the union’s opportunity to make its
    case to employee-voters. Like the provision regarding pre-
    election litigation of certain issues, the election-scheduling
    provision is a return to the pre-2014 rules for representation
    cases. See 2019 Rule, 84 Fed. Reg. at 69,525. The pre-2014
    rules provided for twenty-five to thirty calendar days between
    the direction of election and the election itself, which is
    functionally equivalent to the twenty business days specified in
    the 2019 Rule. See id. at 69,545. And the evidence in the
    40
    record shows that this timing change did not affect the rate at
    which unions or employers prevailed. See id. at 69,528; D.A.
    103.
    Finally, the election-scheduling provision is directed
    toward improving the efficient and effective operations of the
    Board, which generally indicates a procedural, rather than
    substantive, rule. See Mendoza, 
    754 F.3d at 1023
    . The
    provision itself specifies that the twenty-business-day period is
    “to permit the Board to rule on any request for review which
    may be filed,” 2019 Rule, 84 Fed. Reg. at 69,595 (codified at
    
    29 C.F.R. § 102.67
    (b)), reflecting the agency’s preferred
    approach to “internal house-keeping.” Bowen, 
    834 F.2d at 1045
    . As the Board elaborated in the Rule, it gives the Board
    “a realistic opportunity” to “decid[e] issues prior to the election
    . . . [and] contribute[s] to a more efficient resolution of the
    question of representation by clearing away issues that may
    otherwise linger on after the election.” 2019 Rule, 84 Fed. Reg.
    at 69,546.
    The precise timing of an election does not itself alter any
    extant legal duty; it presumptively delays the process for
    determining whether the employer’s legal duty to bargain
    (among other duties) will even arise. That distinguishes the
    Board’s election timing provision from the provision delaying
    certification of election results. Only the latter directly alters
    an employer’s legal duty and its employees’ associated
    substantive right during a certain period post-election. See
    supra Section II.A.2. We accordingly conclude that our
    precedent places the election-timing provision on the
    procedural side of the section 553 procedural/substantive
    dividing line even as the delayed-certification provision is
    properly treated as substantive. See Mendoza, 
    754 F.3d at 1023-24
    .
    41
    In sum, we hold that the Board acted permissibly in
    treating the election-scheduling provision as a procedural rule
    and promulgating it without notice and comment.
    III. Arbitrary-and-Capricious Challenge to the 2019 Rule
    as a Whole
    In its cross-appeal, the AFL-CIO claims that the 2019 Rule
    as a whole is arbitrary and capricious in violation of the APA.
    It emphasizes the “uncontroverted evidence” that the 2014
    Rule significantly reduced the overall duration of
    representation cases. AFL-CIO Principal & Response Br. 44;
    see also id. at 47. And it argues that the Board’s rationale that
    the 2019 Rule promotes finality is insupportable given that the
    Rule “extend[s] multiple deadlines, permit[s] more litigation,
    and delay[s] the attachment of legal duties.” Id. at 44. The
    AFL-CIO accuses the Board of ignoring data on the 2014
    Rule’s effect on case timelines, id. at 47-48, and criticizes the
    Board for “not even cit[ing] anecdotal evidence of problems
    with the deadlines” established by the earlier rule, id. at 51.
    But, as the district court explained, “the record establishes
    that the Board exercised its discretion with relevant
    information in hand and with eyes wide open concerning the
    impact of the significant changes that it was adopting.” AFL
    II, 471 F. Supp. 3d at 241 (citing Am. Hosp. Ass’n v. NLRB,
    
    499 U.S. 606
    , 618-19 (1991)). Thus, the 2019 Rule as a whole
    passes muster under the APA.
    In the extensive preamble to the 2019 Rule, running more
    than thirty pages, the Board repeatedly acknowledges that its
    changes will result in longer waits before elections relative to
    the 2014 Rule. See, e.g., 2019 Rule, 84 Fed. Reg. at 69,528,
    69,546, 69,557. And the Board expressly notes the evidence
    that the AFL-CIO says it ignored—“that the median time
    between the filing of a petition and the election has been
    42
    significantly reduced since the 2014 amendments became
    effective.” Id. at 69,528; see also id. at 69,528 n.15 (citing
    statistics on case lengths). The Board nonetheless concludes
    that the 2014 Rule’s “gains in speed have come at the expense
    of other relevant interests,” like transparency and uniformity,
    and finality and certainty, id. at 69,528-29, and, in the 2019
    Rule, made “non-statistical policy choices” about how to
    further those other interests, id. at 69,557.
    The Board gives a rational account of how the 2019 Rule
    advances interests apart from speed. For example, the Board
    adequately explains that the election-scheduling provision—
    which supplements the “earliest date practicable” language
    with a default minimum period of twenty business days—
    promotes transparency and uniformity by making the timing of
    elections more predictable for parties. See id. at 69,546. It also
    explains that the provision regarding pre-election litigation of
    voter eligibility, unit scope, and supervisory status could
    provide employee-voters with more complete information
    about “who they are voting to join in collective bargaining.”
    Id. at 69,541.
    On finality, the district court aptly distinguished between
    the different forms that interest might take, and how the Board
    might value one form over another. On the one hand is the kind
    of finality that “requires all disputes about the outcome of an
    election to be resolved prior to certification,” which prizes the
    “definitiveness” of certification. AFL II, 471 F. Supp. 3d at
    242. On the other hand is “finality in terms of efficient election
    results that facilitate relatively rapid certification,” but with the
    potential that such a certification could be undone if the Board
    ultimately granted a request for review. Id.
    In the 2019 Rule, the Board makes clear its preference for
    the former kind of finality. Early on, the Board asserts
    43
    generally that “[t]he mere fact that elections are taking place
    quickly does not necessarily mean that this speed is promoting
    finality or the most efficient resolution of the question of
    representation.” 2019 Rule, 84 Fed. Reg. at 69,529 (emphasis
    added). Later, in the context of the provision calling for pre-
    election resolution of issues like unit scope, it explains that “the
    Board should strive to maximize the opportunity for an election
    vote to provide immediate finality, subject only to the filing of
    objections to conduct allegedly affecting the results,” which
    necessarily cannot be litigated before an election. Id. at 69,540.
    Regardless of whether one agrees with those explanations as a
    policy matter, we cannot say they are irrational.
    The Board’s weighing of competing interests—including
    variations on the same interest—in the 2019 Rule was
    reasonable and sufficiently explained. The Rule therefore is
    not arbitrary and capricious as a whole.
    IV. The 2019 Rule’s Impoundment Provision
    Under the 2019 Rule, if a party files a request for review
    of a direction of election within ten business days of its
    issuance by the Regional Director, and the Board either grants
    the request or does not rule on it before the election occurs, then
    “all ballots shall be impounded and remain unopened pending
    such ruling or decision.” 84 Fed. Reg. at 69,595 (codified at
    
    29 C.F.R. § 102.67
    (c)). The AFL-CIO claims that the
    impoundment provision violates the APA in two respects.
    First, it argues that the provision is arbitrary and capricious, in
    part because it “forc[es] the Board to automatically decide any
    issue timely raised in a request for review without evaluating
    whether the particular issue is likely to be rendered moot by the
    election results.” AFL-CIO Principal & Response Br. 54.
    Second, the AFL-CIO argues that the provision is contrary to
    law, namely, section 3(b) of the Act.
    44
    Section 3(b) of the Act allows the Board to delegate certain
    powers regarding the resolution of representation cases to
    Regional Directors. As relevant here, it provides that “the
    Board may review any action of a regional director delegated
    to him under this paragraph, but such a review shall not, unless
    specifically ordered by the Board, operate as a stay of any
    action taken by the regional director.” 
    29 U.S.C. § 153
    (b).
    Because we hold that the impoundment provision is contrary to
    law as a prohibited stay of action by Regional Directors and
    vacate it on that basis, we need not address the AFL-CIO’s
    claim that it is arbitrary and capricious.
    The impoundment provision “operate[s] as a stay” for
    purposes of section 3(b). 
    Id.
     As the Board concedes,
    impoundment “postpones the count[ing]” of ballots. 2019
    Rule, 84 Fed. Reg. at 69,548. And the counting of ballots is an
    “action taken by the regional director” as part of her delegated
    authority under section 3(b). 
    29 U.S.C. § 153
    (b). The
    impoundment provision thus falls squarely within the meaning
    of a “stay” under section 3(b).
    The Board strains against the statute’s plain text. It argues
    that section 3(b) speaks only to “a stay of any action taken by
    the regional director,” NLRB Response & Reply Br. 59
    (citation omitted), and that, because impounding ballots
    happens “before the Regional Director issues a certification,
    that is, before an action has been ‘taken,’” it is not a “stay”
    within the meaning of that section, 
    id. at 61
    . Alternatively, the
    Board argues that, even if section 3(b) were ambiguous as to
    whether impounding ballots is “a stay of any action taken”—
    because “taken” might refer only to past action or both past and
    future action—its interpretation of 3(b) as referring only to past
    action is reasonable. See 
    id. at 63-68
    .
    45
    The Board’s arguments miss the mark. Section 3(b) is
    clear: “a stay of any action taken” applies to past, present, and
    future actions taken by the Regional Director. As the AFL-
    CIO explains, the word “taken” in section 3(b) is a “participial
    adjective modifying the noun ‘action,’” not part of a “past tense
    verb phrase.” AFL-CIO Principal & Response Br. 59. Used in
    that way, the word “taken” is timeless; it refers to past, present,
    and future action. See Henson v. Santander Consumer USA
    Inc., 
    137 S. Ct. 1718
    , 1722 (2017); see also Diss. Op. 19 n.5.
    Accordingly, impoundment “operates as a stay” under section
    3(b) regardless of whether the impoundment occurs before the
    Regional Director issues a certification. 
    29 U.S.C. § 153
    (b).
    Even if section 3(b) were ambiguous (it is not), the Board’s
    interpretation would not carry the day. In reviewing agency
    action, “we look only to what the agency said at the time of the
    rulemaking—not to its lawyers’ post-hoc rationalizations.”
    Good Fortune Shipping SA v. Comm’r, 
    897 F.3d 256
    , 263
    (D.C. Cir. 2018) (internal quotation marks and citation
    omitted). The Board’s explanation in the preamble does not so
    much as mention the word “taken.” See 2019 Rule, 84 Fed.
    Reg. at 69,547-49. And the cursory explanation that the Board
    did provide does not do the trick. In attempting to reconcile
    the impoundment provision with section 3(b) of the Act, the
    Board said that “impounding the ballots is not a ‘stay’ of the
    regional director’s action” because “impoundment only
    postpones the count.” Id. at 69,548. But insisting that
    something is not a “stay” because it is actually a
    “postpone[ment]” is no explanation at all. The Board’s defense
    of its impoundment provision, thus, fails to persuade.
    Our dissenting colleague’s alternative defense of the
    Board’s impoundment provision fares similarly. She agrees
    with our conclusion that the provision operates as a stay, see
    Diss. Op. 18-19, but contends that “the Board has specifically
    46
    ordered a stay” via “rulemaking,” making it permissible under
    section 3(b), id. at 20. Tellingly, the Board did not itself rely
    on the “specifically ordered” clause in section 3(b) as an
    affirmative argument. See NLRB Response & Reply Br. 58-
    69.
    The dissent’s reading of that clause is not viable. Recall
    that section 3(b) provides:
    [U]pon the filing of a request therefor with the Board
    by any interested person, the Board may review any
    action of a regional director delegated to him under
    this paragraph, but such a review shall not, unless
    specifically ordered by the Board, operate as a stay
    of any action taken by the regional director.
    
    29 U.S.C. § 153
    (b). The statutory text makes plain that
    “specifically ordered by the Board” means ordered in a given
    case, not ordered as a general matter by rulemaking. 
    Id.
    Indeed, the phrase “unless specifically ordered by the Board”
    modifies the circumstances under which “such a review shall
    not . . . operate as a stay of any action taken by the regional
    director.” 
    Id.
     (emphasis added). “[S]uch a review” refers to
    the Board’s review in a particular case; it is “a review” that
    arose “upon the filing of a request therefor with the Board.” 
    Id.
    In sum, section 3(b) permits the Board’s “review” in a
    particular case to “operate as a stay of any action taken by the
    regional director” only when “specifically ordered by the
    Board” in that case. 
    Id.
     Section 3(b)’s “specifically ordered”
    clause does not disturb our conclusion that the impoundment
    provision is contrary to law.
    ***
    For the foregoing reasons, we affirm the district court’s
    rulings that it had jurisdiction over the AFL-CIO’s challenge to
    47
    the 2019 Rule, and that the Rule is not arbitrary and capricious
    as a whole. However, we reverse in part the district court’s
    ruling on the APA’s procedural exception, leaving the court’s
    vacatur in place only as to the provisions regarding an
    employer’s production of voter lists, delayed certification, and
    election observers. Those three provisions must remain
    vacated unless and until the Board repromulgates them with
    notice and comment. We also reverse the district court’s ruling
    that the impoundment provision is not contrary to law and thus
    vacate that provision as well.
    Because we reverse in part the district court’s ruling on the
    APA’s procedural exception but affirm its ruling that the Rule
    is not arbitrary and capricious as a whole, we remand for the
    court to consider the AFL-CIO’s remaining claims—the
    undecided claims in Counts Three and Four—in the first
    instance.
    So ordered.
    RAO, Circuit Judge, concurring in the judgment in part and
    dissenting in part: The National Labor Relations Board has
    adjusted the rules for representation elections more than three
    dozen times without notice and comment since 1961. The 2019
    Rule at issue here is the latest iteration. It reverses several 2014
    changes to details of election administration. Applying an
    obsolete legal standard, the majority holds for the first time that
    some of the Rule’s provisions are substantive and therefore do
    not fall under the Administrative Procedure Act’s (APA)
    exception to notice and comment for procedural rules. See 
    5 U.S.C. § 553
    (b)(A). Under the correct standard, however, these
    are classic procedural rules and notice and comment was not
    necessary. In promulgating them, the Board balanced one
    procedural interest (speed) against others (like finality and
    transparency). I would also uphold an undisputedly procedural
    provision that requires ballots to be impounded pending review
    of an election by the Board because the provision is consistent
    with statutory requirements and reasonably explained.
    The Board has discretion to direct and manage disputes
    over representation, and it has properly issued procedural rules
    that do so. Because I would uphold the 2019 Rule in its entirety,
    I respectfully dissent.
    I.
    The Board oversees the formation of collective bargaining
    relationships between private companies and their employees.
    National Labor Relations Act of 1935, 
    Pub. L. No. 74-198, 49
    Stat. 449 (codified as amended at 
    29 U.S.C. §§ 151
    –69). When
    employees seek to unionize, the Board is responsible for
    directing elections and certifying the results. 
    29 U.S.C. § 159
    (c). As part of this responsibility, the Board has long
    prescribed and regularly updated rules for election
    administration. The majority summarizes this history but
    glosses over two important points. First, the overwhelming and
    2
    previously unchallenged practice of the Board has been to issue
    rules of election administration without notice and comment.
    Second, these rules have consistently balanced procedural
    interests, particularly the speed, finality, transparency, and
    uniformity of elections. The 2019 Rule is no different.
    The Board first promulgated a set of rules to govern
    elections in 1961. The rules revamped the entire election
    process, delegated authority to regional directors to resolve
    pre-election disputes and run elections, and significantly
    decreased the time it took to conduct elections. Representation-
    Case Procedures, Notice of Proposed Rulemaking, 
    79 Fed. Reg. 7,318
    , 7,320 (Feb. 6, 2014) (recounting history). The
    Board nevertheless issued the rules without notice and
    comment. In the following decades, the Board modified its
    election rules more than three dozen times, always without
    notice and comment. Representation-Case Procedures, Final
    Rule, 
    79 Fed. Reg. 74,308
    , 74,310 (Dec. 15, 2014). When, in
    2011 and 2014, the Board broke with this practice and used
    notice and comment to modify its election rules, it emphasized
    that notice and comment was unnecessary. 
    Id. at 74,311
    ;
    Representation-Case Procedures, Final Rule, 
    76 Fed. Reg. 80,138
    , 80,148 (Dec. 22, 2011). The Board promulgated the
    2019 Rule at issue here without notice and comment,
    explaining that the Rule was procedural and the additional
    process unnecessary. Representation–Case Procedures, Final
    Rule, 
    84 Fed. Reg. 69,524
    , 69,528 (Dec. 18, 2019).
    The Board has correctly classified election rules as
    procedural for over 60 years.1 Adjustments to the rules have
    been aimed at archetypal procedural values, such as ensuring
    1
    If the election rules were properly deemed substantive, a
    longstanding practice of the Board would not insulate them from the
    requirements of notice and comment rulemaking.
    3
    votes are “recorded accurately, efficiently and speedily.” See
    NLRB v. A.J. Tower Co., 
    329 U.S. 324
    , 331 (1946) (describing
    the Board’s goals for its election rules and regulations). The
    oscillation over time can be explained by the fact that some
    values compete and experience may cause the Board to strike
    a different balance. For example, the Board has long worked to
    speed up the election process, including in the 2014 Rule. 84
    Fed. Reg. at 69,528. But the Board has also sought to improve
    the transparency, uniformity, and finality of elections. Id. at
    69,529.
    In 2019, the Board made some modifications to promote
    finality and predictability, explaining the “gains in speed” over
    the years had “come at the expense of other relevant interests.”
    Id. at 69,528–29. The Board acknowledged the changes might
    come “at the cost of some promptness,” but concluded the
    benefits outweighed the costs. Id. at 69,548. “[T]he mere fact
    that an election is conducted promptly does not mean that the
    question of representation has been resolved.” Id. at 69,545.
    The Board has an interest in promoting finality and certainty to
    employers and unions, ensuring that election challenges do not
    “linger on … for weeks, months, or even years.” Id. at 69,529.
    As it has for more than six decades, the Board considered and
    traded off various procedural values in its latest modification
    to the rules governing election administration.
    II.
    The AFL-CIO argues that the 2019 Rule is substantive and
    thus the Board was required to follow notice and comment
    procedures. When an agency promulgates a rule, usually it
    must publish notice in the Federal Register and submit the rule
    to the public for comment. 
    5 U.S.C. § 553
    (b)–(c). But some
    rules are exempt, including “rules of agency organization,
    procedure, or practice.” 
    Id.
     § 553(b)(A). This case requires us
    4
    to distinguish “substantive” rules on the one hand, which are
    subject to notice and comment, from “procedural” rules on the
    other, which are not. While the line between substantive and
    procedural rules is sometimes difficult to discern, following the
    principles articulated by our decisions over the last few
    decades, the 2019 Rule is procedural and therefore was
    properly promulgated without notice and comment.
    To determine whether a rule is procedural or substantive,
    we ask whether it “encodes a substantive value judgment.”
    Pub. Citizen v. Dep’t of State, 
    276 F.3d 634
    , 640 (D.C. Cir.
    2002) (quoting Am. Hosp. Ass’n v. Bowen, 
    834 F.2d 1037
    , 1047
    (D.C. Cir. 1987)). In particular, a substantive rule encodes a
    value judgment about primary conduct whereas a procedural
    rule governs secondary conduct. See Air Transp. Ass’n of Am.
    v. Dep’t of Transp., 
    900 F.2d 369
    , 383 (D.C. Cir. 1990)
    (Silberman, J., dissenting), remanded, 
    498 U.S. 1077
     (1991),
    vacated as moot, 
    933 F.2d 1043
     (D.C. Cir. 1991); JEM Broad.
    Co. v. FCC, 
    22 F.3d 320
    , 328 (D.C. Cir. 1994) (disavowing the
    Air Transport majority’s reasoning and noting the majority is
    no longer binding precedent); cf. Landgraf v. USI Film Prods.,
    
    511 U.S. 244
    , 275 (1994) (“[R]ules of procedure regulate
    secondary rather than primary conduct.”). For example,
    “judgment[s] about what mechanics and processes are most
    efficient” are procedural. JEM Broad., 
    22 F.3d at 328
    . A
    procedural rule does not become substantive solely because the
    parties prefer one type of procedure over another. “All
    decisions, to the extent that they derive from reasons,
    necessarily are based on the value judgment that the chosen
    option is better, in some relevant way, than its alternatives.”
    James V. Hurson Assocs., Inc. v. Glickman, 
    229 F.3d 277
    , 282
    (D.C. Cir. 2000).
    The mine run of facially procedural rules will in fact be
    procedural; however, even a rule that is facially procedural may
    5
    be deemed substantive if the effects are so “sufficiently grave”
    or create such an “extreme procedural hurdle[]” that the
    substance swallows the procedure. See Lamoille Valley R.R. v.
    ICC, 
    711 F.2d 295
    , 328 (D.C. Cir. 1983). Moreover, if a rule
    of procedure “substantively affects the public” in some
    ancillary way, it might require notice and comment because of
    those impacts. Elec. Priv. Info. Ctr. v. U.S. Dep’t of Homeland
    Sec., 
    653 F.3d 1
    , 6 (D.C. Cir. 2011) (“EPIC”) (recognizing the
    “personal privacy” impact on the public of TSA technology
    that produced “an image of the unclothed passenger”).
    Instead of following these decisions, the majority in effect
    applies a 1970s framework in which “substantial impact” was
    the touchstone of a substantive rule. See Pickus v. U.S. Bd. of
    Parole, 
    507 F.2d 1107
    , 1112 (D.C. Cir. 1974). While nodding
    to our more recent cases, the majority primarily evaluates
    whether the 2019 Rule has something like a “substantial
    impact” on the parties. The majority begins its analysis of each
    rule by looking at the degree to which “substantial” rights or
    interests are impacted. This is the wrong threshold question—
    at the outset we consider whether a rule regulates primary or
    secondary conduct. A rule is presumed procedural when it
    regulates only secondary conduct and the mere fact that such a
    rule impacts legal rights does not make it a substantive rule.
    The majority avoids the language of substantial impact, but
    uses synonyms that amount to the same thing, considering
    whether the Rule “direct[ly] impact[s],” “burdens,” “affects,”
    “curtails,” or “trenches on” various rights and interests.
    The majority’s analysis is directly at odds with this
    circuit’s more recent decisions. We have repeatedly held that a
    “substantial impact” or “substantial burden” does not make a
    rule substantive. See Glickman, 
    229 F.3d at 281
     (“[E]ven if the
    [rule] did impose a substantial burden … that burden would not
    convert the rule into a substantive one that triggers the APA’s
    6
    notice-and-comment requirement.”); EPIC, 
    653 F.3d at 5
     (“[A]
    rule with a ‘substantial impact’ upon the persons subject to it is
    not necessarily a substantive rule under § 553(b)(3)(A).”); cf.
    Cabais v. Egger, 
    690 F.2d 234
    , 237 (D.C. Cir. 1982) (noting,
    in the context of interpretive rules, that just because an “agency
    action has substantial impact does not mean it is subject to
    notice and comment”). We retired the substantial impact or
    burden test because “even unambiguously procedural measures
    affect parties to some degree.” Pub. Citizen, 276 F.3d at 640
    (cleaned up).
    Moreover, determining whether a rule impacted, affected,
    or burdened substantive rights did not track the text of the APA
    or comply with the Supreme Court’s command in Vermont
    Yankee to avoid extratextual procedures. See Cabais, 
    690 F.2d at 237
     (“Since Vermont Yankee, it is clear that a court cannot
    engraft additional procedures on agency action beyond those
    contemplated by the APA.”) (cleaned up). As we have
    recognized, “[o]f course, procedure impacts … outcomes and
    thus can virtually always be described as affecting substance,
    but to pursue that line of analysis results in the obliteration of
    the distinction that Congress demanded.” JEM Broad., 
    22 F.3d at 326
     (quoting Air Transp., 900 F.2d at 383 (Silberman, J.,
    dissenting)).
    If a rule is procedural on its face that will usually be the
    end of the matter unless the effects of the rule are “sufficiently
    grave” or create an “extreme procedural hurdle.” Lamoille
    Valley, 711 F.2d at 328. In true boundary cases, our standards
    recognize that the distinction between procedural and
    substantive rules may collapse and that unusual or onerous
    procedures may in fact be more akin to substantive rules.
    Considering the edge cases of “extreme procedural hurdles”
    ensures agencies are not regulating the primary conduct of
    private parties without public notice and comment.
    7
    To summarize, for a procedural rule to fit within the
    APA’s exception to notice and comment requirements, it must
    regulate secondary conduct and not enshrine a substantive
    value judgment. Because all procedural rules have some impact
    on how rights are exercised, we no longer apply the type of
    sliding scale called for by the substantial impact test, which
    required courts to somehow assess the magnitude of effects on
    regulated parties of a rule of agency procedure. The extent of
    the impacts or burdens on primary rights does not provide the
    dividing line between substantive and procedural rules,
    although it may mark when a procedural rule has such extreme
    effects that it is properly considered substantive.
    III.
    The 2019 Rule does not encode a substantive value
    judgment, and it governs only secondary conduct by
    establishing procedures for representation elections. The
    relevant primary conduct, namely the rights protected by the
    National Labor Relations Act, is employee representation for
    the purpose of collective bargaining, which must be determined
    in “an election by secret ballot.” See 
    29 U.S.C. § 159
    (c)(1).
    These rights remain untouched by the Rule. The majority does
    not contest the Rule governs secondary conduct. Rather the
    majority simply applies the old standard and tries to gauge the
    extent of any impacts of these procedural choices on the rights
    of unions and employers.
    Applying the correct standards, the critical fact for the
    challenged provisions in the 2019 Rule is that they do not
    change the “substantive standards” governing who wins and
    who loses elections, or who is part of the bargaining unit. See
    Jem Broad., 
    22 F.3d at 327
    . The majority never claims they do.
    Instead, each provision changes the details of how an election
    is conducted. Any substantive effect is incidental. See Bowen,
    8
    
    834 F.2d at 1047
    . The effects of the rule are apparently minor,
    as the majority nowhere suggests that the procedures have
    grave or extreme impacts. The five provisions are properly
    classified as procedural, and therefore notice and comment was
    not required for any of them. I address each of the rules in turn.
    A.
    Pre-Election Litigation Timing. Employers and unions
    may disagree about which employees are part of the bargaining
    unit and thus eligible to vote in any election. If such a dispute
    arises, the parties may resolve it by agreement or by
    adjudication in front of the Board. Under the 2014 Rule, the
    election would go forward, even if a dispute were still pending.
    79 Fed. Reg. at 74,482. The 2019 Rule reverses the timing:
    “Disputes concerning unit scope, voter eligibility and
    supervisory status will normally be litigated and resolved by
    the Regional Director before an election is directed.” 84 Fed.
    Reg. at 69,593. This is a classic procedural rule that favors
    finality over speed and reflects no substantive value judgments.
    The provision does not change whether the election will occur
    or who will win, only when and how the election happens. I
    agree that this is a procedural rule. Maj. Op. 37.
    B.
    Election Scheduling. Once a regional director orders an
    election, it must be scheduled. The 2019 Rule requires that the
    election be scheduled on “the earliest date practicable” but
    “normally not … before the 20th business day after” an election
    is directed. 84 Fed. Reg. at 69,595. The 2014 Rule, on the other
    hand, required elections to be scheduled as early as practicable.
    79 Fed. Reg. at 74,485. Such scheduling implicates no
    substantive value judgment, but rather promotes the procedural
    concern for finality, allowing the Board sufficient time to
    resolve eligibility disputes in advance. As with the provision
    9
    concerning pre-election litigation, this provision does not
    change whether the election will occur, only when. The 20-day
    provision is also procedural, as the majority concludes. Maj.
    Op. 41.
    C.
    Voter List Timing. Once an election has been directed, the
    employer must provide a list of all eligible voters to the union
    and the Board. This voter list contains names, job titles, and
    contact information to facilitate the union’s campaign
    activities. Before 2014, employers had seven days to turn over
    the list. 84 Fed. Reg. at 69,527. The 2014 Rule reduced the time
    to two business days. Id. The 2019 Rule provides five business
    days. Id. at 69,526. The majority concludes the provision is
    substantive because it “‘trenches on’ the union’s substantive
    interest in campaigning on equal footing.” Maj. Op. 20. The
    majority, however, applies the wrong legal standard and
    therefore reaches the wrong legal conclusion.
    To begin with, the rule is facially procedural because it
    does not “alter the substantive criteria” by which elections are
    won or lost. See Glickman, 
    229 F.3d at 281
    . Five business days
    for exchanging voter lists embodies no substantive value
    judgment and merely implements an established pre-election
    procedure. In moving from two to five days, the Board
    explained that “providing more time to produce the voter list
    will reduce the potential for inaccurate lists, as well as the
    litigation and additional party and Agency expenditures that
    may result therefrom.”2 84 Fed. Reg. at 69,532. The rule serves
    2
    The majority asserts five days is unreasonable because the Board in
    2014 found two days a reasonable time frame for providing the voter
    lists. Maj. Op. 22. But what the Board thought reasonable at one time
    cannot serve as the perennial benchmark for what is reasonable in the
    future. Importantly, here the Board recognized that although
    10
    procedural concerns, like facilitating accurate lists, promoting
    agreement, and avoiding litigation. Id. at 69,532.
    When a procedural rule concerns the timeframe for
    asserting substantive rights, “the proper question is whether the
    time allotted is so short as to foreclose effective opportunity to
    make one’s case on the merits.” Lamoille Valley, 711 F.2d at
    328. An unusually short time frame could impose the type of
    “extreme procedural hurdle[]” that converts a procedural rule
    into a substantive one. Id. No extreme hurdle exists here.
    Moving from two business days to five, in a pre-election period
    that normally lasts a minimum of 20 business days, hardly
    forecloses a union’s ability to campaign or imposes an extreme
    procedural hurdle. Rather it is the type of “incidental
    mechanical burden[] on regulated” parties that we have
    classified as procedural. See Bowen, 
    834 F.2d at 1051
    .
    The majority does not identify any substantive value
    judgment encoded in the voter list provision. Nor does it
    suggest that the rule regulates primary conduct. Instead, the
    majority concludes the provision is substantive because the
    union has an “interest in campaigning on equal footing” and
    the voter list provision “necessarily burdens [that] interest.”
    Maj. Op. 21. This analysis effectively returns to the obsolete
    “substantial impacts” test, here perhaps just an “impacts” test.
    See Maj. Op. 26 (expressing skepticism that three days “has de
    minimis impact”) (cleaned up).
    “technological changes … may permit some employers to more
    quickly compile and transmit the voter list,” this was not true for all
    employers and additional challenges existed for “decentralized
    employers,” the “construction industry,” and “joint or multi-
    employer arrangements.” 84 Fed. Reg. at 69,531–32. In light of that
    finding, the Board could reasonably adjust the timeline for providing
    voter lists.
    11
    On the majority’s reasoning, election rules will rarely be
    procedural, and the Board has been acting improperly for
    decades.3 The reality, of course, is that every election rule will
    have some impact on the parties to an election. The majority’s
    reasoning is precisely that the burden, which looks a lot like a
    “substantial impact,” makes the rule substantive. This runs
    contrary to this court’s repeated recognition that all procedural
    rules place some burden on regulated parties and therefore that
    such burden alone does not make a rule substantive. See, e.g.,
    Glickman, 
    229 F.3d at 281
     (“[A]n otherwise-procedural rule
    does not become a substantive one, for notice-and-comment
    purposes, simply because it imposes a burden on regulated
    parties.”).
    Two days is reasonable to wait for a voter list, but not
    five—what about three or four days? Judicial parsing of an
    agency’s procedural choices has never been the standard for
    drawing a line between substantive and procedural rules. Under
    our precedents, in the absence of some showing that the five-
    day timeline effectively forecloses the union’s rights, simply
    stating that the rule imposes some burdens does not make it a
    substantive rule.
    D.
    Certification Timing. The regional directors “shall certify
    the results” of representation elections. 
    29 U.S.C. § 159
    (c)(1);
    3
    The majority also emphasizes the voter list “facilitates the
    transmission of information between parties,” not just between one
    party and the Board. Maj. Op. 23. But a procedure governing conduct
    between parties with respect to an election supervised by the Board
    can be a procedural rule under section 553(b)(A), and I am aware of
    no case in which we have held that a rule of procedure becomes
    “substantive” simply because it governed the procedure between
    parties to an agency proceeding.
    12
    see also 
    id.
     § 153(b). Under the 2014 Rule, certification
    proceeded regardless of whether a request for review of the
    election was pending before the Board. 79 Fed. Reg. at 74,487.
    Under the 2019 Rule, a regional director may certify election
    results only after Board review is complete. 84 Fed. Reg. at
    69,526. Like the other provisions, the timing for certification
    governs the procedures of elections. It does not affect who wins
    or loses an election, and it does not change the substantive
    criteria for representation. See Glickman, 
    229 F.3d at 281
    .
    Delaying certification until Board review is complete may
    affect the right to bargain because certification is the moment
    from which substantive legal rights attach. See 
    29 U.S.C. § 158
    (a)(5). The majority considers this “effect … on the right
    to collective bargaining” sufficient to make the certification
    timing a substantive rule. Maj. Op. 29 (discussing the Rule’s
    “direct impact”). This again misstates the relevant standards,
    because we do not consider the “effect” or “direct impact” of
    procedural requirements to gauge whether they are a
    substantive regulation. Choosing to delay certification does not
    reflect a substantive value judgment. When the “timetable for
    asserting substantive rights” is at issue, “the proper question is
    whether the time allotted is so short as to foreclose effective
    opportunity to make one’s case on the merits.” Lamoille Valley,
    711 F.2d at 328. Or put another way, agencies are allowed to
    “establish a terminal point” in procedural rules, even if the
    timing of substantive rights are affected. See JEM Broad., 
    22 F.3d at 326
    . Only when a procedural timeline is “sufficiently
    grave” does it become a substantive rule.
    The certification timing rule simply requires the regional
    director to wait for Board review before certifying the results
    of an election. The rule does not change whether certification
    will occur or whether employees will be represented. Instead,
    it sequences the Board and regional director’s actions to
    13
    promote certainty and finality and avoid unnecessary litigation.
    The majority does not suggest the timeline here would have any
    grave impacts, perhaps because in practice the additional delay
    from the 2019 Rule ranges from minimal to nonexistent. To
    challenge an election in court, the employer must “refuse to
    bargain with the union certified by the Board” and wait for “an
    unfair labor practice complaint” to be filed. Physicians Nat’l
    House Staff Ass’n v. Fanning, 
    642 F.2d 492
    , 495 (D.C. Cir.
    1980) (en banc). Yet, if the election is complete, the employer
    has a legal obligation to bargain. To mitigate this catch-22,
    regional directors “generally hold refusal-to-bargain charges in
    abeyance” pending an employer’s challenge to the election.4 84
    Fed. Reg. at 69,555. As a practical matter, this means the legal
    rights flowing from certification, namely rights to collective
    bargaining, are usually stayed, which for all intents and
    purposes is the same as staying certification. The 2019 Rule
    delays certification until after Board review, which has the
    same results as the 2014 Rule, but without “needless
    litigation.” Id.
    Numerous decisions of this circuit have recognized that
    rules adjusting the timing for exercising substantive rights are
    procedural. For instance, in Public Citizen, we addressed a
    State Department policy against searching for any FOIA
    documents produced after the date of the request. 276 F.3d at
    637. The FOIA policy affected what documents would be
    produced. See id. We nonetheless found the so-called “cut-off
    policy” encoded “no substantive value judgment” because it
    applied equally to all FOIA requests. Id. at 641 (cleaned up).
    Therefore, we concluded the policy was a “prototypical
    4
    The majority labels the practice of staying refusal-to-bargain
    charges as “underenforcement.” Maj. Op. 27. But a stay is not
    underenforcement, just delayed enforcement, which is why this
    provision is procedural.
    14
    procedural rule properly promulgated without notice and
    comment.” Id. Similarly, in Lamoille Valley, a rule shortened
    the timeline for railroads to respond to a proposed merger from
    90 days to 60 days. 711 F.2d at 327. Because it was a
    procedural schedule that did not foreclose the effective
    opportunity to win on the merits, we upheld it as a procedural
    rule. Id. at 328. Finally, in JEM Broadcasting, we found a rule
    establishing a “fixed filing period” of 30 days for FM station
    license applications, with no opportunity to correct, was a
    “straightforward” procedural rule. 
    22 F.3d at 322, 326
    .
    Although the rule could be “described as affecting substance”
    and might even be “harsh” in some cases, it did not change the
    “substantive standards by which the FCC evaluate[d] license
    applications.” 
    Id.
     at 326–27 (cleaned up). This was fatal to the
    claim that the rule was substantive. The court concluded that
    establishing a cut-off date was part of a necessary and
    reasonable procedural rule. 
    Id. at 327
    .
    The majority fails to distinguish these cases. It makes a
    puzzling suggestion that there is a material difference between
    “asserting” and “exercising” substantive rights, such that the
    timing for asserting rights is procedural, but the timing for
    exercising rights is substantive. Maj. Op. 27–28. Yet the
    assertion and exercise of rights is invariably linked, and so it is
    unsurprising that the majority’s distinction finds no support in
    the APA and has been rejected by our caselaw.
    The majority’s approach—labeling some rights
    substantive and important and others less so—will result in
    uncertainty and produces contradictory results even in this
    case. Delayed certification is supposedly substantive because it
    “directly alters an employer’s legal duty and its employees’
    associated substantive right.” Maj. Op. 40. On this reasoning,
    the rule that postpones an election for some 20 days would also
    be substantive because it necessarily postpones certification
    15
    and the attachment of the employer’s legal duty. Yet the
    majority properly classifies the 20-day rule as procedural.
    Because both rules have some effects or impacts on the parties’
    rights, the majority’s different treatment amounts to finding
    one provision has more substantial effects than the other, in
    contravention of our caselaw.
    Most timelines for regulatory procedure have some impact
    on substantive rights, but without a showing that the timeline
    egregiously undermines those rights, we have accepted them as
    an ordinary and essential aspect of agency procedures. Like the
    20-day rule, the certification timing provision is a reasonable
    procedural choice and notice and comment was not necessary.
    E.
    Election Observer Qualifications. From its earliest days,
    the Board has allowed parties to have observers at elections as
    a “courtesy” or “privilege.” 84 Fed. Reg. at 69,551. The Board
    has held it is not an abuse of discretion to revoke this courtesy.
    Id. Although the Board generally lets the parties select their
    own observers, that practice is subject to limitations imposed
    by the regional directors or the Board. To make this process
    more transparent and efficient, the 2019 Rule provides that
    “whenever possible, a party shall select a current member of
    the voting unit as its observer, and when no such individual is
    available, a party should select a current nonsupervisory
    employee as its observer.” Id. at 69,552.
    This is a typical procedural rule. It streamlines a
    discretionary process the Board has created to improve the
    administration of elections. A rule is properly classified as
    procedural if it addresses secondary conduct. The procedural
    exception “covers agency actions that do not themselves alter
    the rights or interests of parties, although it may alter the
    manner in which the parties present themselves.” See JEM
    16
    Broad., 
    22 F.3d at 326
     (quoting Batterton v. Marshall, 
    648 F.2d 694
    , 707 (D.C. Cir. 1980)). The “rights or interests of parties”
    in this context means primary rights and interests, not an
    interest in a particular kind of procedure. See id. at 328.
    Because the election observer provision does not alter the
    scope of representation, it does not impose a new “substantive
    burden.” Maj. Op. 33 (cleaned up).
    The majority cannot label the election observer rule as
    substantive because the rule does not encode a substantive
    value judgment. The Board’s judgment, to allow non-Board
    observers, is a procedural one. The wholly discretionary
    practice of allowing election observers helps “assure the parties
    and the employees that the election is being conducted fairly”
    and avoids the appearance of “partiality on the part of the
    Board.” 84 Fed. Reg. at 69,551. The point is transparency in an
    election procedure under the control of the Board. This is not a
    “substantive value judgment” within the meaning of our cases.
    All actions are necessarily “based on the value judgment that
    the chosen option is better, in some relevant way.” Glickman,
    
    229 F.3d at 282
    . When that value judgment goes to procedural
    values, like ensuring agency operations are accurate,
    transparent, and efficient, the rule is properly procedural. See
    JEM Broad., 
    22 F.3d at 328
    .
    The majority also misidentifies the relevant substantive
    interest. The parties have no interest in election observers for
    their own sake. Observation is just one procedure that helps
    protect the right to collective bargaining. See 
    29 U.S.C. § 159
    (a). Such procedures are ordinarily not substantive, even
    though they may impact substantive rights. For instance, we
    have held that a rule requiring audits be performed by
    nonagency accountants was procedural because the substantive
    requirement of an audit was unchanged—the rule affected only
    the question of how to “satisfy the audit requirement.”
    17
    Guardian Fed. Sav. & Loan Ass’n v. Fed. Sav. & Loan Ins.
    Corp., 
    589 F.2d 658
    , 665 (D.C. Cir. 1978) (cleaned up). Here,
    an election observer is like an auditor. A party might want a
    particular observer, but only because the observer helps it
    assert a substantive interest, not because the choice of observer
    changes that substantive interest.
    The majority does not identify what effects the election
    observer rule will have on the outcome of elections. In fact, it
    is hard to imagine it will have any. The mere fact that the rule
    may have some impact on elections does not suffice to turn a
    facially procedural rule into a substantive one. Nor does the
    majority find, as it must, that the effects here are “sufficiently
    grave.” See Lamoille Valley 711 F.2d at 328. The election
    observer rule is procedural and should be upheld.
    *    *    *
    The 2019 Rule does not change the scope of collective
    bargaining or the standards by which those rights are reviewed;
    rather, it adjusts schedules, timelines, and monitoring
    mechanisms. Like all procedural rules, the challenged
    provisions may affect how parties exercise their rights, but
    nothing here imposes the type of extreme procedural hurdle
    that converts a facially procedural rule into a substantive one.
    Under this circuit’s precedents, each of the provisions is
    properly classified as a procedural rule and therefore was
    permissibly promulgated without notice and comment.
    IV.
    Before 2014, when a party sought review within 14 days
    of the direction of an election, all ballots were impounded and
    remained unopened pending review. 84 Fed. Reg. at 69,547.
    The 2014 Rule eliminated the impoundment provision. The
    2019 Rule charts a middle course. Now if a party files for
    18
    review within ten days of the direction of an election, disputed
    ballots are segregated and impounded pending a decision of the
    Board. A request for review may be filed later than ten days,
    but ballots are not impounded. Id. at 69,526.
    The parties agree the impoundment provision is
    procedural. The AFL-CIO argues it should be set aside on two
    grounds: (1) The provision is arbitrary and capricious because
    ballots are automatically impounded, even when review might
    be rendered moot by the election results; and (2) the provision
    is contrary to 
    29 U.S.C. § 153
    (b). The majority vacates the
    provision as contrary to law, but I would uphold it as consistent
    with the statute and reasonably explained.
    A.
    Section 153(b) allows the Board to delegate its power to
    direct and certify elections, except that “the Board may review
    any action of a regional director.” 
    29 U.S.C. § 153
    (b). But
    “such a review shall not, unless specifically ordered by the
    Board, operate as a stay of any action taken by the regional
    director.” 
    Id.
     (emphasis added). To determine whether the
    impoundment provision is consistent with section 153(b)
    requires a two-part inquiry. First, is impoundment a stay? If
    not, there is no section 153(b) violation. Second, if
    impoundment is a stay, was it specifically ordered by the
    Board? If it was so ordered, there is no section 153(b) violation.
    The impoundment provision is clearly a stay, as the
    majority agrees. “Stay” is defined as the “[t]he postponement
    or halting of a proceeding, judgment, or the like.” BLACK’S
    LAW DICTIONARY 1639 (10th ed. 2014). Impoundment, the
    Board admits, “postpones” the tallying of ballots. 84 Fed. Reg.
    at 69,548. Counting ballots is an “action” a regional director
    may take as part of his delegated authority to “direct an
    election” and “certify the results thereof.” 
    29 U.S.C. § 153
    (b).
    19
    Therefore, counting is a statutory “action” of the director, and
    impoundment stays that action.5
    The plain language of the statute is reinforced by the
    impoundment provision in the 2019 Rule:
    The filing of such a request shall not, unless
    otherwise ordered by the Board, operate as a stay
    of the election …, except that if a request for
    review of a decision and direction of election is
    filed within 10 business days …, ballots whose
    validity might be affected by the Board’s ruling
    … shall be impounded and remain unopened
    pending such ruling or decision.
    
    29 C.F.R. § 102.67
    (c) (emphasis added); see also 
    id.
    § 102.67(h) (“The grant of a request for review shall not,
    outside [
    29 C.F.R. § 102.67
    (c)], stay the Regional Director’s
    action.”) (emphasis added). Because impoundment is an
    exception to the rule that review does not operate as a stay, the
    Rule clearly specifies that impoundment will act as a stay.
    Next, we must consider whether the impoundment
    provision in the 2019 Rule was “specifically ordered by the
    5
    The Board argues that “taken” can mean actions in the past, present,
    or future because “taken” is a participial adjective modifying the
    noun “action.” In isolation, a past participle has no temporal
    limitation and may refer, as the Board suggests, to past, present, or
    future action. When, however, a participle is postpositive, i.e.,
    appearing after the noun, it is timeless. In section 153(b), context and
    placement of the participle clarify its temporal reach. The participle
    “taken” appears after the noun it modifies: “any action taken by the
    regional director.” That means it applies to past, present, and future
    actions. Because impoundment is an “action taken” by the director,
    it fits within section 153(b).
    20
    Board.” 
    29 U.S.C. § 153
    (b). By promulgating a rule that
    provides conditions for when the impoundment will occur, the
    Board has specifically ordered a stay. The Board has discretion
    to delegate its power to direct and certify elections, and it
    retains the authority to review or withdraw that delegated
    power. While section 153(b) ensures that review by the Board
    will not operate as an implicit stay, the Board may stay the
    actions of a regional director at will. Nothing in the statute
    forecloses the Board from enacting a rule that establishes
    prospective criteria for when the actions will be stayed. Indeed,
    such rulemaking has the advantage of providing notice and
    predictability to parties. The impoundment provision was a
    specific order to issue stays in certain conditions.
    The majority maintains that a stay may be ordered only “in
    a particular case.” Maj. Op. 46. Of course, the Board may order
    a stay in a particular case, but nothing in section 153(b)
    precludes the Board from ordering a stay through rulemaking.
    Section 153(b) simply states: “such a review shall not, unless
    specifically ordered by the Board, operate as a stay.” The
    clause “unless specifically ordered by the Board” is not
    explicitly limited to reviews in a particular case, and so the
    Board may order a stay in a particular case, or it may issue an
    order through prospective rules. Section 153(b) does not
    constrain the Board’s choice.
    The impoundment provision of the 2019 Rule is a stay
    specifically ordered by the Board and therefore is consistent
    with section 153(b).
    B.
    As I conclude the impoundment provision is consistent
    with the statute, I must address the AFL-CIO’s argument that
    the provision is arbitrary and capricious because it creates
    uncertainty in the time between election and certification and
    21
    forces the Board to decide issues that may be moot. Under
    arbitrary and capricious review we consider whether the
    agency’s decision is “reasonable and reasonably explained.”
    FCC v. Prometheus Radio Project, 
    141 S. Ct. 1150
    , 1158
    (2021). The court should not substitute its policy judgments for
    that of the agency. Instead, we ask whether the agency has
    “considered the relevant issues” and adequately “explained the
    decision.” 
    Id.
     Here, we must recognize that “control of the
    election proceeding, and the determination of the steps
    necessary to conduct that election fairly were matters which
    Congress entrusted to the Board alone.” NLRB v. Waterman
    S.S. Corp., 
    309 U.S. 206
    , 226 (1940).
    In the 2019 Rule, the Board explained the impoundment
    provision will promote finality and certainty by preventing an
    immediate tally of the ballots from being invalidated after
    Board review. 84 Fed. Reg. at 69,548. It also noted a general
    rule will promote transparency and uniformity because all
    requests for review within ten days will stay the election
    pending review. Id. Finally, the Board noted that impoundment
    promotes ballot secrecy by hiding the sentiments of employees
    whose votes might be nullified upon future review. Id. These
    reasons comport with the Board’s responsibility for ensuring
    the efficient administration of fair elections and were
    reasonably explained.
    The AFL-CIO’s concern—that the Board will conduct
    reviews that will be rendered moot by the election—was
    addressed by the Board. The Board recognized that
    impoundment comes with some cost to “promptness and
    efficiency,” but concluded such concerns were outweighed by
    the gains in finality, transparency, uniformity, and secrecy. 84
    Fed. Reg. at 69,548. It was reasonable to conclude these gains
    also outweighed any concerns that employers would be unsure
    how to act after an election, but before results are tallied. With
    22
    the 2014 Rule, that uncertainty simply existed at a different
    time: after certification, but before the end of the review
    process. Id. at 69,555 (“[W]here a certification issues
    notwithstanding the (potential) pendency of a request for
    review that may nullify the certification, the possibility for
    confusion is greatly amplified.”).
    The AFL-CIO may prefer a different procedure, but that
    does not render the Board’s judgment unreasonable. These
    procedural judgments are well within the Board’s statutory
    authority to manage elections. Therefore, the impoundment
    provision is not arbitrary or capricious.
    *    *   *
    I concur in the judgment with respect to our jurisdiction
    and the holding that the Board’s 2019 Rule is not arbitrary and
    capricious. I part ways with the majority because I would hold
    the Rule’s impoundment provision is consistent with law and
    reasonably explained and that all five challenged provisions of
    the 2019 Rule are procedural.
    The administrative law distinctions relevant to
    determining whether the Rule survives challenge are
    admittedly in the weeds. The APA requires notice and
    comment for substantive rules, but explicitly exempts
    procedural rules from these requirements. Drawing the proper
    line between procedural and substantive rules has important
    consequences, both to ensure that courts do not layer additional
    requirements on an agency’s procedural rules and also to
    ensure that agencies follow the requirements of notice and
    comment when imposing substantive value judgments against
    regulated parties. The majority distinguishes substantive from
    procedural rules by analyzing the extent of the burden on
    regulated parties—but such weighing of impacts is not what the
    APA requires and has been decisively rejected by this court.
    23
    The majority emphasizes the importance of the Board’s
    election procedures to collective bargaining rights. It is true
    that agency procedures are often consequential and impact
    parties’ rights. Nonetheless, our cases maintain that only rules
    regulating primary conduct or those with particularly grave
    effects are substantive, and the rules here are neither.
    Applying our circuit’s precedents, the 2019 Rule is
    procedural and therefore no notice and comment was
    necessary. Because I would uphold the 2019 Rule in full, I
    respectfully dissent in part.