ABM Onsite Services-West, Inc. v. National Labor Relations Board , 849 F.3d 1137 ( 2017 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued November 21, 2016              Decided March 7, 2017
    No. 15-1299
    ABM ONSITE SERVICES - WEST, INC.,
    PETITIONER
    v.
    NATIONAL LABOR RELATIONS BOARD,
    RESPONDENT
    INTERNATIONAL ASSOCIATION OF MACHINISTS AND
    AEROSPACE WORKERS, DISTRICT LODGE W24 AND LOCAL
    LODGE 1005,
    INTERVENOR
    Consolidated with 15-1347
    On Petition for Review and Cross-Application
    for Enforcement of an Order of
    the National Labor Relations Board
    Douglas W. Hall argued the cause and filed the briefs for
    petitioner.
    2
    Amy H. Ginn, Attorney, National Labor Relations Board,
    argued the cause for respondent. With her on the brief were
    Richard F. Griffin, Jr., General Counsel, John H. Ferguson,
    Associate General Counsel, Linda Dreeben, Deputy Associate
    General Counsel, and Usha Dheenan, Supervisory Attorney.
    David L. Neigus argued the cause and filed the brief for
    intervenor International Association of Machinists and
    Aerospace Workers, District Lodge W24 and Local Lodge
    1005 in support of respondent. Mark D. Schneider and William
    H. Haller entered appearances.
    Before: GRIFFITH, SRINIVASAN, and MILLETT, Circuit
    Judges.
    Opinion for the court filed by Circuit Judge GRIFFITH.
    GRIFFITH, Circuit Judge: This petition for review
    challenges the determination of the National Labor Relations
    Board that a union’s effort to represent the workers who handle
    airline baggage is governed by the National Labor Relations
    Act and not the Railway Labor Act. In reaching its conclusion,
    the Board departed from its precedent without offering a
    rationale for its new approach. We therefore vacate the Board’s
    order and remand the matter for further proceedings.
    I
    A
    The National Labor Relations Act, 
    29 U.S.C. §§ 151
     et
    seq., regulates most private-sector labor relations. Concerned,
    however, that labor strife in the railway and airline industries
    could disrupt commerce nationwide, Congress expressly
    carved out these industries, which were already covered by the
    3
    Railway Labor Act, from coverage under the NLRA
    framework when it passed the NLRA. See 
    id.
     § 152; see also
    Tex. & New Orleans R.R. v. Bhd. of Ry. & S.S. Clerks, 
    281 U.S. 548
    , 565 (1930) (remarking that “the major purpose of
    Congress in passing the Railway Labor Act was to provide a
    machinery to prevent strikes”). 1 The Act creates a “special
    scheme” for the railway and airline industries, premised on
    “their unique role in serving the traveling and shipping public
    in interstate commerce.” Verrett v. SABRE Grp., Inc., 
    70 F. Supp. 2d 1277
    , 1281 (N.D. Okla. 1999). Under this separate
    regulatory scheme, various mediation and arbitration boards
    work to resolve airline and railway labor disputes that could
    interrupt interstate commerce. See 
    id.
    The question of which labor scheme governs has
    meaningful consequences for both employers and employees.
    Chief among them are the different powers Congress has given
    the agencies that administer the relevant statutes. For example,
    the NLRB can initiate unfair-labor-practice proceedings and
    issue orders to employers, but the National Mediation Board
    (NMB), which administers the RLA, performs no law-
    enforcement function. The NMB’s role is limited mainly to
    determining whether employees in the airline and railway
    industries have chosen union representation and then mediating
    collective bargaining. In addition, under the RLA, both
    employers and employees must exhaust an extended
    negotiation and mediation process before they can lawfully
    resort to self-help measures, such as unilaterally altering
    working conditions or calling a strike. This prolonged process
    1
    Although the RLA initially applied only to rail carriers, “[a]ir
    carriers and their employees were made subject to the . . . Act in
    1936.” Bhd. of R.R. Trainmen v. Jacksonville Terminal Co., 
    394 U.S. 369
    , 381 n.16 (1969) (citing 
    45 U.S.C. §§ 181-182
    ).
    4
    is designed to avoid strikes and “keep transportation moving”
    in the specific subset of the American economy that concerns
    the RLA. Pan Am. World Airways, Inc. v. United Bhd. of
    Carpenters & Joiners of Am., 
    324 F.2d 217
    , 220 (9th Cir.
    1963). Under the NLRA, by contrast, employers and
    employees have much more latitude to engage in self-help.
    Employees often prefer to organize under the NLRA, as it
    protects a wider array of “concerted activity” by employees
    than does the RLA. See Beckett v. Atlas Air, Inc., 
    968 F. Supp. 814
    , 820 (E.D.N.Y. 1997) (citing cases).
    The RLA originally covered only common carriers, but
    Congress expanded the Act in 1934 to cover certain companies
    that perform transportation-related services for those carriers.
    As a result, a company is subject to the RLA and falls outside
    the jurisdiction of the NLRB if it “is directly or indirectly
    owned or controlled by or under common control with any
    carrier” and “operates any equipment or facilities or performs
    any service” related to transportation. 
    45 U.S.C. § 151
    .
    Whether a company is controlled by a carrier, however, is often
    unclear. Thus, “the NLRB and the NMB have, in the absence
    of any statute addressing the point, jointly developed their own
    method for determining their mutual jurisdictional question of
    whether the NLRA or the RLA governs” in any given case.
    United Parcel Serv., Inc. v. NLRB, 
    92 F.3d 1221
    , 1223 (D.C.
    Cir. 1996).
    The NLRB frequently refers the jurisdictional question to
    the NMB for an advisory opinion and then defers to the NMB’s
    view, based on the NMB’s expertise in administering the RLA.
    See United Parcel Serv., Inc., 
    318 N.L.R.B. 778
    , 780 (1995)
    (referring cases to the NMB “enables the [NLRB] to obtain the
    NMB’s expertise on jurisdictional matters most familiar to it”),
    aff’d, 
    93 F.3d 1221
     (D.C. Cir. 1996); Pan Am. World Airways,
    Inc., 
    115 N.L.R.B. 493
    , 495 (1956) (explaining the NLRB’s
    5
    view of the NMB’s primacy in resolving jurisdictional
    questions that implicate the RLA). The NLRB follows this
    accepted practice when a party raises a colorable claim that the
    NLRB lacks jurisdiction. See Spartan Aviation Indus., 
    337 N.L.R.B. 708
    , 708 (2002) (“When a party raises a claim of
    arguable jurisdiction under the RLA, the Board generally refers
    the case to the National Mediation Board . . . for an advisory
    opinion. . . .”). This practice dates back to at least 1956. See
    Pan Am. World Airways, Inc., 115 N.L.R.B. at 495 (declining
    to assert jurisdiction in a case over which the NMB claimed
    jurisdiction). An exception exists to the general rule, however:
    under “long-standing practice,” the NLRB will not refer
    jurisdictional questions to the NMB in situations where NMB
    precedent provides a clear answer. United Parcel Serv., Inc.,
    
    92 F.3d at 1228
    .
    B
    The airlines that fly into and out of the Portland
    International Airport formed the Portland Airlines Consortium
    (“PAC” or “the Consortium”) to operate the airport’s baggage-
    handling system. Since 2011, the Consortium has retained
    ABM Onsite Services – West (“ABM” or “the Company”), an
    independent contractor, to run the system. 2 The issue in this
    case is whether ABM is a “carrier” under the RLA and thus
    falls outside the NLRB’s jurisdiction. The answer turns on the
    degree of control that the Consortium exercises over the
    Company. To assess that control, it is important to understand
    the extent of the Consortium’s contractual and practical
    involvement in a number of areas: how ABM employees do
    2
    These facts are drawn from the findings made by the NLRB’s
    regional director or come directly from the contract.
    6
    their jobs, how they are trained, what equipment they use, and
    even how they dress.
    Most notably, the contract allows the Consortium to
    establish all standard operating procedures and provide all
    operating manuals for ABM. These manuals serve as the basis
    for ABM employee training. The contract also allows the
    Consortium to keep a close eye on the performance of ABM
    and its employees. For example, the Company is required to
    provide the Consortium with access to documents dealing with
    its operations, its compliance with non-discrimination laws, its
    operations and maintenance safety plans, and reports of on-the-
    job accidents.
    In addition, the contract enables the Consortium to
    exercise influence over the Company’s personnel decisions.
    All of the Company’s staffing plans, for instance, must be
    approved by the Consortium before taking effect, and the
    Consortium’s general manager must approve overtime work by
    ABM employees. Importantly, the Consortium also has the
    right to approve any changes in the Company’s “key
    personnel,” and to direct the company to remove employees
    from the contract. The contract does not, however, authorize
    the Consortium to discipline the Company’s employees
    directly or require the Company to consult with it about
    discipline.
    Furthermore, the contract specifies that the Consortium is
    to provide the Company with certain equipment, such as
    electric vehicles to move baggage and industrial bicycles to get
    around the baggage-handling system. The Consortium also
    must provide, free of charge, office space for the Company at
    the airport. Finally, the contract dictates that ABM employees
    meet certain appearance standards and wear uniforms that
    display the Consortium’s logo, rather than the logo of ABM.
    7
    C
    In January 2015, the International Association of
    Machinists (the Union) filed a petition with the NLRB seeking
    to represent ABM’s “jammer technicians,” who ensure that
    passenger bags get from the airlines’ ticket counters to the
    aircraft, and its dispatchers, who take calls from airline
    employees regarding baggage issues and are the primary point
    of contact with the airlines. The Company protested that the
    NLRB lacked jurisdiction over the matter because the
    Company was subject to the RLA, not the NLRA. In the
    alternative, the Company argued, the NLRB should refer the
    jurisdictional question to the NMB for an advisory opinion. To
    resolve that jurisdictional question, the NLRB’s regional
    director held a hearing at which the Company’s facility
    manager and branch manager testified, along with two
    dispatchers. The regional director found that the Consortium
    did not exercise control over the Company and its employees
    within the meaning of the RLA and concluded that the NLRB
    thus had jurisdiction over the matter. The Company sought
    review of the order by the NLRB itself, which summarily
    denied the Company’s request and affirmed its own jurisdiction
    in a 2-to-1 decision. The majority determined that the petition
    raised “no substantial issues warranting review.” J.A. 608. The
    dissenting member, however, was not satisfied that the Board
    had jurisdiction, writing that “substantial evidence [exists] that
    the Portland Airlines Consortium is involved in [the
    Company]’s personnel decisions and operations, which may
    have been afforded insufficient weight by the Regional
    Director.” J.A. 608.
    That same day, a majority of ABM’s participating
    employees voted in favor of union representation. The NLRB
    certified the Union as the employees’ collective-bargaining
    representative. To challenge to the Board’s jurisdictional
    8
    ruling, the Company refused to bargain with the Union, which
    drew an unfair-labor-practice charge from the Union and a
    complaint from the regional director of the NLRB. The NLRB
    granted summary judgment against the Company, which then
    filed this petition for review. The NLRB cross-applied for
    enforcement of its order, and the Union subsequently
    intervened.
    We have jurisdiction under 
    29 U.S.C. §§ 160
    (f) and
    160(e).
    II
    This case turns on the fundamental principle that an
    agency may not act in a manner that is “arbitrary, capricious,
    an abuse of discretion, or otherwise not in accordance with
    law.” 
    5 U.S.C. § 706
    (2)(a). The NLRB has violated that
    cardinal rule here by applying a new test to determine whether
    the RLA applies, without explaining its reasons for doing so.
    Because an agency’s unexplained departure from precedent is
    arbitrary and capricious, we must vacate the Board’s order.
    Comcast Corp. v. FCC, 
    526 F.3d 763
    , 769 (D.C. Cir. 2008)
    (citing Pontchartrain Broad. Co. v. FCC, 
    15 F.3d 183
    , 185
    (D.C. Cir. 1994)).
    A
    Any company that is “directly or indirectly owned or
    controlled by” an airline is governed by the RLA, 
    45 U.S.C. § 151
    , provided that the company’s employees do work “that
    is traditionally performed by employees of . . . air carriers,” Air
    Serv Corp., 
    33 N.M.B. 272
    , 284 (2006). No party takes issue
    with the NMB’s interpretation on that latter point or disputes
    that ABM employees do work that is traditionally performed
    by employees of air carriers. As a result, because ABM is not
    9
    owned by air carriers, the only question in this case is whether
    it is controlled by them.
    In 1980, the NMB began “an extensive evaluation of its
    jurisdictional standards,” including on the issue of control, “in
    light of changing corporate relationships and increasing use of
    contractors to perform work integral to rail and air
    transportation.” Bhd. Ry. Carmen of the U.S. & Can., 
    8 N.M.B. 58
    , 61 (1980). Over the ensuing years, the NMB developed a
    list of six factors to guide it in determining whether a company
    is controlled by an air carrier. See, e.g., Miami Aircraft Support,
    
    21 N.M.B. 78
    , 81 (1993). As stated most directly by the NMB
    in 2006, the agency looked to (1) the extent of the carrier’s
    control over the manner in which the company conducts its
    business; (2) the carrier’s access to the company’s operations
    and records; (3) the carrier’s role in the company’s personnel
    decisions; (4) the degree of carrier supervision of the
    company’s employees; (5) whether company employees are
    held out to the public as carrier employees; and (6) the extent
    of the carrier’s control over employee training. See Air Serv
    Corp., 33 N.M.B. at 285.
    As framed by the NMB in that case, the “standard for
    satisfying” this test was “the degree of influence that a carrier
    has over discharge, discipline, wages, working conditions and
    operations,” as opposed to any kind of requirement “that a
    carrier hire, fire, set wages, hours and working conditions of
    contractor employees.” Id. (emphasis added); see also Roca v.
    Alphatech Aviation Servs., Inc., 
    961 F. Supp. 2d 1234
    , 1240
    (S.D. Fla. 2013) (explaining that control under the RLA would
    exist under the “NMB’s . . . test [when the] ‘carrier controls the
    details of the day-to-day process by which the contractor
    provides services—for example, the number of employees
    assigned to particular tasks, the employees’ attire, the length of
    their shifts, and the methods they use in their work.’” (quoting
    10
    Cunningham v. Elec. Data Sys. Corp., No. 06-cv-3530 (RJH),
    
    2010 WL 1223084
    , at *6 (S.D.N.Y. Mar. 30, 2010))). In other
    words, for the NMB to find the type of control that would
    trigger the jurisdiction of the RLA, an air carrier did not have
    to dictate decisions over employee discharge, discipline,
    wages, working conditions, and operations; it simply had to
    exercise some significant influence over those aspects of the
    employment relationship.
    Under this test, ABM would plainly fall under the control
    of air carriers. The NLRB does not even attempt to argue
    otherwise. Indeed, the NMB previously found control and
    jurisdiction with facts similar to these for many airline-services
    contractors. In fact, according to one commentator, the NMB
    “found RLA jurisdiction in all but one of over thirty [such]
    airline-control cases” it considered between the mid-1990s and
    2011. Brent Garren, NLRA and RLA Jurisdiction over Airline
    Independent Contractors: Back on Course, 31 ABA J. LAB. &
    EMP. L. 77, 93 (2015).
    Air Serv Corp. is an especially clear example of how that
    agency used to find carrier control over contractors like ABM.
    With apologies to the reader for the lengthy excerpt, the
    NMB’s discussion of the key facts in Air Serv shows that there
    is little daylight between that contractor’s situation and
    ABM’s:
    United’s flight schedules affect the work
    schedules of Air Serv employees. United
    establishes a minimum level of staffing. United
    provides and repairs the equipment used by Air
    Serv to service the Carrier’s aircraft. United
    provides many of the supplies Air Serv uses to
    service the aircraft. United specifies the
    cleaning supplies which must be used to clean
    11
    its aircraft. In order to perform periodic security
    and safety audits, United has access to Air
    Serv’s       records       regarding    personnel,
    maintenance, and training. United’s [internal]
    regulations appear, by reference, to be an
    extensive set of regulations and standards that
    must be adhered to under the terms of the
    Services Agreement. Through [its internal]
    regulations[,] United dictates the cleaning
    guidelines and procedures for servicing the
    aircraft. Air Serv has very little discretion
    concerning how or when to provide service.
    Although Air Serv supervises its own
    employees, United exercises a great deal of
    control over Air Serv employees through its
    comprehensive monitoring of the contract’s
    performance. This monitoring includes:
    monetary performance penalties, minimum
    staffing levels, daily vendor meetings, detailed
    . . . regulations and regular audits.
    Air Serv Corp., 33 N.M.B. at 285-86.
    Indeed, there is no meaningful distinction between the
    control United exercised over Air Serv and the control carriers
    exercise over ABM. Here, the carriers’ flight schedules
    determine the work schedules of the Company’s employees.
    The Consortium decides when, where, and how many
    employees work at a time. It provides much of the equipment
    the Company uses, along with office space. The Consortium
    specifies the exact procedures by which ABM employees do
    their jobs, and it has access to ABM employee-training and
    qualifications records. The Consortium’s general manager
    directly trains ABM employees on bag hygiene, and when the
    12
    general manager does not do the training himself, the
    Consortium still provides the training materials and dictates the
    procedures to be followed. And even though ABM supervises
    its own employees, the Consortium wields a great deal of
    influence in practice through its comprehensive monitoring of
    the contract’s performance. If anything, carriers appear to
    exercise more control over ABM than United did over Air
    Serv, given the Consortium’s contractual right to approve
    changes in key ABM personnel, its control over the appearance
    of ABM employees, and the fact that the Consortium places its
    own logo on ABM employees’ uniforms.
    Had the NLRB followed the NMB’s analysis in Air Serv,
    there is no question that ABM would be covered by the RLA
    and that the NLRB would have no jurisdiction over this labor
    dispute. Indeed, even in prior cases where carrier influence
    over personnel decisions was a factor weighing in favor of a
    finding of control, the NMB never went so far as to hold that
    the ability to discipline or discharge company personnel was
    necessary or even that it was a factor to be given significantly
    greater weight than the others. See, e.g., Complete Skycap
    Servs., Inc., 
    31 N.M.B. 1
    , 5 (2003) (listing the fact that carriers
    “may request removal of an employee” as merely one of the
    many factors favoring a finding of control). Moreover, in the
    past, the NMB had found control even where there was no
    indication that an airline “ha[d] the right to request employee
    discipline or removal” and where “there [was] no evidence that
    [the airline] ha[d] []ever requested [the contractor] to discipline
    or remove an employee.” Kanonn Serv. Enters. Corp., 
    31 N.M.B. 409
    , 417 (2004). 3 If the ability to dictate personnel
    actions (especially negative ones) had been a necessary
    3
    The NMB has never directly overruled or even disavowed
    these decisions. See Garren, supra, at 102-03.
    13
    condition for finding RLA-level control, the NMB would have
    reached the opposite result in such cases. By the same token,
    had the NLRB followed the reasoning used in those cases here,
    it would have concluded that the RLA governed the dispute
    with ABM even though the airlines cannot discipline or
    effectively fire ABM’s employees.
    In a clear departure from precedent, however, the NMB in
    2013 began requiring that air carriers exercise a substantial
    “degree of control over the firing[] and discipline of a
    company’s employees” before it would find that company
    subject to the RLA. Huntleigh USA Corp., 
    40 N.M.B. 130
    , 137
    (2013); see also Aero Port Servs., Inc., 
    40 N.M.B. 139
    , 143
    (2013) (finding that a cargo-screening company was not
    subject to air-carrier control, based on a lack of direct
    involvement by the airlines in employee discipline). 4 The
    NMB made no effort to explain this change to its test for RLA
    jurisdiction. The agency expanded on this approach later that
    year in Bags, Inc., where it found especially relevant that the
    employer made the final disciplinary decisions, even though
    airlines could provide “input” into the process. See 
    40 N.M.B. 165
    , 170 (2013). The NMB determined that meaningful control
    was lacking even though, in this line of cases, carriers provided
    training and operating-procedure manuals, Menzies Aviation,
    Inc., 
    42 N.M.B. 1
    , 2 (2014); determined staffing levels, 
    id.
     at
    4
    The NMB also emphasized that Aero Port Services’ contract
    involved “the type of control expected in nearly any contract for
    services.” 
    40 N.M.B. 139
    , 143 (2013). Although the NMB did not
    explain what a typical contract for services looks like, it subsequently
    recited similar language in Bags, Inc., where it observed that “the
    type of control exercised by the [airlines] over [the employer] is
    found in almost any contract between a service provider and a
    customer.” 
    40 N.M.B. 165
    , 170 (2013). The NMB has continued to
    use this language ever since. See Menzies Aviation, Inc., 
    42 N.M.B. 1
    , 4, 7 (2014); Airway Cleaners, LLC, 
    41 N.M.B. 262
    , 268 (2014).
    14
    4; Aero Port Servs., 40 N.M.B. at 141; controlled scheduling,
    Bags, Inc., 40 N.M.B. at 170; provided equipment and space,
    id.; Menzies Aviation, 42 N.M.B. at 2; recommended
    promotions, Airway Cleaners, LLC, 
    41 N.M.B. 262
    , 266
    (2014); and possessed veto authority over material changes to
    contractors’ staff, 
    id. at 265
    .
    We are not the first to remark on this shift in the NMB’s
    analysis. In an order issued just two months before the NLRB
    granted summary judgment against ABM, an NLRB member
    observed “that in . . . recent cases, the National Mediation
    Board . . . ha[d] issued advisory opinions to the NLRB
    declining jurisdiction, despite air carriers providing detailed
    specifications as to the employer’s performance of work
    traditionally performed by carriers (and their auditing that
    performance).” Primeflight Aviation Servs., Inc., 12-RC-
    113687, 
    2015 WL 3814049
    , at *1 n.1 (June 18, 2015)
    (describing the view of Board Member Harry I. Johnson, III).
    In that member’s assessment, “these cases represent[ed] a shift
    by the NMB from earlier opinions in which it had asserted
    jurisdiction on similar grounds.” 
    Id.
    In 2014, a member of the NMB noted the same change:
    “In recent cases where the [National Mediation] Board has
    declined to find jurisdiction over similar companies, it [has]
    generally relied on the absence of substantial control over ‘the
    firing and discipline of a company’s employees . . . .’” Airway
    Cleaners, 41 N.M.B. at 275-76 (2014) (Geale, Mem.,
    concurring in part and dissenting in part) (quoting Huntleigh
    USA Corp., 30 N.M.B. at 137). “Those cases,” Board Member
    Nicholas Geale explains, “appear to overly emphasize that
    aspect compared to [earlier] NMB precedent.” Id. Member
    Geale reiterated those concerns later that year, dissenting from
    another NMB advisory opinion. See Menzies Aviation, Inc., 42
    N.M.B. at 8 (Geale, Mem., dissenting) (confessing “difficulty
    15
    understanding what, if any, evidence could convince [the
    NMB] of coverage under our traditional . . . test”). The NMB’s
    decision to find no control in Menzies Aviation is remarkable
    in light of its prior decisions because, as Member Geale
    observes, the airline in that case had the right to demand the
    removal of particular vendor employees from the contract. See
    id. (Geale, Mem., dissenting). These cases and commentary
    from members of both boards demonstrate that, under the test
    the NMB now applies, the NMB will not find control for RLA
    purposes if the contractor is ultimately allowed “to determine
    the appropriate discipline” for its own employees. See id. at 6
    (majority opinion). That rule is impossible to square with cases
    from just a few years earlier. Cf. Garren, supra, at 103 (noting
    that the NMB’s decisions in Airway Cleaners and other recent
    cases “seem[] inconsistent with [the] more than thirty decisions
    from 1996-2011 that found RLA jurisdiction” under similar
    facts).
    In ABM’s case, the NLRB found “that the record did not
    establish whether an employee’s removal from service” at the
    airport—which the Consortium has the right to request or
    require under certain circumstances—“would effectively result
    in the employee’s discharge” from the company. J.A. 568. The
    NLRB also emphasized that the Company “conducts its own
    investigations of [its] employees” before doling out discipline.
    J.A. 568. Under those facts, the most recent NMB precedent
    (on its own) might justify the NLRB’s determination that
    carriers exercise insufficient control over ABM for the RLA to
    apply. See Menzies Aviation, 42 N.M.B. at 6 (explaining that
    “the authority to remove employees” from a contract is relevant
    only when “an employee has been terminated following a
    carrier request that he or she be removed from the contract”
    (emphasis added)). After all, it is far from clear that the
    Consortium has the power to determine discipline for ABM
    16
    employees or to ensure that those employees are fired from the
    Company (and not just removed from service at the airport).
    And that is the very reasoning the NLRB used to conclude
    that the RLA did not apply here. See J.A. 571 (citing Menzies
    Aviation, Inc., 
    42 N.M.B. 1
    ; Airway Cleaners, LLC, 
    41 N.M.B. 262
    ; and Bags, Inc., 
    40 N.M.B. 165
    ) (finding PAC’s ability to
    discipline and discharge ABM employees lacking and
    observing “that the degree of control that PAC has over [ABM]
    is contractually no greater than the type of control exercised in
    a typical subcontractor relationship”). Yet the NMB never
    expressly disavowed its precedent that took all six factors into
    account when determining whether a carrier controlled a
    contractor. Nor did the NMB ever explain why it decided to
    replace that traditional approach with an analysis that
    emphasized carrier control of discipline and discharge. Given
    the NLRB’s previous endorsement of the prior approach, see,
    e.g., Aircraft Serv. Int’l Grp., 
    342 N.L.R.B. 977
     (2004), it was
    not enough for the NLRB simply to follow suit without an
    explanation for why it, too, was leaving behind settled
    precedent.
    B
    The NLRB claims that “the NMB has primary authority to
    interpret the RLA,” Oral Arg. Tr. 30:6-7, and readily
    acknowledges that its practice is “to apply the NMB’s test,” 
    id. at 26:22-23
    . Indeed, the NLRB has for years hitched its wagon
    to the NMB’s star, including in formal, published opinions.
    See, e.g., Aircraft Serv. Int’l Grp., 342 N.L.R.B. at 977. When
    the NLRB first adopted and applied the NMB’s traditional test,
    it bound itself to continue doing so; any deviation would
    require a reasoned explanation. In finding that it had
    jurisdiction over the Company, however, the NLRB relied
    exclusively on the NMB’s most recent precedent—silently
    17
    elevating the airlines’ power over personnel decisions to
    dispositive status.
    It is well-settled that the NLRB—like any other agency—
    cannot “turn[] its back on its own precedent and policy without
    reasoned explanation.” Dupuy v. NLRB, 
    806 F.3d 556
    , 563
    (D.C. Cir. 2015); see also E.I. Du Pont de Nemours & Co. v.
    NLRB, 
    682 F.3d 65
    , 70 (D.C. Cir. 2012) (explaining that the
    NLRB must “give a reasoned justification for departing from
    its precedent”). Generally speaking, “the requirement that an
    agency provide reasoned explanation for its action . . .
    demand[s] that it display awareness that it is changing position.
    An agency may not, for example, depart from a prior policy sub
    silentio or simply disregard rules that are still on the books.”
    FCC v. Fox Television Stations, Inc., 
    556 U.S. 502
    , 515 (2009).
    And if “a party makes a significant showing that analogous
    cases have been decided differently, the agency must do more
    than simply ignore that argument.” LeMoyne-Owen Coll. v.
    NLRB, 
    357 F.3d 55
    , 61 (D.C. Cir. 2004). Thus, when the Board
    fails to explain—or even acknowledge—its deviation from
    established precedent, “its decision will be vacated as arbitrary
    and capricious.” Manhattan Ctr. Studios, Inc., v. NLRB, 
    452 F.3d 813
    , 816 (D.C. Cir. 2006).
    Because the NLRB follows the NMB’s lead in interpreting
    and applying the RLA, the question becomes how to treat an
    unacknowledged and unexplained deviation from precedent by
    the NLRB that is precipitated by a likewise unacknowledged
    and unexplained deviation from precedent by the NMB. We
    hold that, under such circumstances, the NLRB is not free to
    simply adopt the NMB’s new approach without offering a
    reasoned explanation for that shift. Indeed, an agency cannot
    avoid its duty to explain a departure from its own precedent
    simply by pointing to another agency’s unexplained departure
    from precedent. This is a corollary of the rule that an agency
    18
    cannot justify a departure from its precedent simply by pointing
    to another one of its cases that departed from precedent, if that
    other case does not itself announce the new standard or a
    supporting rationale for it. See Ramaprakash v. FAA, 
    346 F.3d 1121
    , 1128-29 (D.C. Cir. 2003) (citing Hatch v. FERC, 
    654 F.2d 825
    , 834 (D.C. Cir. 1981)).
    In short, the NLRB should have recognized that
    longstanding NMB precedent—which the NLRB previously
    followed—compelled a finding of control in this case. The
    NLRB may have fairly read recent NMB opinions to require
    greater carrier control over personnel matters than the record
    evinced here. But rather than ignore the NMB’s earlier
    precedent, which it had effectively adopted as its own, the
    NLRB was obligated to consider that precedent and
    acknowledge the conflict in this case. See Hatch, 
    654 F.2d at 834-35
     (requiring “explicit recognition by [an agency] that the
    standard has been changed” and a genuine “attempt to
    forthrightly distinguish or outrightly reject apparently
    inconsistent precedent”). At that point, the NLRB would have
    had two options. First, it could have attempted to offer its own
    reasoned explanation for effectively whittling down the
    traditional six-factor test. It would have needed to explain why
    such a change was appropriate, how the new test reasonably
    interprets the RLA, and why the NLRB has decided to
    determine for itself the appropriate test rather than keeping
    with its past practice of referring such questions to the NMB
    and deferring to their formulation of the test for RLA
    jurisdiction. Or the NLRB could have simply referred this
    matter to the NMB and asked that agency to explain its decision
    to change course. If the NLRB were persuaded, it could then
    have adopted the NMB’s explanation as its own. The NLRB,
    however, followed neither path. As a result, we must vacate the
    NLRB’s order as arbitrary and capricious.
    19
    At oral argument, counsel for the NLRB was asked what
    the appropriate remedy would be if the Board had in fact
    applied a new test without explanation. Counsel suggested that,
    on remand, it would be up to the NLRB to provide some
    explanation justifying the new test or to identify another
    agency that could. See Oral Arg. Tr. 24:1-6. We agree. Either
    scenario is preferable to the present state of affairs, in which
    both employers and employees are caught in a web of
    conflicting precedent on the issue of RLA jurisdiction.
    III
    We grant the Company’s petition for review and deny the
    NLRB’s cross-application for enforcement. We vacate the
    NLRB’s order and remand for further proceedings consistent
    with this opinion.
    So ordered.