Steven J. Piper v. Jones Dairy Farm ( 2020 )


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    2020 WI 28
    SUPREME COURT           OF   WISCONSIN
    CASE NO.:              2018AP1681
    COMPLETE TITLE:        Steven J. Piper, Robert Bue, Scott R. Olson and
    Leslie T. Smith,
    Plaintiffs,
    Jonathon Kracht, Gary Benes and Charles Manley,
    Plaintiffs-Respondents,
    v.
    Jones Dairy Farm,
    Defendant-Appellant.
    ON BYPASS FROM THE COURT OF APPEALS
    OPINION FILED:         March 19, 2020
    SUBMITTED ON BRIEFS:
    ORAL ARGUMENT:         October 28, 2019
    SOURCE OF APPEAL:
    COURT:              Circuit
    COUNTY:             Jefferson
    JUDGE:              William F. Hue
    JUSTICES:
    DALLET, J., delivered the majority opinion of the Court, in which
    ANN WALSH BRADLEY, KELLY, and HAGEDORN, JJ., joined. ZIEGLER, J.,
    filed a dissenting opinion, in which ROGGENSACK, C.J., joined.
    REBECCA GRASSL BRADLEY, J., filed a dissenting opinion.
    NOT PARTICIPATING:
    ATTORNEYS:
    For the defendant-appellant, there were briefs (in the court
    of appeals) filed by Bernard J. Bobber, Keith E. Kopplin, Christina
    L. Wabiszewski and Ogletree, Deakins, Nash, Smoak & Stewart, P.C.,
    Milwaukee. There was an oral argument by Bernard J. Bobber.
    For the plaintiffs-respondents, there was a brief (in the
    court of appeals) filed by Micheal J. Modl and Axley Brynelson,
    LLP, Madison and Douglas J. Phebus, Victor Arellano, and Arellano
    & Phebus, S.C., Middleton. There was an oral argument by Michael
    J. Modl.
    2
    
    2020 WI 28
    NOTICE
    This opinion is subject to further
    editing and modification.   The final
    version will appear in the bound
    volume of the official reports.
    No.    2018AP1681
    (L.C. No.   2010CV1210)
    STATE OF WISCONSIN                      :              IN SUPREME COURT
    Steven J. Piper, Robert Bue, Scott R. Olson and
    Leslie T. Smith,
    Plaintiffs,
    FILED
    Jonathon Kracht, Gary Benes and Charles Manley,
    MAR 19, 2020
    Plaintiffs-Respondents,
    Sheila T. Reiff
    v.                                                   Clerk of Supreme Court
    Jones Dairy Farm,
    Defendant-Appellant.
    DALLET, J., delivered the majority opinion of the Court, in which
    ANN WALSH BRADLEY, KELLY, and HAGEDORN, JJ., joined. ZIEGLER, J.,
    filed a dissenting opinion, in which ROGGENSACK, C.J., joined.
    REBECCA GRASSL BRADLEY, J., filed a dissenting opinion.
    APPEAL from an order of the Circuit Court for Jefferson
    County, William F. Hue, Judge. Affirmed in part, reversed in part,
    and cause remanded.
    ¶1    REBECCA FRANK DALLET, J.   Current and former employees
    of Jones Dairy Farm (the employees) filed suit in December 2010
    seeking unpaid wages for time spent at the start and end of their
    No.    2018AP1681
    shifts "donning and doffing" personal protective equipment and
    walking to and from their workstations.               Jones Dairy Farm (JDF)
    denied liability, alleging the employees bargained over their
    right to compensation for this time during collective bargaining
    negotiations.          Alternatively, JDF asserted that the doctrine of
    de minimis non curat lex rendered this time non-compensable and
    that       equitable   defenses    precluded    the   employees'      recovery    of
    damages.        The circuit court denied JDF's motion for summary
    judgment, concluding that:           (1) the donning and doffing time was
    compensable; (2) the employees could not modify or eliminate
    compensation       for     donning     and     doffing      through       collective
    bargaining; (3) the time was not rendered non-compensable by the
    de minimis doctrine; and (4) JDF's four equitable defenses did not
    preclude the employees' recovery of damages.1
    ¶2      On bypass from the court of appeals,2 JDF presents one
    principal issue:         under Wisconsin law can compensation for donning
    and    doffing     personal       protective    equipment      be     modified    or
    eliminated through collective bargaining?             In the alternative, JDF
    contends that the de minimis doctrine renders the donning and
    doffing time non-compensable and that the equitable defenses of
    promissory       estoppel,    waiver,    laches,      and    unjust       enrichment
    preclude the employees' recovery of damages.
    Judge William F. Hue of Jefferson County Circuit Court
    1
    presided.
    Jones Dairy Farm filed a petition to bypass pursuant to Wis.
    2
    Stat. (Rule) § 809.60 (2017-18). All subsequent references to the
    Wisconsin Statutes are to the 2017-18 version unless otherwise
    indicated.
    2
    No.    2018AP1681
    ¶3      We conclude that under Wisconsin law, compensation for
    donning and doffing cannot be modified or eliminated through
    collective       bargaining.         We   assume   without        deciding    that   the
    de minimis doctrine applies to claims arising under Wis. Admin.
    Code § DWD 272.12 (May 2019),3 and determine that the time the
    employees spent donning and doffing was not de minimis.                        Lastly,
    we conclude that the circuit court erroneously exercised its
    discretion when it summarily dismissed JDF's equitable defenses on
    the    basis    of    
    Wis. Stat. § 109.03
    (5)     and    we     remand    for    full
    consideration of those defenses.                 We therefore affirm in part,
    reverse in part, and remand the case to the circuit court.
    I.    FACTUAL BACKGROUND AND PROCEDURAL POSTURE
    ¶4      JDF operates a food production plant in Fort Atkinson,
    Wisconsin.       JDF requires its employees to wear personal protective
    equipment, including safety footwear, frocks, hairnets, aprons,
    ear plugs, and plastic bump caps.                The employees are required to
    put on (don) and take off (doff) company-required equipment at the
    beginning and end of their shifts.
    ¶5      The employees' wages have historically been set by a
    collective       bargaining    agreement        between     the    United     Food   and
    Commercial Workers International Union, Local 538 (the Union) and
    JDF.       The 1979 collective bargaining agreement between the parties
    expressly compensated the employees for donning and doffing their
    personal       protective     equipment.         As   part    of     the     collective
    bargaining negotiations, in 1982, the parties stipulated that the
    All subsequent references to the Wis. Admin. Code ch. DWD
    3
    272 are to the May 2019 register date unless otherwise indicated.
    3
    No.   2018AP1681
    "daily credit" of compensated donning and doffing time would be
    reduced from 12 minutes to six minutes.                In 1985, JDF and the Union
    agreed to eliminate the provision that compensated the employees
    for donning and doffing.              In 1994, the Union proposed that JDF
    once again compensate the employees for 12 minutes of donning and
    doffing time.          At some point during the negotiations, the Union
    withdrew the proposal.               Collective bargaining resulted in an
    increase in the employees' base wages of $.60/hour.
    ¶6      When the parties reconvened for negotiations in 1997,
    the Union once again proposed 12 minutes of compensated time for
    donning and doffing.              The Union later withdrew the proposal and
    collective bargaining resulted in an increase in the employees'
    base wages of $.90/hour.              Again, when the collective bargaining
    agreement          expired   in    2000,    the    Union     made     a    proposal    for
    compensated donning and doffing time, which it later withdrew.
    This       time,    collective      bargaining      resulted     in       the    employees
    receiving a base wage increase of $1.50/hour.                        The same pattern
    occurred in 2004 and 2009:                 the Union's proposal was withdrawn,
    and base wages were ultimately increased by $1.25/hour.4
    ¶7      JDF    asserts     that     this    extensive    bargaining         history
    demonstrates          that    the    Union        withdrew     its        proposals    for
    compensation for donning and doffing in exchange for an increase
    in base wages.           However, it admitted at oral argument that the
    In 2006, the Union sent JDF a letter declaring that failure
    4
    to compensate the employees for donning and doffing and walking to
    workstations violated the law and "must be remedied immediately."
    The Union did not follow up or file a related grievance or wage
    claim with the Department of Workforce Development (DWD).
    4
    No.   2018AP1681
    record established "no direct tie" between the Union's withdrawal
    of the proposal and the employees receiving an increase in base
    wages.
    ¶8     In 2010, the employees filed this suit seeking unpaid
    wages for time spent donning and doffing personal protective
    equipment    and   walking   to   and       from   their    workstations.5     In
    response, JDF pleaded numerous affirmative defenses, including
    promissory estoppel, waiver, laches, and unjust enrichment.                   The
    parties stipulated that the total time employees spent donning and
    doffing was 4.3 minutes per day.6             The stipulation also included
    the amount of time the employees spent walking to and from their
    workstations, up to 4.33 minutes per day. The agreed-upon relevant
    time period at issue for the employees' claims was December 10,
    2008, to November 25, 2013.7
    ¶9     JDF moved for summary judgment alleging that the Union
    repeatedly    proposed   wages     for        donning      and   doffing   during
    collective bargaining negotiations and withdrew its proposals in
    5 The employees filed a class action made up of approximately
    227 current and former employees. The employees and JDF stipulated
    to the certification of four subclasses based upon the type of
    work that the employees performed.
    6 The only exception was for the employees who worked in the
    shipping department, where the vast majority of donning and doffing
    activities were not required.
    7 In August 2013 the court of appeals concluded that donning
    and doffing was compensable time under the "plain terms of the DWD
    code." Weissman v. Tyson Prepared Foods, Inc., 
    2013 WI App 109
    ,
    ¶2, 
    350 Wis. 2d 380
    , 
    838 N.W.2d 502
    .     Several months later, on
    November 25, 2013, JDF began compensating its employees for donning
    and doffing.
    5
    No.      2018AP1681
    exchange for higher base wages.                In the alternative, JDF asserted
    that the time was rendered non-compensable by the de minimis
    doctrine   and    that   recovery         of   damages     was    precluded        by   the
    equitable defenses of promissory estoppel, waiver, laches, and
    unjust enrichment.
    ¶10   The circuit court determined that pursuant to United
    Food & Commercial Workers Union, Local 1473 v. Hormel Foods Corp.,
    
    2016 WI 13
    , 
    367 Wis. 2d 131
    , 
    876 N.W.2d 99
    , the time employees
    spent donning and doffing was compensable.                        The circuit court
    further concluded that "there is no exception under Wisconsin law
    permitting    collective           bargaining      to     modify       or      eliminate"
    compensation for donning and doffing.                   Finally, the circuit court
    decided that the donning and doffing time here was not de minimis
    and that JDF's four equitable defenses did not preclude the
    employees' recovery of damages.
    ¶11   JDF petitioned this court for bypass of the court of
    appeals, which we granted.
    II.    STANDARD OF REVIEW
    ¶12   We review a decision on summary judgment using the same
    methodology      as    the     circuit         court.          Green     Spring      Farms
    v. Kersten, 
    136 Wis. 2d 304
    ,    314-15,       
    401 N.W.2d 816
        (1987).
    Summary judgment shall be granted where the record demonstrates
    "that there is no genuine issue as to any material fact and that
    the moving party is entitled to a judgment as a matter of law."
    
    Wis. Stat. § 802.08
    (2).
    6
    No.   2018AP1681
    ¶13       This case involves interpretation and application of
    Wis. Admin. Code § DWD 274.05 (April 2018).8                             We interpret an
    administrative           regulation      using          the     rules     of      statutory
    interpretation.          Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶30.                      While
    we     benefit        from   the    analysis       of    the      circuit      court,    the
    interpretation of an administrative regulation is a question of
    law which this court reviews de novo.                         State v. Brown, 
    2006 WI 131
    , ¶18, 
    298 Wis. 2d 37
    , 
    725 N.W.2d 262
    .
    ¶14       We   also   examine    the       circuit      court's      discretionary
    determination as to the applicability of JDF's four equitable
    defenses, which we review under an erroneous exercise of discretion
    standard.        See Johnson v. Cintas Corp. No. 2, 
    2012 WI 31
    , ¶22, 
    339 Wis. 2d 493
    ,          
    811 N.W.2d 756
    .          A     circuit     court      erroneously
    exercises its discretion when it applies an improper legal standard
    or makes a decision not reasonably supported by the facts of
    record.          Id.; State v. McConnohie, 
    113 Wis. 2d 362
    , 371, 
    334 N.W.2d 903
     (1983).
    III.       ANALYSIS
    ¶15       We initially      consider whether,            under Wisconsin law,
    compensation for donning and doffing can be modified or eliminated
    through collective bargaining.                We next address JDF's contention
    that       the   time    spent     donning    and       doffing    was    rendered      non-
    compensable by the de minimis doctrine.                           Finally, we resolve
    All subsequent references to the Wis. Admin. Code ch. DWD
    8
    274 are to the April 2018 register date unless otherwise indicated.
    7
    No.   2018AP1681
    whether the circuit court erred in concluding that 
    Wis. Stat. § 109.03
    (5) barred JDF's four equitable defenses.
    A. An employee's right to compensation for donning and
    doffing personal protective equipment cannot be modified or
    eliminated through collective bargaining.
    ¶16   The main issue presented on appeal is:     under Wisconsin
    law, can compensation for donning and doffing personal protective
    equipment be modified or eliminated through collective bargaining?
    Because time spent donning and doffing comprises "hours worked"
    under Wis. Admin. Code. § DWD 272.12, and the law does not exempt
    donning and doffing from the statutory requirement that employees
    be paid for all hours worked, the answer is no.      Contrary to JDF's
    argument, neither Aguilar v. Husco International, Inc., 
    2015 WI 36
    , 
    361 Wis. 2d 597
    , 
    863 N.W.2d 556
    , nor Hormel Foods Corp., 
    367 Wis. 2d 131
    , indicate otherwise.
    ¶17   DWD is charged with "adopt[ing] reasonable and proper
    rules and regulations" related to wage and labor laws in Wisconsin.
    See 
    Wis. Stat. § 103.005
    (1).           DWD regulations determining an
    employee's hours worked for purposes of compensation are found in
    Wis. Admin. Code § DWD 272.12.   This section requires employees to
    be paid for all time spent in "physical or mental exertion (whether
    burdensome or not) controlled or required by the employer and
    pursued necessarily and primarily for the benefit of the employer's
    business."9   Compensable time is defined as "the time on any
    9 "Administrative rules enacted pursuant to statutory
    rulemaking authority have the force and effect of law in
    Wisconsin." Staples v. DHSS, 
    115 Wis. 2d 363
    , 367, 
    340 N.W.2d 194
    (1983).
    8
    No.     2018AP1681
    particular      workday   at   which    such      employee    commences       their
    principal activity or activities."           § DWD 272.12(1)(a)2.        The term
    "principal   activity"      "includes       all    activities   which     are    an
    integral part of a principal activity."10               § DWD 272.12(2)(e)1.
    ¶18   We    first    address   whether       the   employees'     time   spent
    donning and doffing personal protective equipment at the beginning
    and end of the workday is an integral part of a "principal
    activity" pursuant to Wis. Admin. Code § DWD 272.12(2)(e) and is
    therefore compensable.         In Tyson Foods, the court of appeals
    concluded that donning and doffing personal protective equipment
    within the prepared food industry was an "integral part of a
    principal activity," and therefore compensable.              Weissman v. Tyson
    Prepared Foods, Inc., 
    2013 WI App 109
    , ¶2, 
    350 Wis. 2d 380
    , 
    838 N.W.2d 502
     ("Tyson Foods").         In Hormel Foods Corp., a majority of
    this court adopted the reasoning of Tyson Foods, and concluded
    that donning and doffing protective clothing and equipment at the
    beginning and end of the day11 was compensable because it was an
    10The regulation provides three examples of what "is meant
    by an integral part of a principal activity." Wis. Admin. Code
    § DWD 272.12(2)(e)1. The third example is a chemical plant worker
    who dons and doffs clothing and equipment at the beginning and end
    of his shift. See § DWD 272.12(2)(e)1.c.
    11The parties in Hormel Foods Corp. also stipulated to the
    employees' time spent walking to and from the workstations. The
    lead opinion reasoned that "the time spent walking to or from
    workstations or washing hands occurs after the employees'
    'workday' begins and is thus compensable."       United Food &
    Commercial Workers Union, Local 1473 v. Hormel Foods Corp., 
    2016 WI 13
    , ¶21 n.6, 
    367 Wis. 2d 131
    , 
    876 N.W.2d 99
     (Abrahamson, J.,
    joined by Ann Walsh Bradley, J.).
    9
    No.    2018AP1681
    integral part of the principal activity of food production.12               See
    Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶78 (Abrahamson, J., joined
    by Ann Walsh Bradley, J.) ("[W]e conclude that donning and doffing
    the clothing and equipment at the beginning and end of the day in
    the instant case is 'integral and indispensable' to the employees'
    principal activities of producing food products."); id., ¶108
    (Roggensack, C.J., concurring in part, dissenting in part, joined
    by Prosser, J.) ("While I do not join the lead opinion, I agree
    with its conclusion that donning and doffing of company-required
    clothing and gear at the beginning and end of the workday is 'an
    integral      part   of    a      principal    activity' . . . for        which
    compensation is required." (internal footnotes omitted)).
    ¶19    In this case, the personal protective equipment that the
    employees are required to don and doff is similar to that in Hormel
    Foods Corp. and Tyson Foods, and the activities of the employees
    likewise occur within the food production industry.                  We clarify
    that    the   employees'   time    spent    donning   and   doffing    personal
    protective equipment at the beginning and end of the workday in
    this case is an "integral part of a principal activity," and is
    therefore compensable under Wis. Admin. Code § DWD 272.12(2)(e).13
    The main dispute between the lead opinion and Chief Justice
    12
    Roggensack's concurrence/dissent in Hormel Foods Corp. was whether
    the donning and doffing was compensable when it occurred over the
    lunch hour. See, e.g., Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶109.
    JDF conceded at oral argument that the time employees spent
    13
    donning and doffing was compensable pursuant to Tyson Foods, 
    350 Wis. 2d 380
    , and Hormel Foods Corp., 
    367 Wis. 2d 131
    .
    10
    No.     2018AP1681
    ¶20   We next resolve whether compensation for donning and
    doffing    can   nonetheless   be   modified   or   eliminated    through
    collective bargaining.     The Wisconsin Statutes provide that an
    employer may not contractually avoid its obligation to pay an
    employee for all compensable time.       See 
    Wis. Stat. §§ 109.03
    (1),
    109.03(5); Kieninger v. Crown Equip. Corp., 
    2019 WI 27
    , ¶15 & n.7,
    
    386 Wis. 2d 1
    , 
    924 N.W.2d 172
    .      There is no Wisconsin statute or
    DWD regulation that expressly allows an employer to modify or
    eliminate compensation for donning and doffing personal protective
    equipment. This is in contrast to the federal Fair Labor Standards
    Act (FLSA), which specifically permits collective bargaining over
    compensation for donning and doffing, 
    29 U.S.C. § 203
    (o) (2012).14
    Although Wisconsin's wage law is modeled after the FLSA, there is
    no Wisconsin statute or regulation that is equivalent to § 203(o).
    See Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶76 ("No counterpart to
    
    29 U.S.C. § 203
    (o) exists in Wisconsin law.").
    14Congress amended the Fair Labor Standards Act in 1947 to
    add what is now 
    29 U.S.C. § 203
    (o). That provision provides:
    In determining for the purposes of sections 206 and 207
    of this title the hours for which an employee is
    employed, there shall be excluded any time spent in
    changing clothes or washing at the beginning or end of
    each workday which was excluded from measured working
    time during the week involved by the express terms of or
    by custom or practice under a bona fide collective-
    bargaining agreement applicable to the particular
    employee.
    See Sandifer v. U.S. Steel Corp., 
    571 U.S. 220
    , 226 (2014) (noting
    that § 203(o) "provides that the compensability of time spent
    changing clothes . . . is a subject appropriately committed to
    collective bargaining").
    11
    No.     2018AP1681
    ¶21   JDF maintains that even though there is no express
    exception in Wisconsin law permitting collective bargaining over
    compensation      for   donning   and   doffing,     a     combination    of   two
    footnotes    in    separate   writings       in   Hormel    Foods   Corp.,     
    367 Wis. 2d 131
    , indicates that a majority of the court has stated
    otherwise.    JDF cites to one footnote from the concurrence/dissent
    of Chief Justice Roggensack which states:
    Hormel does not argue that no compensation is due because
    such compensation was bargained away in a collective
    bargaining agreement, which is permitted under state and
    federal law. See Aguilar v. Husco Int'l, Inc., 
    2015 WI 36
    , ¶24, 
    361 Wis. 2d 597
    , 
    863 N.W.2d 556
    ; Wis. Admin.
    Code § DWD 274.05; see also Sandifer v. [U.S.] Steel
    Corp., [571] U.S. [220], 
    134 S. Ct. 870
    , 878-79, 
    187 L.E.2d 729
     (2014).
    See Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶113 n.6 (Roggensack,
    C.J., concurring in part, dissenting in part, joined by Prosser,
    J.).    JDF also cites to a footnote in Justice Gableman's dissent
    which states:
    The Wisconsin Administrative Code allows employees to
    bargain away rights they would otherwise have under the
    Code as long as the parties enter into a [collective
    bargaining agreement] and apply for a waiver or
    otherwise meet the factors required for a waiver. See
    Wis. Admin. Code § DWD 247.05; Aguilar v. Husco Int'l,
    Inc.,   
    2015 WI 36
    ,   ¶11,   
    361 Wis. 2d 597
    ,   
    863 N.W.2d 556
    . . . .
    But, as the concurring/dissenting opinion points out,
    "Hormel does not argue that no compensation is due
    because such compensation was bargained away in a
    collective bargaining agreement, which is permitted
    under state and federal law." Concurrence/Dissent, ¶113
    n.6.
    Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶145 n.3 (Gableman, J.,
    dissenting, joined by Ziegler, J.).
    12
    No.    2018AP1681
    ¶22   For a number of reasons, these two footnotes do not
    provide support for JDF's claim that compensation for donning and
    doffing     can    be   modified    or    eliminated    through     collective
    bargaining.       First and foremost, whether compensation for donning
    and doffing can be modified or eliminated through collective
    bargaining was not at issue in Hormel Foods Corp., 
    367 Wis. 2d 131
    .
    Instead, the court addressed two issues:          (1) whether donning and
    doffing of company-required clothing and equipment was compensable
    time under Wis. Admin. Code § DWD 272.12(2)(e); and (2) even if
    that time was otherwise compensable, whether it was rendered non-
    compensable under the de minimis doctrine.              Hormel Foods Corp.,
    
    367 Wis. 2d 131
    , ¶4.         The issue of whether the parties bargained
    over compensation for donning and doffing was not raised by the
    parties.15 Four Justices' views on an un-briefed issue, contained
    in   separate     writings   that   include   those    dissenting    from   the
    judgment, cannot signify a majority of this court.                See State v.
    Griep, 
    2015 WI 40
    , ¶37 n.16, 
    361 Wis. 2d 657
    , 
    863 N.W.2d 567
    ("Under Marks, the positions of the justices who dissented from
    the judgment are not counted in examining the divided opinions for
    holdings.") (citing Marks v. United States, 
    430 U.S. 188
    , 193
    (1977)); see also State v. Coffee, 
    2020 WI 1
    , ¶70 n.1, 
    389 Wis. 2d 627
    , 
    937 N.W.2d 579
     (Ann Walsh Bradley, J., dissenting)
    ("Although the vitality of Griep has been called into question,
    currently it remains in force.").
    JDF critiques the lead opinion in Hormel Foods Corp., 367
    
    15 Wis. 2d 131
    , for not addressing the issue, while simultaneously
    acknowledging that the issue was not raised by the parties.
    13
    No.   2018AP1681
    ¶23    Additionally, these two footnotes rely upon Aguilar, 
    361 Wis. 2d 597
    , federal law, and Wis. Admin. Code § DWD 274.05 as
    support.    As we will illustrate, § DWD 274.05 and federal law do
    not apply to this case,16 and Aguilar is distinguishable.
    ¶24    Wisconsin Admin. Code § DWD 274.05 is the sole basis for
    obtaining    a   waiver   or   modification     of     Wisconsin     wage    law
    requirements pursuant to a collective bargaining agreement.                   It
    provides:
    Except   as   provided  in [§] DWD   274.08,   where   a
    collectively bargained agreement exists, the department
    may consider the written application of labor and
    management for a waiver or modification to the
    requirements of this chapter based upon practical
    difficulties or unnecessary hardship in complying
    therewith.   If the department determines that in the
    circumstances existing compliance with this chapter is
    unjust or unreasonable and that granting such waiver or
    modification will not be dangerous or prejudicial to the
    life, health, safety or welfare of the employees, the
    department may grant such waiver or modification as may
    be appropriate to the case.
    (Emphasis added.)
    ¶25    We rely on the same rules of construction to interpret
    Wis. Admin. Code § DWD 274.05 that we apply to interpret a statute.
    See Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶30 ("When interpreting
    administrative     regulations   the    court   uses    the   same   rules   of
    interpretation as it applies to statutes."); Orion Flight Servs.,
    Inc. v. Basler Flight Serv., 
    2006 WI 51
    , ¶18, 
    290 Wis. 2d 421
    , 
    714 N.W.2d 130
       ("Interpretations      of   code    provisions,     and     the
    16JDF concedes that it does not prevail if Wis. Admin. Code
    § DWD 274.05 does not apply to this case.
    14
    No.   2018AP1681
    determination as to whether the provision in question is consistent
    with the applicable statute, are subject to principles of statutory
    construction.").     We first look to the plain language of § DWD
    274.05 to determine its meaning.           Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶31.    We further consider the context of the regulation and
    the case law interpreting it.        
    Id.
    ¶26   By its express terms, Wis. Admin. Code § DWD 274.05 is
    limited to "a waiver or modification to the requirements of this
    chapter . . . ," that is, ch. DWD 274 (emphasis added).                      The
    requirement that an employee be compensated for donning and doffing
    is governed by Wis. Admin. Code § DWD 272.12(2)(e), which is found
    in a different chapter, ch. DWD 272.          The plain language of § DWD
    274.05 therefore does not support JDF's argument that the employees
    waived their right to compensation for donning and doffing, as
    mandated by § DWD 272.12(2)(e).
    ¶27   JDF's argument also fails when Wis. Admin. Code § DWD
    274.05 is considered in the context of surrounding regulations.
    "As with statutory interpretation, we interpret the language of
    a regulation in the context in which it is used, 'not in isolation
    but as part of a whole; in relation to the language of surrounding
    or closely-related [regulations]; and reasonably, [so as] to avoid
    absurd or unreasonable results.'"            Williams v. Integrated Cmty.
    Servs., Inc., 
    2007 WI App 159
    , ¶12, 
    303 Wis. 2d 697
    , 
    736 N.W.2d 226
       (quoting   State   ex   rel.   Kalal    v.   Circuit    Court   for   Dane
    Cty., 
    2004 WI 58
    , ¶46, 
    271 Wis. 2d 633
    , 
    681 N.W.2d 110
    ).
    ¶28   Wisconsin    Admin.   Code     § DWD   274.045,    a   surrounding
    regulation to § DWD 274.05, explicitly incorporates Wis. Admin.
    15
    No.   2018AP1681
    Code § DWD 272.12.   Section DWD 274.045, entitled "Interpretation
    of hours worked," states that:   "[t]he provisions of s. DWD 272.12
    apply to the interpretation of hours worked under this chapter."
    The text makes clear that provisions of § DWD 272.12 apply when
    calculating "hours worked" under ch. DWD 274.   Conversely, Section
    DWD 274.05, entitled "Waiver or modification," does not explicitly
    incorporate provisions from § DWD 272.12 with language similar to
    § DWD 274.045, such as:   "[t]he provisions of s. DWD 272.12 apply
    to a waiver or modification under this chapter."   DWD knew how to
    incorporate provisions from another chapter into regulations in
    ch. DWD 274, yet it did not do so in § DWD 274.05.   See Lake City
    Corp. v. City of Mequon, 
    207 Wis. 2d 155
    , 171, 
    558 N.W.2d 100
    (1997) ("It is clear that the legislature knew how to accomplish
    this goal [of qualifying the language of the statute], since it
    included similar qualifying language in this very same statute.").
    We therefore decline JDF's request to disregard the express textual
    limitation of "this chapter" included in § DWD 274.05.17
    ¶29   We further observe that 
    29 U.S.C. § 203
    (o), the "federal
    law" referred to in the Hormel Foods Corp. footnotes, is not
    17There are no cases where Wis. Admin. Code § DWD 274.05 has
    been applied outside of ch. DWD 274.
    Even if § DWD 274.05 applied, it is undisputed that neither
    JDF nor the Union requested a waiver from DWD of JDF's obligations
    to compensate the employees for donning and doffing.
    Additionally, we observe that a waiver pursuant to § DWD
    274.05 is allowed only when DWD has determined that granting a
    waiver or modification "will not be dangerous or prejudicial to
    the life, health, safety or welfare of the employees . . . ."
    16
    No.     2018AP1681
    dispositive because "[n]o counterpart to 
    29 U.S.C. § 203
    (o) exists
    in Wisconsin law."       Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶76.             As
    discussed    above,      Wisconsin    law,   unlike      § 203(o),     does   not
    expressly allow modification or elimination of compensation for
    donning and doffing through collective bargaining.                   The Seventh
    Circuit    has    rejected   the     contention   that    "§ 203(o)     preempts
    [Wisconsin] law that lacks an equivalent exception."                  Spoerle v.
    Kraft Foods Glob., Inc., 
    614 F.3d 427
    , 428 (7th Cir. 2010).
    ¶30    Finally, the citation to Aguilar in the Hormel Foods
    Corp. footnotes does not support JDF's assertion that compensation
    for donning and doffing can be modified or eliminated through
    collective bargaining.       In Aguilar, a union filed a complaint with
    DWD alleging that Husco owed back pay to its employees for 20-
    minute meal breaks, which had been uncompensated pursuant to a
    provision    in    the    parties'     collective     bargaining      agreement.
    Aguilar, 
    361 Wis. 2d 597
    , ¶1. The union argued that the collective
    bargaining agreement was in conflict with Wis. Admin. Code § DWD
    274.02, which required employers to pay employees for meal breaks
    that were shorter than 30 minutes.18          Id.     DWD disagreed with the
    union because it determined that, although the 20–minute unpaid
    breaks technically violated § DWD 274.02, "the factors favoring a
    waiver [pursuant to Wis. Admin. Code § DWD 274.05] were present in
    this case (specifically, that the parties to the [collective
    18The Aguilar court noted that although Wis. Admin. Code
    § DWD 274.05 allows employers and unions with a collective
    bargaining agreement to request a waiver, no such request was made.
    Aguilar v. Husco Int'l, Inc., 
    2015 WI 36
    , ¶2 & n.2, 
    361 Wis. 2d 597
    , 
    863 N.W.2d 556
    .
    17
    No.    2018AP1681
    bargaining agreement] had agreed to the provision and that there
    was no evidence that the shorter meal breaks jeopardized the life,
    health,      safety     or    welfare   of   employees)."        Aguilar,      
    361 Wis. 2d 597
    , ¶3.        This court upheld DWD's interpretation of § DWD
    274.02 and its decision not to seek recovery of back pay since it
    was "reasonable and consistent with the purpose of the regulation."
    Aguilar, 
    361 Wis. 2d 597
    , ¶7.
    ¶31    Aguilar    is    distinguishable   from     this   case    in    two
    important respects.          First, Aguilar involved collective bargaining
    for meal breaks, which are regulated by Wis. Admin. Code § DWD
    274.02.      Unlike the section regulating donning and doffing, which
    is found in Wis. Admin. Code ch. DWD 272, the section regulating
    meal breaks is found within Wis. Admin. Code ch. DWD 274 and
    therefore fits explicitly within the language of Wis. Admin. Code
    § DWD 274.05 allowing for waiver of collective bargaining within
    "this chapter."
    ¶32    Second, although in Aguilar there was no formal request
    for a waiver under Wis. Admin. Code § DWD 274.05, see Aguilar, 
    361 Wis. 2d 597
    , ¶2, the unpaid meal breaks were expressly agreed upon
    and written into the collective bargaining agreement between the
    parties.      Here, it is undisputed that there was nothing written
    into    the    collective       bargaining    agreement     indicating        that
    compensation for donning and doffing was bargained over. Discovery
    has been completed and, as JDF concedes, there is nothing in the
    record that directly ties the Union's withdrawal of the proposal
    for compensated donning and doffing time                in exchange for an
    increase in employees' base wages.             Aguilar falls far short of
    18
    No.    2018AP1681
    supporting JDF's argument that if an employee brings an unpaid
    wage claim for donning and doffing under Wis. Admin. Code § DWD
    272.12, it is subject to the waiver provision in § DWD 274.05.
    ¶33   Ultimately, the two footnotes that JDF relies upon from
    Hormel Foods Corp. do not provide support for JDF's claim that
    compensation for donning and doffing can be modified or eliminated
    through collective bargaining.         We reject JDF's attempt to ignore
    the plain language of Wis. Admin. Code § DWD 274.05 and transform
    four Justices' views on an un-briefed issue, contained in separate
    writings that include those dissenting from the judgment, into a
    bargaining right under state law that is commensurate with 
    29 U.S.C. § 203
    (o).
    ¶34   We conclude that under Wisconsin law, compensation for
    donning and doffing cannot be modified or eliminated through
    collective bargaining.         We therefore affirm the circuit court's
    denial of summary judgment on this issue.
    B. The time employees spent donning and
    doffing was not de minimis.
    ¶35   In   the    alternative,    JDF    asserts    that    the    donning
    and doffing      time    was   rendered     non-compensable        because     of
    the doctrine of de minimis non curat lex, which means "the law does
    not   govern trifles."         "De   minimis   non   curat    lex,"      Merriam
    Webster Online          Dictionary      (2020),          https://www.merriam-
    webster.com/dictionary/de%20minimis%20non%20curat%20lex.                  The de
    minimis doctrine "'permits employers to disregard . . . otherwise
    compensable work '[w]hen the matter in issue concerns only a few
    seconds or minutes of work beyond the scheduled working hours.''"
    19
    No.   2018AP1681
    Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶97 (quoted source omitted).
    The United States Supreme Court has reasoned that a few seconds or
    minutes may be dismissed as de minimis because such "[s]plit-
    second absurdities are not justified by the actualities of working
    conditions or by the policy of the Fair Labor Standards Act."
    Anderson v. Mt. Clemens Pottery Co., 
    328 U.S. 680
    , 692 (1946),
    superseded by statute as noted in Integrity Staffing Sols., Inc.
    v. Busk, 
    574 U.S. 27
     (2014).    "The de minimis rule is concerned
    with the practical administrative difficulty of recording small
    amounts of time for payroll purposes."   Lindow v. United States,
    
    738 F.2d 1057
    , 1062 (9th Cir. 1984).       In determining whether
    otherwise compensable time is de minimis, courts have considered
    the practical difficulty of recording the additional time, the
    size of the aggregate claim, and whether the work was performed on
    a daily basis.    
    Id.
     at 1062-63 (citing national cases for this
    proposition).
    ¶36   In Hormel Foods Corp., Justice Abrahamson's opinion and
    Chief Justice Roggensack's partial concurrence both concluded that
    the de minimis doctrine did not bar compensation for stipulated
    time spent donning and doffing at the beginning and end of the
    work day because it was "not a 'trifle'" and amounted to over $500
    a year per employee.    Hormel Foods Corp., 
    367 Wis. 2d 131
    , ¶105
    (Abrahamson, J., joined by Ann Walsh Bradley, J.); id., ¶137,
    (Roggensack, C.J., concurring in part, dissenting in part, joined
    by Prosser, J.) ("I conclude that . . . the de minimis rule does
    not apply to preclude compensation for 5.7 minutes per day for
    each food preparation employee who dons whites and required gear
    20
    No.    2018AP1681
    at   the    start   of   the    workday    and   doffs   them   at    the    day's
    conclusion.").           Justice    Abrahamson's     opinion    acknowledged,
    however, that "[a]lthough the de minimis non curat lex doctrine is
    an established feature of the Federal Fair Labor Standards Act, no
    Wisconsin     cases,     statutes,    or    regulations     state     that    the
    de minimis doctrine applies to Wisconsin DWD regulations or in
    employment disputes."          Id., ¶99 (footnote omitted).
    ¶37    In this case, the parties stipulated that the total time
    employees spent donning and doffing was 4.3 minutes per day and
    that the amount of time the employees spent walking to and from
    their workstations was up to 4.33 minutes per day.               As a result,
    we need not be a "time-study professional" to determine the amount
    of time at issue.        See id., ¶104.      The average amount of damages
    sought per employee is approximately $675 per year, for five
    years.19    This amount is not a "trifle"; viewed in the aggregate
    it is a significant amount of compensation for tasks that the
    employees completed daily.
    ¶38    We assume without deciding that the de minimis doctrine
    applies to claims arising under Wis. Admin. Code § DWD 272.12, and
    conclude that the time spent donning and doffing here was not de
    minimis. We therefore affirm the circuit court's denial of summary
    judgment on this issue.
    C.   JDF's equitable defenses are not barred by
    
    Wis. Stat. § 109.03
    (5).
    The time employees spent walking to and from the various
    19
    departments and work areas was included in this calculation.
    21
    No.   2018AP1681
    ¶39   JDF   raised   several        "alternative   and     affirmative
    defenses" in its answer to the employees' complaint.            JDF asserts
    that since 1994 there has been an agreement that the Union, as the
    authorized representative of the employees, would withdraw its
    request for compensation for donning and doffing in return for JDF
    increasing the employees' base wages.20          According to JDF, the
    employees are now "double dipping" by seeking reimbursement for
    compensation they have previously collectively bargained not to
    receive.
    ¶40   On summary judgment, JDF raised four equitable defenses:
    promissory estoppel, waiver, laches, and unjust enrichment.               The
    circuit court summarily rejected JDF's equitable defenses without
    analyzing their merits.    As support, the circuit court cited to
    20In support, JDF points to two of the uncontested facts in
    the record on summary judgment:
    77. During the back and forth of the labor contract
    negotiations, when the Union would withdraw one of its
    economic proposals it did so with the expectation that
    it was creating an incentive for the Company to make
    some positive movement in increasing its economic offer.
    102. The Company would not have been           willing to
    agree to give the same level of wage rate          increase in
    2009 if the Union insisted and prevailed on        the Company
    to pay an extra amount for donning/doffing         and related
    walking time.
    However, it is undisputed that proposals can be withdrawn for
    a multitude of reasons. As the employees assert, throughout the
    parties' long bargaining history there have been hundreds or
    thousands of proposals that were withdrawn during the course of
    bargaining. JDF admitted at oral argument that there was nothing
    in the record that explicitly tied the increase in the employees'
    base wage to the Union's withdrawal of its proposal for compensated
    donning and doffing time.
    22
    No.     2018AP1681
    
    Wis. Stat. § 109.03
    (5),21 which it concluded "prevented clauses in
    contracts from precluding the right to court access."           The circuit
    court viewed the four equitable defenses as contravening this
    "strong statement of broad public policy supporting access to
    courts."
    ¶41    We    review   the      circuit    court's     discretionary
    determination    to   dismiss    JDF's   equitable   defenses    using     an
    erroneous exercise of discretion standard.            See Johnson, 
    339 Wis. 2d 493
    , ¶22.      A circuit court erroneously exercises its
    discretion when it applies an improper legal standard or makes a
    decision not reasonably supported by the facts of record.                Id.;
    McConnohie, 
    113 Wis. 2d at 371
    .
    ¶42    The circuit court incorrectly concluded that the mere
    existence of a statutory cause of action bars equitable defenses.
    Wisconsin Stat. § 109.03(5) is a vehicle for employees to assert
    their right to unpaid wages in state court.          See, e.g., Aguilar,
    21   Wisconsin Stat. § 109.03(5) states:
    Except as provided in sub. (1), no employer may by
    special contract with employees or by any other means
    secure exemption from this section. Each employee shall
    have a right of action against any employer for the full
    amount of the employee's wages due on each regular pay
    day as provided in this section and for increased wages
    as provided in [§] 109.11(2), in any court of competent
    jurisdiction. An employee may bring an action against
    an employer under this subsection without first filing
    a wage claim with the department under [§] 109.09(1).
    An employee who brings an action against an employer
    under this subsection shall have a lien upon all property
    of the employer, real or personal, located in this state
    as described in [§] 109.09(2).
    23
    No.   2018AP1681
    
    361 Wis. 2d 597
    , ¶12 ("The plaintiffs then brought suit in state
    court pursuant to 
    Wis. Stat. § 109.03
    (5), which authorizes such
    claims . . . .");        Hubbard    v.    Messer,     
    2003 WI 145
    ,   ¶10,   
    267 Wis. 2d 92
    , 
    673 N.W.2d 676
     ("Wisconsin Stat. § 109.03(5) grants
    employees a right of action against employers for all unpaid wages
    due to the employee.").        Principles of equity, on the other hand,
    are   not   bound   by    statute    and       a   determination   as    to   their
    applicability is within a circuit court's discretion.                See Culbert
    v. Ciresi, 
    2003 WI App 158
    , ¶16, 
    266 Wis. 2d 189
    , 
    667 N.W.2d 825
    ("Whether to apply estoppel to preclude a party from raising a
    defense is within the trial court's discretion."); see also Prince
    v. Bryant, 
    87 Wis. 2d 662
    , 674, 
    275 N.W.2d 676
     (1979) (emphasizing
    that a circuit court has the power to apply an equitable remedy as
    necessary to meet the needs of a case).
    ¶43   We conclude that the circuit court applied an improper
    legal standard when it determined that 
    Wis. Stat. § 109.03
    (5),
    which outlines the right of an employee to bring a wage claim,
    acted as a complete bar to JDF's equitable defenses.                We therefore
    remand the case to the circuit court for full consideration of
    each of the equitable defenses and a determination as to whether
    any of these defenses preclude the employees' recovery of damages.
    IV.       CONCLUSION
    ¶44   We conclude that under Wisconsin law, compensation for
    donning and doffing cannot be modified or eliminated through
    collective bargaining.         We assume without deciding that the de
    minimis doctrine applies to claims arising under Wis. Admin. Code
    § DWD 272.12, and conclude that the time the employees spent
    24
    No.   2018AP1681
    donning and doffing was not de minimis.   Finally, we conclude that
    the circuit court erroneously exercised its discretion and the
    case should be remanded for full consideration of JDF's four
    equitable defenses.   We therefore affirm in part, reverse in part,
    and remand the case to the circuit court.
    By the Court.—The decision of the circuit court is affirmed
    in part, reversed in part, and cause remanded.
    25
    No.   2018AP1681.akz
    ¶45     ANNETTE KINGSLAND ZIEGLER, J.                 (dissenting).          I write
    separately      because     the    majority      errs    when     it    concludes      that
    compensable donning and doffing time is not subject to collective
    bargaining.        It is.    The majority concludes otherwise because it
    gives     short-shrift      to    clearly       contrary      statements       from    four
    justices of this court, and ignores the plain language of the
    Wisconsin       Administrative      Code    ("the       Code").         I    respectfully
    dissent.
    ¶46     I conclude that compensation for donning and doffing is
    subject    to    collective       bargaining      and    may    be     bargained      away,
    modified, or waived under Wis. Admin. Code § DWD 274.05 (April
    2018).1     I also conclude that there is an issue of material fact
    regarding       whether     compensation        for     donning      and     doffing    was
    actually bargained away in this case.                    Finally, I conclude that
    the de minimis doctrine applies in Wisconsin.                        I take issue with
    the majority's failure to answer the important question whether
    the de minimis doctrine applies and the majority's failure to
    provide guidance regarding equitable defenses.                          Accordingly, I
    would     remand    to    the     circuit   court       for     further       proceedings
    consistent with this opinion.
    ¶47     While I disagree with the majority's conclusions, the
    majority aptly summarizes the relevant and undisputed facts of
    this case.       I will not separately summarize the facts.                       Rather,
    this writing assumes the reader's familiarity with the relevant
    facts and will reference them as needed.
    1 All subsequent references to the Wisconsin Administrative
    Code ch. DWD 274 are to the April 2018 register date unless
    otherwise indicated.
    1
    No.   2018AP1681.akz
    I.     STANDARD OF REVIEW
    ¶48      "This court applies the same summary judgment standards
    as the circuit court, pursuant to 
    Wis. Stat. § 802.08
    (2) and Bell
    v. County of Milwaukee, 
    134 Wis. 2d 25
    , 30, 
    396 N.W.2d 328
     (1986).
    Summary judgment is appropriate when there are no issues of
    material fact and only a question of law is presented.                       Id."
    Aguilar v. Husco Int'l., Inc., 
    2015 WI 36
    , ¶17, 
    361 Wis. 2d 597
    ,
    
    863 N.W.2d 556
    .
    ¶49      In order to determine whether compensation for donning
    and doffing was subject to collective bargaining in this case, we
    must interpret the language of the Wisconsin Administrative Code
    and then apply that language to the facts of this case.                      "The
    interpretation and application of a statute present questions of
    law that this court reviews de novo while benefiting from the
    analyses of the court of appeals and circuit court."                    State v.
    Alger, 
    2015 WI 3
    , ¶21, 
    360 Wis. 2d 193
    , 
    858 N.W.2d 346
     (citing
    State    v.    Ziegler,    
    2012 WI 73
    ,   ¶37,   
    342 Wis. 2d 256
    ,     
    816 N.W.2d 238
    ).      "When interpreting administrative regulations the
    court uses the same rules of interpretation as it applies to
    statutes."      United Food & Commercial Workers Union, Local 1473 v.
    Hormel   Foods    Corp.,    
    2016 WI 13
    ,   ¶30,   
    367 Wis. 2d 131
    ,     
    876 N.W.2d 99
    .     Accordingly, the interpretation and application of the
    administrative code is a question of law we review de novo using
    traditional tools of interpretation.
    ¶50      "We begin our analysis with the language of the relevant
    [administrative regulation].            State ex rel. Kalal v. Circuit Court
    for Dane Cty., 
    2004 WI 58
    , ¶45, 
    271 Wis. 2d 633
    , 
    681 N.W.2d 110
    .
    2
    No.    2018AP1681.akz
    The purpose of [our] interpretation is to give the [regulation]
    'its full, proper, and intended effect.'             Id., ¶44.       If the
    [regulation's] language is plain, we end the inquiry and give the
    language its 'common, ordinary, and accepted meaning, except [we
    give] technical or specially-defined words or phrases . . . their
    technical or special definitional meaning.'         Id., ¶45."     State v.
    Lopez, 
    2019 WI 101
    , ¶10, 
    389 Wis. 2d 156
    , 
    936 N.W.2d 125
    .              "This
    court also analyzes the context and structure of a [regulation] to
    determine its meaning.    [Regulation] language 'is interpreted in
    the context in which it is used; not in isolation but as part of
    a whole; in relation to the language of surrounding or closely-
    related [regulations] . . . .' [Kalal, 
    271 Wis. 2d 633
    , ¶46].             'A
    [regulation's] purpose or scope may be readily apparent from its
    plain language or its relationship to surrounding or closely-
    related [regulations]——that is, from its context or the structure
    of the [regulation] as a coherent whole.'         Id., ¶49."     Lopez, 
    389 Wis. 2d 156
    , ¶11.
    II.    ANALYSIS
    A.    JDF Conceded That Its Employees' Donning
    And Doffing Is Compensable.
    ¶51   Under the Wisconsin Administrative Code, employees are
    entitled   to   compensation    for    certain   activities.      Generally
    speaking, under Wis. Admin. Code § DWD 272.12(1)(a) (May 2019)2:
    1. Employees subject to the statutes must be paid
    for all time spent in "physical or mental exertion
    2 All subsequent references to the Wisconsin Administrative
    Code ch. DWD 272 are to the May 2019 register date unless otherwise
    indicated.
    3
    No.    2018AP1681.akz
    (whether burdensome or not) controlled or required by
    the employer and pursued necessarily and primarily for
    the benefit of the employer's business." The workweek
    ordinarily includes "all time during which an employee
    is necessarily required to be on the employer's
    premises, on duty or at a prescribed work place."
    2. "Workday," in general, means the period between
    "the time on any particular workday at which such
    employee   commences   their   principal   activity   or
    activities" and "the time on any particular workday at
    which they cease such principal activity or activities."
    The "workday" may thus be longer than the employee's
    scheduled shift, hours, tour of duty, or time on the
    production line. Also, its duration may vary from day to
    day depending upon when the employee commences or ceases
    their "principal" activities.
    § DWD 272.12(1)(a)1.-2. (emphases added).
    ¶52   Employees' daily preparatory and concluding activities
    are not always compensable as "workday" "principal activities."
    Wis.   Admin.   Code    § DWD   272.12(2)(e).     Rather,      they   may   be
    categorized as non-compensable "preliminary" and "postliminary"
    activities.      § DWD      272.12(2)(e)1.c.     Compensable     "principal
    activities" include only "activities which are an integral part of
    a principal activity."          § DWD 272.12(2)(e)1.     An activity is
    "integral" if it is "closely related" and "indispensable" to
    performance     of     an   employee's    principal   activity.         § DWD
    272.12(2)(e)1.c.       For example:
    If an employee in a chemical plant . . . cannot perform
    their principal activities without putting on certain
    clothes, changing clothes on the employer's premises at
    the beginning and end of the workday would be an integral
    part of the employee's principal activity. On the other
    hand, if changing clothes is merely a convenience to the
    employee and not directly related to their principal
    activities, it would be considered as a "preliminary" or
    "postliminary" activity rather than a principal part of
    the activity. However, activities such as checking in
    and out and waiting in line to do so would not ordinarily
    4
    No.    2018AP1681.akz
    be regarded as integral parts of the principal activity
    or activities.
    Id. (emphases added).
    ¶53   Accordingly, changing clothes or donning and doffing
    protective gear requires compensation only if it is "integral" to
    an employee's principal activity——only if it is "closely related"
    and "indispensable" to the employee's principal activity——but not
    if it is "merely a convenience."
    ¶54   In this case, JDF requires its employees to don and doff
    "safety footwear, frocks, hairnets, aprons, ear plugs, and plastic
    bump caps" "at the beginning and end of their shifts."              Majority
    op., ¶4.   As the majority notes, "JDF conceded at oral argument
    that the time employees spent donning and doffing was compensable"
    under Hormel Foods Corp. and Weissman v. Tyson Prepared Foods.
    Majority   op.,    ¶19   n.13.   See    also   Hormel   Foods    Corp.,   
    367 Wis. 2d 131
    ; Weissman v. Tyson Prepared Foods, Inc., 
    2013 WI App 109
    , 
    350 Wis. 2d 380
    , 
    838 N.W.2d 502
    . In light of that concession,
    I assume without deciding that the donning and doffing at issue in
    this case is integral to JDF's employees' principal activity.
    B.     Compensable Donning And Doffing Is
    Subject To Collective Bargaining.
    ¶55   Four justices on this court have previously answered the
    question whether compensation for donning and doffing may be
    bargained away under Wisconsin law with a resounding "Yes" in
    Hormel Foods Corp.        In that case, Hormel did not argue that
    compensation for donning and doffing had in fact been bargained
    away in a collective bargaining agreement ("CBA"), but it was clear
    5
    No.   2018AP1681.akz
    that it could have been.    See Hormel Foods Corp., 
    367 Wis. 2d 131
    .
    Chief Justice Roggensack wrote:
    Hormel does not argue that no compensation [for
    donning and doffing] is due because such compensation
    was bargained away in a collective bargaining agreement,
    which is permitted under state and federal law. See
    Aguilar v. Husco Int'l, Inc., 
    2015 WI 36
    , ¶24, 
    361 Wis. 2d 597
    , 
    863 N.W.2d 556
    ; Wis. Admin. Code § DWD 274.05;
    see also Sandifer v. United States Steel Corp., [
    571 U.S. 220
     (2014)].
    
    Id.,
     ¶113 n.6 (Roggensack, C.J. concurring/dissenting, joined by
    Prosser, J.).   And Justice Gableman wrote:
    The Wisconsin Administrative Code allows employees
    to bargain away rights they would otherwise have under
    the Code as long as the parties enter into a CBA
    agreement and apply for a waiver or otherwise meet the
    factors required for a waiver.    See Wis. Admin. Code
    § DWD [274.05]; Aguilar v. Husco Int'l, Inc., [
    362 Wis. 2d 597
    , ¶11].
    
    Id.,
     ¶145 n.3 (Gableman, J. dissenting, joined by Ziegler, J.).
    This four-justice conclusion that compensation for donning and
    doffing may be bargained away is correct and consistent with the
    plain language of the Wisconsin Administrative Code and this
    court's prior decision in Aguilar.     Here is why.
    ¶56   First, the plain language of Wis. Admin. Code § DWD
    274.05 permits compensation for donning and doffing to be bargained
    away, waived, or modified.     The employees argue that compensation
    for donning and doffing is not subject to collective bargaining
    because compensation for donning and doffing is regulated under
    chapter 272 of the Code, and not chapter 274 (meaning § DWD 274.05
    does not apply to it).     The majority agrees.   Majority op., ¶¶28,
    34.   But, as counsel for JDF explained at oral argument, this
    6
    No.   2018AP1681.akz
    interpretation is incorrect.        It is not true that chapters 272 and
    274 are "two silos" "and never the two shall meet."
    ¶57   Wisconsin Admin. Code § DWD 274.05 allows for the waiver
    or modification of compensation based on collective bargaining
    agreements.      It says:
    Except as provided in s. DWD 274.08, where a collectively
    bargained agreement exists, the department may consider
    the written application of labor and management for a
    waiver or modification to the requirements of this
    chapter based upon practical difficulties or unnecessary
    hardship in complying therewith.      If the department
    determines that in the circumstances existing compliance
    with this chapter is unjust or unreasonable and that
    granting such waiver or modification will not be
    dangerous or prejudicial to the life, health, safety or
    welfare of the employees, the department may grant such
    waiver or modification as may be appropriate to the case.
    § DWD 274.05 (emphases added).              The employees and the majority
    focus on the "of this chapter" language but fail to appreciate
    what that language actually means.                 Immediately prior to § DWD
    274.05, in Wis. Admin. Code § DWD 274.045, the plain language "of
    this   chapter"——chapter      274——incorporates           "[t]he    provisions     of
    s. DWD 272.12."          § DWD 274.045.       It says, "The provisions of
    s. DWD 272.12 apply to the interpretation of hours worked under
    this chapter."     Id. (emphasis added).
    ¶58   The majority misunderstands the significance of this
    incorporation by reference.         The majority concludes that since
    Wis.    Admin.    Code    § DWD   274.045         explicitly      incorporates     by
    reference Wis. Admin. Code § DWD 272.12, and § DWD 274.05 does
    not, the donning and doffing at issue in this case is not subject
    to collective bargaining agreements under § DWD 274.05.                           The
    majority's     conclusion     ignores       the    fact    that     § DWD    274.045
    7
    No.   2018AP1681.akz
    incorporates § DWD 272.12 for "the interpretation of hours worked
    under this chapter"——all of chapter 274——not just § DWD 274.045.
    § DWD 274.045 (emphasis added).
    ¶59   Accordingly,   chapter    274     explicitly   incorporates     by
    reference Wis. Admin. Code § DWD 272.12, which defines "hours
    worked" for compensation purposes.          Thus, if and when donning and
    doffing is compensable under § DWD 272.12, that compensation is
    subject to collective bargaining and waiver or modification under
    Wis. Admin. Code § DWD 274.05.        As noted above, JDF conceded that
    the donning and doffing at issue in this case is compensable under
    § DWD 272.12.    Accordingly, it was clearly subject to collective
    bargaining and waiver or modification under § DWD 274.05.
    ¶60   Neither party in this case actually applied for a waiver
    or modification of compensation for donning and doffing under Wis.
    Admin.   Code   § DWD   272.12.     But   a   formal   application    to    the
    Department of Workforce Development is not always necessary.               Wis.
    Admin. Code § DWD 274.05 says:
    If the department determines that in the circumstances
    existing compliance with this chapter is unjust or
    unreasonable   and   that   granting  such   waiver   or
    modification will not be dangerous or prejudicial to the
    life, health, safety or welfare of the employees, the
    department may grant such waiver or modification as may
    be appropriate to the case.
    Id.   Thus, the right to compensation may be bargained away "as
    long as the parties enter into a CBA agreement and apply for a
    waiver or otherwise meet the factors required for a waiver.                See
    Wis. Admin. Code § DWD [274.05]; Aguilar v. Husco Int'l, Inc.,
    [
    362 Wis. 2d 597
    , ¶11]."          Hormel Foods Corp., 
    367 Wis. 2d 131
    ,
    ¶145 n.3 (Gableman, J. dissenting, joined by Ziegler, J.) (emphases
    8
    No.   2018AP1681.akz
    added).      Under the plain language of the Code, the right to
    compensation may be bargained away if (1) there is a CBA, and (2)
    the § DWD 274.05 factors are met. And either the DWD or a reviewing
    court may determine whether the § DWD 274.05 factors are met.        We
    came to a similar conclusion in Aguilar.
    ¶61   In that case, a union and Husco International, Inc.
    agreed in a CBA that employee meal breaks less than 30 minutes
    would not be compensated.     Aguilar, 
    361 Wis. 2d 597
    , ¶9.    The CBA
    was contrary to Wis. Admin. Code        § DWD 274.02 (2006), which
    required compensation for meal breaks less than 30 minutes.        Id.,
    ¶¶22-23.     Later, as in this case, the union came back and asserted
    "that Husco was required to pay employees for the unpaid breaks
    notwithstanding the CBA."       Id., ¶10.   The union then filed a
    complaint with the DWD.     But "the DWD notified the union that the
    DWD would not seek back pay" of the meal break compensation.       Id.,
    ¶11.    The initial decision stated:
    "It is not disputed that the parties failed to request
    a waiver from the department under DWD 274.05. However,
    that is a technical violation of the code." After noting
    that there was no reason to think that the agreement
    "jeopardized the life, health, safety or welfare" of the
    employees and that the meal-break length had been a part
    of "the give and take of collective bargaining," the
    decision concluded, "Based on [DWD] review of this
    matter, the factors required to approve a waiver or
    modification of DWD 272.02 are present in the facts of
    this case."
    Id., ¶26 (emphasis added).        We upheld this determination as
    reasonable and consistent with the purpose of the regulation. Id.,
    ¶¶36-37.
    ¶62   Accordingly, the failure to request a waiver from the
    DWD is a mere technical violation.     A party may still argue to the
    9
    No.    2018AP1681.akz
    DWD or a reviewing court that the right to compensation was
    bargained away, modified, or waived because (1) there is a CBA,
    and (2) the § DWD 274.05 factors are met.          See Wis. Admin. Code
    § DWD 274.05; Aguilar, 
    361 Wis. 2d 597
    , ¶¶26, 36-37.
    ¶63    The facts of Aguilar are similar to those of this case.
    Here,   the   Union   and   JDF's   negotiations     during    collective
    bargaining involved discussions of compensation for donning and
    doffing.    And now, despite their CBAs, the employees seek back pay
    for uncompensated donning and doffing. Also as in Aguilar, neither
    party filed an application for a waiver with the DWD.                Under
    Aguilar, it is clear that the compensation for donning and doffing
    in this case still could have been bargained away.             It is also
    clear that compensation for donning and doffing was bargained away
    if (1) there was a CBA which bargained away compensation for
    donning and doffing, and (2) the § DWD 274.05 factors were met.
    What is less clear is whether the first prong is satisfied——whether
    the employees' right to compensation for donning and doffing was,
    in fact, bargained away.
    C. There Is An Issue Of Material Fact Regarding
    Whether Compensation For Donning And Doffing
    Was In Fact Bargained Away.
    ¶64    It is undisputed that the Union requested compensation
    for donning and doffing during collective bargaining negotiations
    in 1994, 1997, 2000, 2004, and 2009.        Majority op., ¶¶5-6.      It is
    also undisputed that, at some point during each negotiation, the
    Union withdrew its request.     Id.      And it is undisputed that each
    collective bargaining negotiation resulted in increased base wages
    10
    No.   2018AP1681.akz
    for JDF employees. Id. Finally, JDF's Statement of Facts included
    two undisputed assertions relevant to the negotiations:
    77.   [In 2004,] [d]uring the back and forth of the
    labor contract negotiations, when the Union would
    withdraw one of its economic proposals it did so with
    the expectation that it was creating an incentive for
    [JDF] to make some positive movement in increasing its
    economic offer.
    102. [JDF] would not have been willing to agree to
    give the same level of wage rate increase in 2009 if the
    Union insisted and prevailed on [JDF] to pay an extra
    amount for donning/doffing and related walking time.
    Majority op., ¶39 n.20.
    ¶65   On this record, it is undisputed that JDF and the Union's
    collective       bargaining      negotiations          over     the    years      involved
    discussions regarding compensation for donning and doffing.                              But
    nothing     in    writing     came     out        of   the    collective       bargaining
    negotiations      which     specifically          stated     whether    the     right     to
    compensation for donning and doffing was actually bargained away.
    If the relevant CBAs between the Union and JDF had said, "In
    exchange for the Union's waiver of compensation for donning and
    doffing protective gear, JDF will hereby increase base wages by X
    amount," then this would be an easy case.                       The employees would
    have bargained away their right to compensation for donning and
    doffing.     But we have no such language in the CBAs.                      Thus, there
    remains an issue of material fact: Was compensation for donning
    and doffing actually bargained away?
    ¶66   Accordingly, I conclude that compensation for donning
    and   doffing     is   subject    to    collective           bargaining     and    may    be
    bargained away under the plain language of Wis. Admin. Code § DWD
    274.05.     But I would remand for a factual determination under the
    11
    No.     2018AP1681.akz
    first prong of § DWD 274.05——whether the right to compensation for
    donning and doffing was actually bargained away in this case.                      The
    second     prong——whether     the    § DWD      274.05   factors    are     met——also
    remains to be determined.
    D.    The Majority Fails To Decide Whether The De Minimis
    Doctrine Applies And Provides No Guidance
    Regarding The Applicability Of Equitable Defenses.
    ¶67     In   addition   to    my   disagreement     with     the    majority's
    conclusions, I also take issue with the majority because it dodges
    important questions squarely before this court.                         The majority
    "assume[s] without deciding that the de minimis doctrine applies
    to   claims    arising    under     Wis.    Admin.   Code   § DWD       272.12,    and
    conclude[s] that the time spent donning and doffing here was not
    de minimis."       Majority op., ¶38.           Thus, the majority reaches its
    desired result without deciding an issue squarely presented to
    this court——whether the de minimis doctrine applies in Wisconsin.
    And the majority comes to a legal conclusion that the time is not
    de minimis without actually adopting a de minimis standard.                        The
    majority dodges this important issue entirely the same way the
    lead opinion in Hormel Foods Corp. did four years ago.                     See Hormel
    Foods    Corp.,    
    367 Wis. 2d 131
    ,       ¶181   (Gableman,      J.    dissenting,
    joined by Ziegler, J.) ("[T]he lead opinion, while pretending to
    engage in a de minimis-like discussion, does not actually answer
    the question before us.            Specifically, the lead opinion does not
    determine whether the de minimis doctrine applies in Wisconsin,
    does not explain what test or approach it used to reach its
    conclusion, and thus, does not provide any guidance for courts and
    parties moving forward.").
    12
    No.   2018AP1681.akz
    ¶68   I cannot join the majority's de minimis analysis because
    it leaves this important issue regarding the status of the de
    minimis doctrine in Wisconsin undecided.             Rather, I would conclude
    that the de minimis doctrine does indeed apply to claims arising
    under Wis. Admin. Code § DWD 272.12.             As the United States Supreme
    Court has explained:
    When the matter in issue concerns only a few seconds or
    minutes of work beyond the scheduled working hours, such
    trifles may be disregarded.    Split-second absurdities
    are not justified by the actualities of working
    conditions or by the policy of the Fair Labor Standards
    Act. It is only when the employee is required to give
    up a substantial measure of his time and effort that
    compensable working time is involved.
    Anderson v. Mt. Clemens Pottery Co., 
    328 U.S. 680
    , 692 (1946)
    (superseded by statute as noted in Integrity Staffing Solutions,
    Inc. v. Busk, 
    574 U.S. 27
     (2014)).
    ¶69   Furthermore, I cannot join the majority's de minimis
    analysis because the majority comes to a conclusion that the
    donning and doffing time is not de minimis without even adopting
    a standard.      Majority op., ¶37.    The majority leaves the bench and
    bar with nothing but confusion and unpredictability, just as the
    lead opinion did in Hormel Foods Corp.               See Hormel Foods Corp.,
    
    367 Wis. 2d 131
    , ¶189 (Gableman, J. dissenting, joined by Ziegler,
    J.)   (footnote    omitted)   ("The    lead      opinion   tiptoes   past   this
    quagmire by sidestepping the question entirely.             Consequently, the
    question    is     left   unanswered       and     Wisconsinites     are    left
    wondering.").
    ¶70   The majority also "conclude[s] that the circuit court
    applied an improper legal standard when it determined that Wis.
    13
    No.   2018AP1681.akz
    Stat. § 109.03(5) . . . acted as a complete bar to JDF's equitable
    defenses."      Majority op., ¶43.         It then remands to the circuit
    court "for full consideration of each of the equitable defenses
    and a determination as to whether any of these defenses preclude
    the employees' recovery of damages."               Id.    I agree with the
    majority that § 109.03(5) is not a complete bar to equitable
    defenses, but I cannot join the majority opinion because it
    provides the circuit court with no guidance whatsoever regarding
    those equitable defenses.
    III.   CONCLUSION
    ¶71    I conclude that compensation for donning and doffing is
    subject    to   collective    bargaining     and   may   be   bargained    away,
    modified, or waived under Wis. Admin. Code § DWD 274.05.                  I also
    conclude that there is an issue of material fact regarding whether
    compensation for donning and doffing was actually bargained away
    in this case.      Finally, I conclude that the de minimis doctrine
    applies in Wisconsin.        I take issue with the majority's failure to
    answer the important question whether the de minimis doctrine
    applies and the majority's failure to provide guidance regarding
    equitable defenses.      Accordingly, I would remand to the circuit
    court for further proceedings consistent with this opinion.
    ¶72    For the foregoing reasons, I respectfully dissent.
    ¶73    I am authorized to state that Chief Justice PATIENCE
    DRAKE ROGGENSACK joins this dissent.
    14
    No. 2018AP1681.rgb
    ¶74       REBECCA GRASSL BRADLEY, J.          (dissenting).   I agree with
    the majority that Wisconsin law precludes parties from bargaining
    away employees' statutory rights to compensation.                      However, I
    disagree with the majority's conclusion that the time spent by
    Jones Dairy Farm ("JDF") employees donning and doffing was de
    minimis.         I also disagree with the majority's decision to "assume
    without deciding" that the de minimis doctrine applies to claims
    under Wis. Admin. Code § DWD 272.12 (May 2019).                    The de minimis
    doctrine is prevalent in other areas of Wisconsin law, and the
    doctrine applies to employment claims under federal law.                    I would
    apply the de minimis doctrine to claims under Wisconsin's labor
    laws and conclude that the donning and doffing time in this case
    was de minimis.         I respectfully dissent.1
    I
    ¶75       The doctrine of "de minimis non curat lex" recognizes
    that "[t]he law does not concern itself with trifles."                  De Minimis
    Non Curat Lex, Black's Law Dictionary (11th ed. 2019).                            This
    doctrine appeared in 19th century Wisconsin cases and predates
    statehood.         See, e.g., Hass v. Prescott, 
    38 Wis. 146
    , 151 (1875)
    (concluding that even if the judgment was 24 cents in excess of
    what       was   appropriate,   "it   would    not    work   a   reversal    of   the
    judgment.        De minimis non curat lex"); Carman v. Hurd, 
    1 Pin. 619
    ,
    624    (1846)       ("An   excess     of   some      sixty-four    cents . . . is
    complained of here.        This is a small matter to urge in this court:
    de minimis non curat lex.").           This court has applied the doctrine
    Because I conclude the time at issue in this case was de
    1
    minimis, I would not reach the equitable defenses raised by JDF.
    1
    No. 2018AP1681.rgb
    in a variety of contexts.        See, e.g., Village of Lannon v. Wood-
    Land Contractors, Inc., 
    2003 WI 150
    , ¶46, 
    267 Wis. 2d 158
    , 
    672 N.W.2d 275
         (applying    to   use   of   personal   property     for    tax
    exemptions); Chappy v. LIRC, 
    136 Wis. 2d 172
    , 189, 
    401 N.W.2d 568
    (1987) (applying to contract rights); Wisconsin Emp. Relations Bd.
    v. Lucas, 
    3 Wis. 2d 464
    , 469, 
    89 N.W.2d 300
     (1958) (recognizing
    state labor relations board cannot take jurisdiction of unfair
    labor complaint if the allegation involves an actor engaging in
    "more than de minimis" interstate commerce).
    ¶76     Wisconsin never affirmatively adopted or rejected the de
    minimis doctrine in employment law.          See majority op., ¶38 ("We
    assume without deciding that the de minimis doctrine applies to
    claims arising under Wis. Admin. Code § DWD 272.12[.]"); United
    Food & Commercial Workers Union, Local 1473 v. Hormel Foods Corp.,
    
    2016 WI 13
    , ¶¶98-100, 
    367 Wis. 2d 131
    , 
    876 N.W.2d 99
     (Abrahamson,
    J., joined by Ann Walsh Bradley, J.) ("Assuming, without deciding,
    that the de minimis doctrine is applicable to claims under Wis.
    Admin.     Code   § DWD    272.12[.]");     Id.,   ¶181   (Gableman,       J.,
    dissenting, joined by Zeigler, J.) ("[T]he lead opinion does not
    determine     whether      the   de    minimis     doctrine   applies        in
    Wisconsin[.]").
    ¶77     In contrast, the doctrine is well-established in federal
    employment law.     In a case involving compensation for time spent
    walking in the workplace, the Supreme Court stated:
    We do not, of course, preclude the application of a de
    minimis rule where the minimum walking time is such as
    to be negligible. . . . When the matter in issue
    concerns only a few seconds or minutes of work beyond
    the scheduled working hours, such trifles may be
    disregarded. . . . It is only when an employee is
    2
    No. 2018AP1681.rgb
    required to give up a substantial measure of his time
    and effort that compensable working time is involved.
    The de minimis rule can doubtless be applied to much of
    the walking time involved in this case[.]
    Anderson v. Mt. Clemens Pottery Co., 
    328 U.S. 680
    , 692 (1946)
    superseded by statute, Portal to Portal Act of 1947, Pub. L. No.
    80-49, 
    61 Stat. 84
    , as recognized in Integrity Staffing Sols.,
    Inc. v. Busk, 
    574 U.S. 27
     (2014).    In Integrity Staffing Sols.,
    the Supreme Court again acknowledged the doctrine in the context
    of employment compensation, "reject[ing] the employees' argument
    that time spent waiting to undergo the security screenings is
    compensable [under federal law] because Integrity Staffing could
    have reduced that time to a de minimis amount." Integrity Staffing
    Sols., 574 U.S. at 36.
    ¶78   The United States Court of Appeals for the Ninth Circuit
    established criteria for determining whether otherwise compensable
    time is de minimis:   (1) "the amount of daily time spent on the
    additional work"; (2) "the practical administrative difficulty of
    recording the additional time"; (3) "the aggregate amount of
    compensable time"; and (4) "the regularity of the additional work."
    Lindow v. United States, 
    738 F.2d 1057
    , 1062-63 (9th Cir. 1984).
    Although no exact amount or rigid rule is determinative, "[m]ost
    courts have found daily periods of approximately 10 minutes de
    minimis[.]"   
    Id. at 1062
     (citations omitted).      Applying these
    factors, the Lindow court deemed de minimis an average of 7 to 8
    minutes a day performing pre-shift activity because recording this
    time was administratively difficult and the employees did not
    regularly perform the pre-shift compensable work.   
    Id. at 1064
    .
    ¶79   Other federal courts of appeal are in accord. See, e.g.,
    Kellar v. Summit Seating, Inc., 
    664 F.3d 169
    , 176-77 (7th Cir.
    3
    No. 2018AP1681.rgb
    2011) (applying Lindow; concluding pre-shift work between 15 and
    40 minutes per day was not de minimis); Perez v. Mountaire Farms,
    Inc., 
    650 F.3d 350
    , 372-75 (4th Cir. 2011); (adopting the Lindow
    factors and holding 10.204 minutes per day was not de minimis);
    Brock v. City of Cincinnati, 
    236 F.3d 793
    , 804-05 (6th Cir. 2001)
    (holding the doctrine was not applicable after balancing the Lindow
    criteria); Reich v. Monfort, Inc., 
    144 F.3d 1329
    , 1333-34 (10th
    Cir. 1998) (applying the Lindow factors); Reich v. New York City
    Transit Auth., 
    45 F.3d 646
    , 652-53 (2d Cir. 1995) (applying the
    Lindow test and concluding extra time dog handlers spent attending
    their dogs was de minimis); see also 
    29 C.F.R. § 785.47
     (2019).                    I
    would join other courts in adopting Lindow's test for assessing
    whether the time Wisconsin employees spend donning and doffing is
    de minimis.
    II
    ¶80   In this case, the parties stipulated that the total time
    an employee spent donning and doffing per day was 4.3 minutes.
    The time spent walking to the employees' workstations varied from
    .30   minutes   to   4.33   minutes,       depending   on    the    department.
    Collectively, the employees seek pay for time ranging from roughly
    4 minutes and 40 seconds to roughly 8 minutes and 40 seconds.                     In
    Lindow, the Ninth Circuit held that 7 to 8 minutes of time spent
    per day was de minimis.        See Lindow, 
    738 F.2d at 1064
    .                   Even
    assuming 10 minutes of non-paid time, it was "negligible so that
    the de minimis rule . . . should be applied."               Green v. Planters
    Nut & Chocolate Co., 
    177 F.2d 187
    , 188 (4th Cir. 1949).                   Indeed,
    "[m]ost courts have found daily periods of approximately 10 minutes
    de minimis even though otherwise compensable."              Lindow, 
    738 F.2d 4
    No. 2018AP1681.rgb
    at 1062 (citations omitted).             As the dissent in Hormel noted,
    "Lindow     itself     stands    for    the    proposition     that      7    to     8
    minutes . . . qualified as de minimis."                
    367 Wis. 2d 131
    , ¶187
    n.24 (Gableman, J., dissenting joined by Zeigler, J.) (citing
    Lindow, 
    738 F.2d at 1063-64
    ); see also Hoyt v. Ellsworth Co-op.
    Creamery, 
    579 F. Supp. 2d 1132
    , 1138 (W.D. Wis. 2008) ("Spending
    approximately 10 minutes per day changing may weigh in favor of
    the time being considered de minimis.").                    This first factor
    suggests the time spent donning and doffing by JDF employees, as
    well as walking to their workstations, should be deemed de minimis.
    ¶81    The next consideration is the "administrative difficulty
    of recording the additional time."             Lindow, 
    738 F.2d at 1063
    .            In
    particular, the inquiry focuses on the "practical administrative
    difficulty     of    recording   small       amounts   of   time   for       payroll
    purposes."     
    Id. at 1062
     (emphasis added; citation omitted).                While
    the parties stipulated to the time in this case, such an ex-post
    stipulation in the midst of litigation says nothing about the
    administrative difficulty of recording the additional time.                        JDF
    explained it stipulated to the number of minutes because litigating
    the amount would be expensive due to the difficulty of accurately
    measuring and recording the time spent donning and doffing.
    ¶82    One of the plaintiffs and another employee testified JDF
    employees often engaged in personal conversations or personal
    activities during the same pre- or post-shift time spent donning
    and doffing.        Under these circumstances, JDF would be challenged
    to   measure   the    time   spent     donning   and   doffing     without     also
    capturing non-compensable personal activities.                See Lindow, 
    738 F.2d at 1063-64
     (concluding there would have been administrative
    5
    No. 2018AP1681.rgb
    difficulty "monitoring [] pre-shift activity" in part because of
    a    "wide   variance   in      the     amount      of    pre-shift        time    spent    on
    compensable      activities        as    opposed          to    social      activities.").
    Similarly, there is no practical way JDF could account for the
    differing speeds with which employees don and doff their clothing,
    or walk to their stations.               See Monfort, Inc., 
    144 F.3d at 1334
    (concluding that where "employees used a variety of safety gear
    that     took    varying        times     to       take        on    and   off"     it     was
    "administratively difficult to record the actual time each worker
    engaged in these activities").                 It would be nearly impossible for
    JDF to accurately account for each employee's time spent donning
    and doffing.       The administrative difficulty in recording this
    additional time weighs heavily in favor of the donning and doffing
    time being de minimis.
    ¶83   The third Lindow factor examines the aggregate amount of
    the donning and doffing time.              The stipulated time range averages
    $675 per employee per year.              See majority op., ¶37.               Even if the
    aggregate compensable wages may weigh against determining the
    claim to be de minimis, this factor is not dispositive.                             Rather,
    "the administrative difficulty of recording the time and the
    irregularity of the additional pre-shift work" renders the claim
    de     minimis   even      if    "plaintiffs'             aggregate        claim    may     be
    substantial."      Lindow, 
    738 F.2d at 1064
    .
    ¶84   Lindow's      final      factor       in     the       de   minimis   analysis
    considers the "regularity of the additional work."                            Lindow, 
    738 F.2d at 1063
    .     While the JDF employees don their clothes every day
    prior to their shifts and doff them each day at the end of their
    shifts, the irregularity in these activities, as in Lindow, stems
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    from "a wide variance in the amount of pre-shift time spent on
    compensable activities as opposed to social activities."                       
    Id. at 1063
    .      The personal activities periodically and unpredictably
    intermingled      with    donning   and       doffing,      such    as   primping,
    socializing with co-workers, reading newspapers, texting, and
    surfing the internet, introduce irregularity in performing work
    tasks and weigh in favor of the time being deemed de minimis under
    the Lindow test.     
    Id. at 1063-64
    .
    ¶85    While the aggregate size of the claim and daily practice
    of donning and doffing weigh against deeming plaintiffs' claim de
    minimis,    the   daily    amount   of       time   spent   engaging     in     these
    activities, the variability among employees in the time spent on
    compensable       work    versus    personal          activities,        and      the
    administrative difficulty in recording the additional time all
    weigh in favor of deeming the time to be de minimis.                           Lindow
    described the specific time spent each day performing the work as
    the "important factor" and noted the rule in its entirety focuses
    on the "administrative difficulty" consideration.                  See Lindow, 
    738 F.2d at 1062
    .      The Supreme Court has likewise placed more weight
    on the specific time spent each day on the challenged activity.
    In Anderson, the Court noted that it could apply the de minimis
    rule to "much of the walking time involved[,]" but remanded for a
    factual determination "as to the amount of walking time in issue."
    
    328 U.S. at 692
     (emphasis added).              The Court was clear its main
    concern focused on the first factor adopted by Lindow:
    When the matter in issue concerns only a few seconds or
    minutes of working beyond the scheduled working hours,
    such trifles may be disregarded. . . . It is only when
    the employee is required to give up a substantial measure
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    of his time and effort that compensable working time is
    involved.
    
    Id.
        (emphasis added).     In rejecting application of the de minimis
    rule, the Court just a few years ago emphasized the specific time
    at    issue.      See   Integrity   Staffing   Sols.,   574   U.S.   at   36-37
    (rejecting an argument that the time spent was compensable because
    the employer "could have reduced that time to a de minimis amount."
    (emphasis added)).
    III
    ¶86     In the context of labor law, Wisconsin cases provide no
    guidance regarding application of the de minimis doctrine, this
    court having declined to decide the issue. We have already adopted
    the doctrine in other areas of law, see supra ¶75, and we should
    extend the doctrine to wage and hour claims, consistent with
    federal courts.         Harmonizing the Supreme Court's statements in
    Anderson and Integrity Staffing Sols. with the Ninth Circuit's
    holding in Lindow, the specific time spent each day on the activity
    and the administrative difficulty in recording the additional time
    are the most important considerations in the de minimis analysis.
    The roughly 4 minutes and 40 seconds to 8 minutes and 40 seconds
    spent per day donning and doffing and walking to workstations
    render the time de minimis, particularly when coupled with the
    administrative difficulty in recording this extra time for payroll
    purposes.       Accordingly, I would determine the time to be non-
    compensable under the de minimis doctrine. I respectfully dissent.
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