Augustus v. ABM Security Services , 211 Cal. Rptr. 3d 634 ( 2016 )


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  • Filed 12/22/16
    IN THE SUPREME COURT OF CALIFORNIA
    JENNIFER AUGUSTUS et al.,              )
    )
    Plaintiffs and Respondents, )
    )                         S224853
    v.                          )
    )           Ct.App. 2/1 B243788, B247392
    ABM SECURITY SERVICES, INC.,           )
    )                  Los Angeles County
    Defendant and Appellant.    )                Super. Ct. No. BC336416,
    )                BC345918 & CG5444421
    ____________________________________)
    We granted review to address two related issues: whether employers are
    required to permit their employees to take off-duty rest periods under Labor Code
    section 226.7 and Industrial Welfare Commission (IWC) wage order No. 4-2001
    (Cal. Code Regs., tit. 8, § 11040 (Wage Order 4)), and whether employers may
    require their employees to remain ―on call‖ during rest periods. What we
    conclude is that state law prohibits on-duty and on-call rest periods. During
    required rest periods, employers must relieve their employees of all duties and
    relinquish any control over how employees spend their break time. (See Brinker
    Restaurant Corp. v. Superior Court (2012) 
    53 Cal. 4th 1004
    , 1038-1039 (Brinker).)
    Plaintiffs worked as security guards for defendant ABM Security Services,
    Inc. (ABM). A requirement of employment at ABM was for guards to keep their
    pagers and radio phones on –– even during rest periods –– and to remain vigilant
    SEE CONCURRING AND DISSENTING OPINION
    and responsive to calls when needs arose. ABM‘s understanding about the scope
    of such needs, meanwhile, encompassed a variety of circumstances, including
    situations where a building tenant wished to be escorted to the parking lot, a
    building manager had to be notified of a mechanical problem, or the occurrence of
    some kind of ―emergency situation.‖ Plaintiffs sued ABM, alleging the company
    failed to provide the rest periods that state law entitles employees to receive. The
    trial court granted summary judgment for plaintiffs, finding ABM liable and
    awarding approximately $90 million –– but the Court of Appeal reversed.
    Because state law requires employers to provide their employees with rest periods
    that are free from duties or employer control, we reverse the Court of Appeal.
    I. BACKGROUND
    ABM employs thousands of security guards at residential, retail, office, and
    industrial sites throughout California.1 While the number of guards at each site
    varies, the guards‘ primary responsibility does not: to provide ― ‗an immediate
    and correct response to emergency/life safety situations‘ ‖ and ― ‗physical security
    for the building, its tenants and their employees . . . by observing and reporting all
    unusual activities. In essence, [a guard] is the eyes and ears‘ ‖ of the site. Specific
    duties may include patrolling sites, responding to emergencies, identifying and
    reporting safety issues, providing escorts to parking lots, greeting and assisting
    tenants and visitors, monitoring and restricting access to sites, directing vehicular
    traffic and parking, monitoring and occasionally either restricting or assisting in
    moving property into and out of sites, making reports, and hoisting and lowering
    flags.
    1        We take the facts from the Court of Appeal‘s opinion.
    2
    In 2005, plaintiff Jennifer Augustus filed a putative class action on behalf
    of all ABM security guards. The trial court subsequently consolidated the matter
    with similar actions filed by two other ABM guards. Plaintiffs filed a master
    complaint, which alleged ABM‘s failure ―to consistently provide uninterrupted
    rest periods‖ as required by state law. During discovery, ABM acknowledged it
    did not relieve guards of all duties during rest periods. In particular, ABM
    required guards to keep their radios and pagers on, remain vigilant, and respond
    when needs arose, such as escorting tenants to parking lots, notifying building
    managers of mechanical problems, and responding to emergency situations.
    Plaintiffs then moved for summary adjudication of their rest period claim in
    2010.2 It was undisputed, plaintiffs argued, that ABM had a policy of requiring its
    guards to remain on duty during breaks, and that such a policy violated state law.
    ABM opposed the motion. The company argued that, if it required anything at all
    during guards‘ rest periods, it was merely that guards remain on call — that is, to
    keep radios and pagers on — in case an incident required a response. ABM also
    offered evidence that class members regularly took breaks uninterrupted by
    service calls. But the trial court granted plaintiffs‘ motion, concluding that ABM‘s
    policy was to provide guards with rest periods subject to employer control and the
    obligation to perform certain work-related duties. The court reasoned that a rest
    period subject to such control was indistinguishable from the rest of a workday; in
    other words, an on-duty or on-call break is no break at all. The court subsequently
    granted plaintiffs‘ motion for summary judgment on damages, awarding
    approximately $90 million in statutory damages, interest, and penalties.
    2       Plaintiffs also alleged ABM failed to provide meal periods as required by
    state law, but that claim is not at issue here.
    3
    The Court of Appeal reversed. It agreed that ABM did not relieve guards
    of all duties during rest periods and instead required that they remain on call,
    compelling them to keep radios and pagers on and respond when necessary.3 But
    the court concluded that state law does not require employers to provide off-duty
    rest periods, and moreover, ―simply being on call‖ does not constitute performing
    work. We granted review to consider whether the Court of Appeal was correct in
    light of Labor Code section 226.7 and Wage Order 4.4
    II. DISCUSSION
    To answer the questions before us we must interpret both the Labor Code
    and the IWC wage orders that cover employees in plaintiffs‘ situation.5 We
    review the Court of Appeal‘s interpretation de novo. 
    (Mendiola, supra
    , 60 Cal.4th
    at p. 840.) When construing the Labor Code and wage orders, we adopt the
    construction that best gives effect to the purpose of the Legislature and the IWC.
    
    (Brinker, supra
    , 53 Cal.4th at pp. 1026-1027; Murphy v. Kenneth Cole
    3      The concurring and dissenting opinion mentions that ABM disputes this
    characterization of its rest period policy. (Conc. & dis. opn., post, at p. 2.) But
    while ABM contended that it had no blanket on-call policy and advanced this
    position before both the trial court and the Court of Appeal, it failed to persuade
    either. Instead, the trial court concluded –– and the Court of Appeal accepted ––
    that such a requirement existed, and ABM then elected not to petition the Court of
    Appeal for rehearing to correct any misstatements of fact.
    4      Subsequent unlabeled statutory references are to the Labor Code.
    5      The IWC is the state agency empowered to promulgate wage orders, which
    are legislative regulations specifying minimum requirements with respect to
    wages, hours, and working conditions. (Mendiola v. CPS Security Solutions, Inc.
    (2015) 
    60 Cal. 4th 833
    , 838 & fn. 6 (Mendiola).) Of the 18 wage orders remaining
    in effect, 16 cover specific industries and occupations, one applies to employees
    not covered by the industry- and occupation-specific orders, and one is a general
    minimum wage order. (Id. at pp. 838-839.) Wage Order 4, which includes
    ―guards‖ as a covered occupation along with many other clerical, professional, and
    service occupations (Wage Order 4, subd. 2(O)), applies here.
    4
    Productions, Inc. (2007) 
    40 Cal. 4th 1094
    , 1103 (Murphy).) Time and again, we
    have characterized that purpose as the protection of employees –– particularly
    given the extent of legislative concern about working conditions, wages, and hours
    when the Legislature enacted key portions of the Labor Code. (Mendiola, at
    p. 840 [― ‗to promote employee protection‘ ‖]; Martinez v. Combs (2010) 
    49 Cal. 4th 35
    , 53-54 (Martinez) [describing the Legislature‘s concerns]; Industrial
    Welfare Com. v. Superior Court (1980) 
    27 Cal. 3d 690
    , 702 (Industrial Welfare
    Com.) [noting the ―remedial nature‖ of legislative enactments and wage orders].)
    In furtherance of that purpose, we liberally construe the Labor Code and wage
    orders to favor the protection of employees. (E.g., Brinker, at pp. 1026-1027;
    Murphy, at p. 1103 [―statutes governing conditions of employment are to be
    construed broadly‖].) In doing so, we accord the IWC‘s interpretations
    ―considerable judicial deference‖ (Ramirez v. Yosemite Water Co. (1999) 
    20 Cal. 4th 785
    , 801) and take account of interpretations articulated by the Division of
    Labor Standards Enforcement (DLSE), the state agency that enforces wage orders,
    for guidance (Peabody v. Time Warner Cable, Inc. (2014) 
    59 Cal. 4th 662
    , 668,
    fn. 5).
    A. Wage Orders and the Labor Code
    In 1913, the Legislature established the IWC and –– spurred by concerns
    over inadequate wages and poor working conditions –– delegated to the agency
    authority for setting minimum wages, maximum hours, and working conditions. 6
    
    (Martinez, supra
    , 49 Cal.4th at pp. 52-55.) Three years later, the IWC began
    6       In its earliest incarnation, the IWC was empowered to regulate only the
    employment of women and children. (Industrial Welfare 
    Com., supra
    , 27 Cal.3d
    at p. 700.) In the early 1970s, the Legislature authorized the IWC to regulate the
    employment of all employees. (Id. at p. 701 [explaining courts concluded the
    prior limitation violated the federal prohibition on sex discrimination].)
    5
    issuing industry- and occupation-specific wage orders. Included within one of
    these was a requirement that employees be provided meal periods. 
    (Brinker, supra
    , 53 Cal.4th at p. 1026; 
    Murphy, supra
    , 40 Cal.4th at p. 1105.) Sixteen years
    later, in 1932, the IWC started requiring employers to give employees rest periods
    as well. (Murphy, at p. 1105; see Kilby v. CVS Pharmacy, Inc. (2016) 
    63 Cal. 4th 1
    , 12, fn. 4, quoting IWC order No. 18, Sanitary Regulations for Any Occupation,
    Trade, or Industry (Feb. 26, 1932) § 12 [―when women are required by the nature
    of their work to stand, a relief period shall be given every two (2) hours of not less
    than ten (10) minutes‖].) Since then, even as the IWC revised its wage orders
    from time to time, the rest period obligation remained unchanged. (See, e.g.,
    Brinker, at pp. 1028-1029 [discussing amendments to the rest period
    requirement].) The rest period language in Wage Order 4, subdivision 12(A) first
    appeared in IWC wage order No. 4-52. (Compare Wage Order 4, subd. 12(A)
    with IWC wage order No. 4-52, subd. 12 (Aug. 1, 1952).)
    Complementing these longstanding wage orders are statutes more recently
    enacted by the Legislature that also govern wages, hours, and working conditions
    in California. A case in point is section 226.7, enacted in 2000. As enacted,
    subdivision (a) provided: ―No employer shall require any employee to work
    during any meal or rest period mandated by an applicable order of the Industrial
    Welfare Commission.‖7 (Added by Stats. 2000, ch. 876, § 7, p. 6509.)
    7      This version of the statute was in effect when plaintiffs filed suit. The
    Legislature subsequently amended section 226.7 on two occasions (Stats. 2013,
    ch. 719, § 1; Stats. 2014, ch. 72, § 1), but those revisions are not relevant here.
    Thus, subsequent references to section 226.7 are to the originally enacted version.
    6
    B. Off-duty Rest Periods
    We first resolve whether state law requires employers to authorize off-duty
    rest periods –– that is, time during which an employee is relieved from all work-
    related duties and free from employer control. (See 
    Brinker, supra
    , 53 Cal.4th at
    pp. 1039-1040 [discussing obligation to provide off-duty meal periods].)
    The applicable wage order is what primarily defines the scope of an
    employer‘s obligation to provide rest periods. (See 
    Brinker, supra
    , 53 Cal.4th at
    p. 1028.) Accordingly, we begin with the text of Wage Order 4, subdivision 12.
    (See Reynolds v. Bement (2005) 
    36 Cal. 4th 1075
    , 1086 [―The best indicator of [the
    IWC‘s] intent is the language of the [wage order] provision itself‖].) Subdivision
    12(A) provides, in relevant part, ―Every employer shall authorize and permit all
    employees to take rest periods . . . . Authorized rest period time shall be counted,
    as hours worked for which there shall be no deduction from wages.‖8 In this case,
    the Court of Appeal concluded that subdivision 12(A) ―does not describe the
    nature of a rest period.‖ Noting that subdivision 11(A) requires employees be
    ―relieved of all duty‖ during meal periods,9 the court inferred from the absence of
    8       Wage Order 4, subdivision 12(A) also provides that employers must
    authorize 10 minutes, net rest time per four hours worked; a rest period should fall
    in the middle of each work period if practicable; and a rest period need not be
    authorized for employees whose total daily work time is less than three and one-
    half hours. Subdivision 12(B) provides that failure to comply with subdivision
    12(A) obliges employers to pay the employee one hour of pay ―for each workday
    that the rest period is not provided.‖ (See § 226.7, subd. (b) [same remedy].)
    9         Wage Order 4, subdivision 11(A) provides in part, ―No employer shall
    employ any person for a work period of more than five (5) hours without a meal
    period of not less than 30 minutes . . . . Unless the employee is relieved of all duty
    . . . , the meal period shall be considered an ‗on duty‘ meal period and counted as
    time worked. An ‗on duty‘ meal period shall be permitted only when the nature of
    the work prevents an employee from being relieved of all duty and when by
    written agreement between the parties an on-the-job paid meal period is agreed
    to. . . . [T]he employee may, in writing, revoke the agreement at any time.‖
    7
    similar language in subdivision 12(A) that ―no such [off-duty] requirement was
    intended‖ for rest periods. We find otherwise.
    The reference to a ―rest period‖ in the wage order evokes, quite plainly, a
    period of rest. In principle, other provisions in the wage order or related statutes
    could conceivably give us a reason to treat otherwise relatively straightforward
    words as terms of art. But neither Wage Order 4, subdivision 12(A) nor any other
    provisions in the wage order give us a reason to conclude that the term ―rest
    period‖ is imbued with a distinctive, unconventional meaning. The most
    reasonable inference we can draw from the wage order and its context is instead
    that we should give the term its most common understanding –– a reading
    consistent with requiring that employers authorize off-duty rest periods. (See
    
    Murphy, supra
    , 40 Cal.4th at p. 1103 [words generally given their ―plain and
    commonsense meaning‖].)
    The ordinary meaning of ―rest‖ conveys, in this context, the opposite of
    work. ―Rest‖ is defined by the American Heritage Dictionary as the ―[c]essation
    of work, exertion, or activity.‖ (American Heritage Dict. (4th ed. 2000) p. 1486,
    col. 1; accord, Merriam-Webster‘s Collegiate Dict. (11th ed. 2003) p. 1062
    [defining ―rest‖ as ―freedom from activity or labor‖].) So, ordinarily, a reasonable
    reader would understand ―rest period‖ to mean an interval of time free from labor,
    work, or any other employment-related duties. (American Heritage Dict., at
    p. 1307, col. 1 [defining ―period‖ as an ―interval of time characterized by the
    occurrence of a certain condition, event, or phenomenon‖].) Indeed, a rest period
    during which an employer may require that an employee continue performing
    duties seems to place too much semantic emphasis on ―period‖ –– and too little on
    ―rest.‖
    This reading of the wage order is also most consistent with section 226.7.
    That statute prohibits employers from ―requir[ing] any employee to work during
    8
    any meal or rest period . . . .‖ (§ 226.7, subd. (a), italics added; see 
    Brinker, supra
    ,
    53 Cal.4th at p. 1027 [―To the extent a wage order and a statute overlap, we will
    seek to harmonize them‖].) Moreover, section 226.7‘s prohibition applies in
    identical fashion to meal and rest periods, with its premium-pay remedy (§ 226.7,
    subd. (b)) triggered by the failure to provide either. We have explained that during
    meal periods, employers must ―relieve the employee of all duty and relinquish any
    employer control over the employee and how he or she spends the time.‖
    (Brinker, at pp. 1038-1039.) It would be difficult to cast aside section 226.7‘s
    parallel treatment of meal periods and rest periods and conclude that employers
    had completely distinct obligations when providing meal and rest periods. What
    makes sense instead is to infer that employers‘ responsibilities are the same for
    meal and rest periods –– an inference that also reflects the protective purpose of
    both. (E.g., 
    Murphy, supra
    , 40 Cal.4th at p. 1113 [―[e]mployees denied their rest
    and meal periods face greater risk of work-related accidents and increased
    stress‖].) Such an inference also proves consistent with the positions taken by
    both parties at oral argument.
    Consider also what the last sentence of Wage Order 4, subdivision 12(A)
    provides: ―Authorized rest period time shall be counted, as hours worked for
    which there shall be no deduction from wages.‖ This sentence makes sense only if
    employees are relieved of duties during rest periods. If employers could require
    employees to remain on duty during breaks, there would be no reason for the IWC
    to prohibit deduction of wages for rest periods; time spent performing duties
    would plainly require payment of wages.10 And this interpretation is the most
    10      Wage Order 4, subdivision 2(K) defines ―hours worked‖ as ―the time
    during which an employee is subject to the control of an employer, and includes
    all the time the employee is suffered or permitted to work, whether or not required
    (footnote continued on next page)
    9
    consistent with our practice of liberally construing wage orders. 
    (Brinker, supra
    ,
    53 Cal.4th at p. 1027.)
    The Court of Appeal nonetheless concluded that employers may require on-
    duty rest periods. But this conclusion is difficult to reconcile with Wage Order 4
    and section 226.7. The court grounded its conclusion in part on language in Wage
    Order 4, subdivision 11(A), which pertains to meal periods. That provision
    requires employers to provide a meal period of not less than 30 minutes once an
    employee has worked for five hours. 
    (Brinker, supra
    , 53 Cal.4th at p. 1039.) But
    it further states that, ―[u]nless the employee is relieved of all duty . . . , the meal
    period shall be considered an ‗on duty‘ meal period and counted as time worked.‖
    (Wage Order 4, subd. 11(A).) The court inferred that the absence of similar
    ―relieved of all duty‖ language in subdivision 12(A) meant the IWC did not intend
    to require off-duty rest periods. We find otherwise.
    We do so because the absence of language in subdivision 12(A) authorizing
    on-duty rest periods proves far more important than any language in Wage Order
    4, subdivision 11(A). The IWC could have allowed on-duty breaks –– and did so
    in subdivision 11(A). Its failure to do so in subdivision 12(A) is a telling
    indication it did not contemplate on-duty rest periods more generally. (Lake v.
    Reed (1997) 
    16 Cal. 4th 448
    , 466 [discussing the interpretative canon expressio
    unius].) This is the best interpretation not only because we construe wage order
    provisions in favor of employees and avoid creating exceptions by implication
    (see 
    Mendiola, supra
    , 60 Cal.4th at p. 847), but also because the contrary
    (footnote continued from previous page)
    to do so.‖ Subdivision 4(A) requires every employer to ―pay to each employee
    wages . . . for all hours worked.‖ (See 
    Mendiola, supra
    , 60 Cal.4th at p. 839.)
    10
    interpretation creates an odd disparity. When there is an on-duty meal period, the
    employee gains something –– wages –– he or she would not have received
    otherwise. But when forced to take on-duty rest periods, ―an employee essentially
    performs . . . ‗free‘ work, i.e., the employee receives the same amount of
    compensation for working through the rest periods that the employee would have
    received had he or she been permitted to take [off-duty] rest periods.‖ (
    Murphy, supra
    , 40 Cal.4th at p. 1104.)
    What also proves important is the on-duty meal period exception in Wage
    Order 4, subdivision 11(A). That exception is exceedingly narrow, applying only
    when (1) ―the nature of the work prevents an employee from being relieved of all
    duty‖ and (2) the employer and employee have agreed, in writing, to the on-duty
    meal period. Even then, the employee retains the right to ―revoke the agreement at
    any time.‖ (Ibid.) These narrow terms undercut the argument that the provision
    creates, by implication, a broad rest period exception permitting employers to
    unilaterally require that employees take on-duty rest breaks without receiving
    additional compensation.
    Here too, the IWC could have easily varied these rest period obligations.
    Wage Order 4, subdivision 12 is identical to the rest period provisions of most
    other wage orders. (E.g., Cal. Code Regs., tit. 8, §§ 11010, 11020, 11030, 11060,
    11070, 11080, 11090, 11110, 11130, 11140, 11150 [all containing identical
    provisions].) But the provision in IWC wage order No. 5-2001 (Wage Order 5)
    (Cal. Code Regs., tit. 8, §§ 11050, subd. 12) goes further. In addition to the
    language present in the other wage orders, Wage Order 5 provides, ―employees
    with direct responsibility for children who are under 18 years of age or who are
    not emancipated from the foster care system and who, in either case, are receiving
    24 hour residential care and employees of 24 hour residential care facilities for
    elderly, blind or developmentally disabled individuals may, without penalty, [be
    11
    required] to remain on the premises and maintain general supervision of residents
    during rest periods if the employee is in sole charge of residents. Another rest
    period shall be authorized and permitted by the employer when an employee is
    affirmatively required to interrupt his/her break to respond to the needs of
    residents.‖ (Id., subd. 12(C), italics added.) This language appears to authorize
    on-duty rest periods, but only in starkly limited circumstances. (See also Cal.
    Code Regs., tit. 8, § 11160, subd. 11 [different rest period provision for persons
    employed in the on-site occupations of construction].) From the absence of
    similar language in Wage Order 4 we can infer that the IWC‘s purpose was not to
    create an exception to the obligation imposed by subdivision 12(A) and section
    226.7. (See 
    Mendiola, supra
    , 60 Cal.4th at p. 847.)
    This inference also proves consistent with the DLSE‘s own interpretation.
    As the state agency empowered to enforce wage orders and state labor statutes, the
    DLSE is in a position to accumulate both knowledge and experience relevant to
    the administration of wage orders. 
    (Brinker, supra
    , 53 Cal.4th at p. 1029 & fn.
    11.) While its opinion letters are not controlling, they reflect the type of
    experience and considered judgment that may properly inform our judgment.
    (Yamaha Corp. of America v. State Bd. of Equalization (1998) 
    19 Cal. 4th 1
    , 14
    (Yamaha).) In an advice letter dated February 22, 2002, the DLSE described the
    scope of an employer‘s rest period obligation and, in doing so, stated, ―there must
    be a net 10 minutes of rest provided in each ‗work period‘ and the rest period must
    be, as the language implies, duty-free.‖ (Dept. Industrial Relations, DLSE Opn.
    Letter No. 2002.02.22 (2002) p. 1, italics added.) In a letter dated January 3,
    1986, the DLSE noted that the IWC settled on requiring 10 minutes of net rest
    time after first considering a proposal to require a 15- or 20-minute rest period.
    (Dept. Industrial Relations, DLSE Opn. Letter No. 1986.01.03 (1986) p. 1.) The
    DLSE explained that the IWC‘s purpose ―was to insure that the employee would
    12
    be free from work for ten minutes . . . .‖ (Ibid., italics added; accord, Dept.
    Industrial Relations, DLSE Opn. Letter No. 1995.06.02 (1995) p. 1 [DLSE
    focused on amount of ―non-work time‖ in discussing whether employer authorized
    a sufficiently long rest period].) The DLSE letters admittedly concern situations
    distinct from the one before us –– but they nonetheless tend to support the
    conclusion that Wage Order 4, subdivision 12(A) is best understood to require off-
    duty rest periods. (See Faulkinbury v. Boyd & Assoc. (2013) 
    216 Cal. App. 4th 220
    , 236 [citing DLSE letters in concluding ―[t]here does not appear to be an on-
    duty rest break exception‖].)11
    In arguing to the contrary, ABM cites minutes of an IWC meeting on May
    26, 1952, during which IWC commissioners discussed changes made to the 1952
    wage orders. The minutes indicate that the rest period provision in the wage
    orders ― ‗was clarified to indicate . . . that the [IWC] did not intend a completely
    off-duty rest period to be applicable in the case of an employee who is alone on a
    shift and has ample time to rest because of the nature of the work. This would be
    true in the case of a night switchboard operator on a small board, a night hotel
    clerk, etc. If employees in such positions are able to rest on the job it is not
    intended that the employer provide a special relief employee.‘ ‖ (IWC meeting
    mins. (May 26, 1952) p. 34.)
    11     The concurring and dissenting opinion instead relies on a 1992 DLSE
    opinion letter, which concluded time spent during a meal break wearing a pager
    may be noncompensable. (Conc. & dis. opn., post, at p. 6.) That letter involves a
    different issue –– the compensability of time during otherwise unpaid 30-minute
    meal breaks. In Brinker, we clarified the meaning of the relevant statutory and
    wage order provisions. During meal breaks, we held, employers must relieve
    employees of all duty and relinquish any control over employees and how they
    spend their time. 
    (Brinker, supra
    , 53 Cal.4th at pp. 1038-1039.)
    13
    Precisely what revision this comment referenced is far from clear. The only
    relevant change in the 1952 wage orders was the addition of language relieving
    employers of the need to provide a rest period for shifts of 3.5 hours or less. The
    minutes may have simply reflected the IWC members‘ understanding that an
    employer was not required to provide a relief employee with break time, or their
    acknowledgement that an employer remained free to seek an exemption from its
    expanded rest period obligations. Since the early 1940s, the wage orders
    applicable to professional, technical, clerical, and similar occupations — now
    including Wage Order 4 –– have contained provisions that allow employers to
    request exemptions from certain obligations, including the obligation to provide
    rest periods. (E.g., IWC wage order No. 4R, subd. 25 (June 1, 1947); Wage Order
    4, subd. 17.)12 In 1976, the IWC discussed rest period obligations and, ―[i]n
    response to arguments that in some situations workers are almost continually
    resting while they monitor machines and cannot be spared from their places,‖ the
    IWC noted it ―provides for the possibility of exemptions in accord with the
    requirements of Section 18.‖ (IWC, Statement as to the Basis for Wage Order No.
    4-76 (Apr. 25, 1977) p. 29.)
    Whatever the meaning of the comment in the 1952 minutes, it does not
    support the conclusion that the IWC created through its wage orders a default
    presumption that employers could impose duties on employees during their rest
    periods. And we are bound, moreover, to interpret Wage Order 4 and the text of
    12     This remains an option for employers: Wage Order 4, subdivision 17
    provides, ―If, in the opinion of the [DLSE] after due investigation, it is found that
    the enforcement of any provision contained in . . . Section 12, Rest Periods . . .
    would not materially affect the welfare or comfort of employees and would work
    an undue hardship on the employer, exemption may be made at the discretion of
    the [DLSE].‖ Indeed, ABM requested, and received, two one-year exemptions
    from its rest period obligations. Both have since expired.
    14
    section 226.7 in light of their broader purpose. We accordingly conclude that the
    construction of Wage Order 4, subdivision 12(A) that best effectuates the order‘s
    purpose and remains true to its provisions is one that obligates employers to
    permit –– and authorizes employees to take –– off-duty rest periods. That is,
    during rest periods employers must relieve employees of all duties and relinquish
    control over how employees spend their time. (See 
    Brinker, supra
    , 53 Cal.4th at
    pp. 1038-1039.)
    C. On-call Rest Periods
    We next consider the second question raised by the parties: can an
    employer satisfy its obligation to relieve employees from duties and employer
    control during rest periods when the employer nonetheless requires its employees
    to remain on call? The answer, we conclude, is no — and an analysis of the
    regulatory framework, as well as the practical realities of rest periods, shows why.
    Neither Wage Order 4 nor section 226.7 provides a straightforward answer to
    whether on-call rest periods are permissible. Neither mentions on-call time at all,
    let alone on-call rest periods. (But see Wage Order 4, subd. 5(D) [providing that
    reporting-time pay requirements ―shall not apply to an employee on paid standby
    status who is called to perform assigned work‖].) Nonetheless, one cannot square
    the practice of compelling employees to remain at the ready, tethered by time and
    policy to particular locations or communications devices, with the requirement to
    relieve employees of all work duties and employer control during 10-minute rest
    periods.
    Although Wage Order 4 is silent as to on-call rest periods, our construction
    of subdivision 12(A) cannot be reconciled with permitting employers to require
    employees to remain on call. As we explained, a rest period means an interval of
    time free from labor, work, or any other employment-related duties. And
    employees must not only be relieved of work duties, but also be freed from
    15
    employer control over how they spend their time. (See 
    Brinker, supra
    , 53 Cal.4th
    at pp. 1039-1040.) Given the practical realities of rest periods, an employer
    cannot satisfy its obligations under Wage Order 4, subdivision 12(A) while
    requiring that employees remain on call.
    Because rest periods are 10 minutes in length (Wage Order 4, subd. 12(A),
    they impose practical limitations on an employee‘s movement. That is, during a
    rest period an employee generally can travel at most five minutes from a work post
    before returning to make it back on time. Thus, one would expect that employees
    will ordinarily have to remain onsite or nearby. This constraint, which is of course
    common to all rest periods, is not sufficient to establish employer control. But
    now add to this state of affairs the additional constraints imposed by on-call
    arrangements. Whatever else being on call entails in the context of a required rest
    break, that status compels employees to remain at the ready and capable of being
    summoned to action (see, e.g., 
    Mendiola, supra
    , 60 Cal.4th at p. 837). Employees
    forced to remain on call during a 10-minute rest period must fulfill certain duties:
    carrying a device or otherwise making arrangements so the employer can reach the
    employee during a break, responding when the employer seeks contact with the
    employee, and performing other work if the employer so requests. These
    obligations are irreconcilable with employees‘ retention of freedom to use rest
    periods for their own purposes. (Morillion v. Royal Packing Co. (2000) 
    22 Cal. 4th 575
    , 586.)
    This very case provides an apt example. The trial court determined it was
    undisputed that ABM‘s policy required plaintiffs to keep radios and pagers on,
    remain vigilant, and respond if the need arose. Given these intersecting realities,
    on-call rest periods do not satisfy an employer‘s obligation to relieve employees of
    all work-related duties and employer control. In the context of a 10-minute break
    that employers must provide during the work period, a broad and intrusive degree
    16
    of control exists when an employer requires employees to remain on call and
    respond during breaks. (See Wage Order 4, subd. 12(A) [employers must provide
    a 10-minute rest period per every four hours worked and the break should,
    whenever practicable, fall in the middle of the work period].) An employee on
    call cannot take a brief walk — five minutes out, five minutes back — if at the
    farthest extent of the walk he or she is not in a position to respond. Employees
    similarly cannot use their 10 minutes to take care of other personal matters that
    require truly uninterrupted time — like pumping breast milk (see § 1030
    [regarding use of break time for expressing milk for an infant]) or completing a
    phone call to arrange child care. The conclusion that on-call rest periods are
    impermissible is not only the most logical in light of our construction of Wage
    Order 4, subdivision 12(A), but is the most consistent with the protective purpose
    of the Labor Code and wage orders. (
    Murphy, supra
    , 40 Cal.4th at p. 1105 [―rest
    periods have long been viewed as part of the remedial worker protection
    framework‖].) A different result would undermine the rationale underlying the
    provision of rest periods during the workday. (Id. at p. 1113; Morillion v. Royal
    Packing 
    Co., supra
    , 22 Cal.4th at p. 586.)13
    13      Plaintiffs argue that the on-call break time here constituted compensable
    work under 
    Mendiola, supra
    , 
    60 Cal. 4th 833
    , so there was no way it could satisfy
    ABM‘s obligation to provide duty-free rest periods. ABM cites Mendiola for the
    opposite proposition. But Mendiola is distinguishable. For one thing, shifts
    lasting eight hours (e.g., Mendiola) or longer (Madera Police Officers Assn. v.
    City of Madera (1984) 
    36 Cal. 3d 403
    , 412 [involving 24-hour shifts]) are
    significantly different from breaks, which are short in duration, break up work
    periods, and thereby protect employees‘ health and safety (
    Murphy, supra
    , 40
    Cal.4th at p. 1113). For another thing, factors relevant to the extent of employer
    control during an on-call shift of eight hours or more are inapposite in the context
    of a rest or meal period. (Mendiola, at p. 841 [e.g., on-premises living
    requirement, excessive geographical restrictions, etc.].)
    17
    ABM describes this conclusion as ―radical.‖ It contends such a rule means
    that ―California law requires an employer to categorically prohibit its employees
    from ever being recalled to work while they are on rest breaks, regardless of the
    exigency . . . .‖ Not so. Nothing in our holding circumscribes an employer‘s
    ability to reasonably reschedule a rest period when the need arises. Instead, we
    address whether employees can be forced to shoulder an affirmative responsibility
    to remain on call, vigilant, and at the ready during their rest periods. That is what
    the policy at issue in this case required: employees, the trial court found, were
    required ―to keep their radios and pagers on during rest breaks, to remain vigilant,
    and to respond when needs arise,‖ including escorting tenants to parking lots and
    notifying building managers of mechanical problems — responsibilities
    substantially similar to plaintiffs‘ ordinary job duties. Such policies conflict with
    an employer‘s obligation to provide breaks relieving employees of all work-related
    duties and employer control.
    ABM recognizes that the employer has a break-related obligation to its
    employees. But it suggests that we define that obligation by distinguishing
    between, on the one hand, requiring a guard to work and, on the other hand,
    requiring a guard to remain on duty or on call. It would also have courts
    determine whether an on-call obligation unreasonably interferes with an
    employee‘s opportunity to take an uninterrupted rest period. This proposed course
    would result in less clarity and considerably greater administrative complexities.
    And it makes for an awkward fit with section 226.7‘s text, which forbids
    employers from requiring employees to work during any meal or rest period, and
    Wage Order 4, which requires employers to provide rest periods and explicitly
    indicates that employees must generally be relieved of all duty during meal
    periods (Wage Order 4, subd. 11(A)). Several options nonetheless remain
    available to employers who find it especially burdensome to relieve their
    18
    employees of all duties during rest periods –– including the duty to remain on call.
    Employers may (a) provide employees with another rest period to replace one that
    was interrupted, or (b) pay the premium pay set forth in Wage Order 4,
    subdivision 12(B) and section 226.7.14 (See 
    Brinker, supra
    , 53 Cal.4th at
    p. 1039.)
    What is more, the rest period provision in Wage Order 5 (discussed ante, at
    p. 11) suggests that the IWC was capable of authorizing on-call rest periods in
    certain circumstances –– but did not do so here. The key provision in Wage Order
    5 contains the following language: ―employees with direct responsibility for
    children who are under 18 years of age or who are not emancipated from the foster
    care system and who, in either case, are receiving 24 hour residential care and
    employees of 24 hour residential care facilities for elderly, blind or
    developmentally disabled individuals may, without penalty, [be required] to
    remain on the premises and maintain general supervision of residents during rest
    periods if the employee is in sole charge of residents. Another rest period shall be
    authorized and permitted by the employer when an employee is affirmatively
    required to interrupt his/her break to respond to the needs of residents.‖ (Wage
    Order 5, subd. 12(C), italics added.) That is, Wage Order 5‘s rest period provision
    allows, in limited circumstances, employers to require employees to take on-call
    14     Neither of these options implies that employers may pervasively interrupt
    scheduled rest periods, for any conceivable reason –– or no reason at all. Rather,
    such options should be the exception rather than the rule, to be used when the
    employer –– because of irregular or unexpected circumstances such as
    emergencies –– has to summon an employee back to work. If an employer seeks
    to be excused generally from compliance with the obligation to provide rest
    periods free of all duty and employer control, the employer should avail itself of
    the opportunity to request from the DLSE an exemption (Wage Order 4, subd. 17),
    as ABM had previously done on two occasions.
    19
    rest periods, remaining ready to assist residents should the need arise. If called
    into service, the on-call employee is entitled to another rest period. The absence
    of analogous language in Wage Order 4 is compelling evidence the IWC did not
    intend to generally permit employers to require employees to remain on call
    during rest periods. (See 
    Mendiola, supra
    , 60 Cal.4th at p. 847.)
    20
    III. CONCLUSION
    California law requires employers to relieve their employees of all work-
    related duties and employer control during 10-minute rest periods. The trial
    court‘s summary adjudication and summary judgment orders were premised on
    this understanding of the law. Rightly so: Wage Order 4, subdivision 12(A) and
    section 226.7 prohibit on-duty rest periods. What they require instead is that
    employers relinquish any control over how employees spend their break time, and
    relieve their employees of all duties –– including the obligation that an employee
    remain on call. A rest period, in short, must be a period of rest. We accordingly
    reverse the Court of Appeal‘s judgment on this issue.
    CUÉLLAR, J.
    WE CONCUR:
    CANTIL-SAKAUYE, C. J.
    WERDEGAR, J.
    CHIN, J.
    LIU, J.
    21
    CONCURRING AND DISSENTING OPINION BY KRUGER, J.
    I agree with the majority that employers must provide off-duty rest periods
    to nonexempt employees under Industrial Welfare Commission (IWC) wage order
    No. 4-2001 (Cal. Code Regs., tit. 8, § 11040 (Wage Order 4)) and Labor Code
    section 226.7. (Maj. opn., ante, at pp. 7–15.) As the majority says, the rest period
    required by law must be ―a period of rest,‖ not a period of work. (Id. at p. 21.)
    But because a bare requirement to carry a radio, phone, pager, or other
    communications device in case of emergency does not constitute ―work‖ in any
    relevant sense of the term, I respectfully disagree that such ―on call‖
    requirements, without more, are incompatible with an employer‘s obligation to
    provide off-duty rest periods under California law. (Id. at pp. 15–20.) To the
    extent the majority believes that the specific on-call policy at issue in this case
    imposed greater demands on the members of the plaintiff class (see 
    id. at pp.
    15–
    17), the record does not support that contention.
    We are asked in this case to rule on the validity of a $90 million judgment
    against ABM Security Services, Inc. (ABM), based on the trial court‘s
    determination that ABM deprived its security guards of the rest periods to which
    they were entitled by maintaining a uniform policy of requiring all of its guards to
    remain on call during their breaks. Because the term ―on call‖ has no particular
    fixed meaning, we should be clear about what, precisely, ABM‘s policy entailed.
    The trial court concluded, based on the deposition testimony of an ABM senior
    1
    branch manager, that ABM‘s policies ―make all rest breaks subject to interruption
    in case of an emergency or in case a guard is needed (for example, when a tenant
    needs an escort to the parking lot . . . .) Because a guard must be available for
    these situations, guards must keep their cell phones or pagers on.‖ ABM contends
    that the deposition testimony in question concerned only a particular subset of its
    guards — those employed at sites where they were the only guards on duty, a
    group for whom ABM had earlier sought and received a rest break exemption
    from the Division of Labor Standards Enforcement (DLSE) — and not all the
    members of the plaintiff class. But as the Court of Appeal in this case noted,
    ABM also admitted in discovery that, as a general rule, its ― ‗[g]uards simply
    must keep their radios or pagers on in case an emergency — fire, flood, criminal
    activity, medical crisis or bomb threat — should arise to ensure the safety of the
    facility and its tenants.‘ ‖ ABM‘s senior branch manager, moreover, testified that
    even at multiple-guard sites, ―[i]f the magnitude of the emergency was large
    enough, all security officers would be required to respond.‖ ABM contends that
    this, too, is an overstatement, pointing to record evidence that at least some of its
    guards left their radios behind while on break. But the trial court rejected the
    argument, reasoning that this evidence was not inconsistent with the conclusion
    that all ABM employees were on call during their rest periods, since ―[t]here are
    many alternatives to the radio for hailing a person back to work: cell phone,
    pager, fetching, hailing, and so on.‖
    In short, although the parties continue to debate the particulars, the
    judgment in this case rests on a conclusion that ABM had a uniform policy of
    requiring all of its guards, at single- and multiple-guard sites alike, to carry a
    communications device or otherwise remain reachable in case of emergency (or,
    at least at some sites, in case certain other nonemergent needs arose). But
    2
    importantly, the record contains no evidence that the rest period of any member of
    the plaintiff class was ever actually interrupted by a call to return to duty. Nor
    does the record contain any evidence concerning how quickly guards were
    expected to respond if such a call came or to what, if any, discipline a guard might
    be subject for failing to respond before his or her break period expired. Finally,
    the undisputed evidence shows that if any guard‘s rest period was, in fact,
    interrupted, he or she would have been permitted to take a full rest period after the
    situation was resolved.
    The question before us thus boils down to whether ABM‘s requirement
    that its guards carry a communications device or otherwise remain reachable in
    case of emergency, standing alone, is incompatible with its legal obligation to
    provide a rest period that is, as the majority says, a ―period of rest.‖ Under IWC
    Wage Order 4, subdivision 12(A), which applies to persons employed in various
    occupations, including security guards, every employer must ―authorize and
    permit all employees to take rest periods . . . . Authorized rest period time shall
    be counted as hours worked for which there shall be no deduction from wages.‖
    First promulgated in 1932 to protect the health and safety of California‘s workers,
    the rest period requirement has remained largely unchanged since. (See Murphy
    v. Kenneth Cole Productions, Inc. (2007) 
    40 Cal. 4th 1094
    , 1105; 
    id. at p.
    1113
    [―Employees denied their rest and meal periods face greater risk of work-related
    accidents and increased stress, especially low-wage workers who often perform
    manual labor.‖].) In 2000, the Legislature reinforced the requirement by enacting
    Labor Code section 226.7, which currently provides, in relevant part: ―An
    employer shall not require an employee to work during a meal or rest or recovery
    period mandated‖ by an IWC wage order, or else the employer must pay the
    employee an additional hour‘s wage. (Lab. Code, § 226.7, subds. (b) & (c).)
    3
    Neither of these provisions specifies what a rest period must consist of,
    other than that it must be what it sounds like: that is, a period during which the
    employee is not required ―to work.‖ (Lab. Code, § 226.7, subd. (b).) As we have
    recognized, determining whether an employee has been required to ―work‖ during
    a particular period for purposes of the wage-and-hour laws often, and necessarily,
    depends on a fact-specific inquiry into the nature of the relevant employment
    arrangement. (See, e.g., Mendiola v. CPS Security Solutions, Inc. (2015) 
    60 Cal. 4th 833
    , 840–841 (Mendiola); Brinker Restaurant Corp. v. Superior Court
    (2012) 
    53 Cal. 4th 1004
    , 1040 (Brinker) [what will satisfy an employer‘s
    obligation to provide meal breaks ―may vary from industry to industry,‖ and ―the
    full range of approaches that in each instance might be sufficient to satisfy the
    law‖ cannot be determined in a single proceeding].) To determine whether on-
    call time constitutes work for which an employee must be paid, for example, our
    cases have focused on the level of control the employer exercises over its
    employees during that time and whether that level of control prevents employees
    from using the time effectively for their own purposes, identifying several case-
    specific factors that inform that inquiry. (See Mendiola, at pp. 840–842 [security
    guards‘ on-call time was compensable when the guards were required to reside on
    site and respond, immediately and in uniform, if contacted by a dispatcher]; cf.
    Morillion v. Royal Packing Co. (2000) 
    22 Cal. 4th 575
    , 583, 587–588 [time spent
    commuting was compensable when the employer required employees to take
    employer-provided buses; unlike normal commuting time, the employer
    compelled and controlled this travel time and prevented employees from using the
    time for their own purposes].) In Brinker, we took a similar approach to
    evaluating whether an employee has been required to work during a meal period,
    rendering it an on-duty meal period for which the employee must be paid.
    4
    (Brinker, at pp. 1035–1041.) We agreed with the DLSE that a meal period is not
    spent on duty — and is therefore not compensable — if employees are free to
    leave the employer‘s premises, are relieved of duty, and are permitted to attend to
    personal business during the meal period. (Id. at p. 1036; see also Madera Police
    Officers Assn. v. City of Madera (1984) 
    36 Cal. 3d 403
    , 412–413 (Madera Police)
    [police officers‘ meal time was compensable when officers faced disciplinary
    action if they did not respond to citizen complaints during meal breaks]; Bono
    Enterprises, Inc. v. Bradshaw (1995) 
    32 Cal. App. 4th 968
    , 974–975 [meal periods
    were spent on duty because the employer required employees to remain at the
    worksite during meal periods].)
    Under this approach, which focuses on whether the employer has imposed
    restrictions that interfere with the employee‘s ability to use the time for his or her
    own purposes, some on-call arrangements will amount to work for purposes of the
    wage-and-hour laws, while others will not. Thus, as plaintiffs say in their briefs,
    ―a doctor who can have dinner at a restaurant while carrying a pager‖ is not
    ―working‖ under any generally accepted understanding of the term, even though
    there is always a possibility that his or her meal will be interrupted by a call. (See
    Gomez v. Lincare, Inc. (2009) 
    173 Cal. App. 4th 508
    , 522–523 [requirement to
    wear a pager, combined with other restrictions, did not render on-call time
    compensable]; cf. Madera 
    Police, supra
    , 36 Cal.3d at pp. 411–412 [contrasting
    compensable meal time with noncompensable on-call time].) Indeed, courts have
    recognized that the ability to wear a pager may actually ―ease restrictions‖ on an
    employee, and is thus a factor that generally weighs against treating on-call time
    as ―hours worked‖ for which the employee must be paid. 
    (Mendiola, supra
    , 60
    Cal.4th at p. 841.) On the other hand, an employee required to remain at or near a
    workstation and to provide an instantaneous response in the event of a call
    5
    remains subject to a degree of employer control that is incompatible with the
    employee‘s ability to use the time for his or her own purposes, including to attend
    to his or her own health and safety needs. Without more, however, a requirement
    that employees remain reachable (by portable communications device or
    otherwise) is not ―work‖ for purposes of the wage-and-hour laws.
    This is not only the conclusion that follows from our cases, it is also the
    conclusion of the agency charged with the enforcement of the wage-and-hour
    laws. (See 
    Brinker, supra
    , 53 Cal.4th at p. 1029, fn. 11 [the DLSE‘s opinion
    letters ― ‗ ― ‗ ―constitute a body of experience and informed judgment‖ ‘ ‖ ‘ ‖ to
    which we have frequently turned for guidance in interpreting IWC wage orders].)
    Although the majority relies on the DLSE‘s opinion letters as support for the
    proposition that rest periods, like meal periods, must be ―duty free‖ (maj. opn.,
    ante, at pp. 12–13), it curiously neglects the DLSE‘s view that an employee
    required to carry a pager has enjoyed a ―duty free‖ meal period unless he or she
    ―is called upon to respond to the pager.‖ (Dept. Industrial Relations, DLSE Opn.
    Letter No. 1992.01.28 (Jan. 28, 1992) p. 4 (DLSE 1992 Letter); see 
    id. at p.
    3 [―If
    the employee is simply required to wear a pager or respond to an in-house pager
    during the meal period there is no presumption that the employee is under the
    direction or control of the employer so long as no other condition is put upon the
    employee‘s conduct during the meal period.‖]; accord, Dept. Industrial Relations,
    DLSE Opn. Letter No. 1996.07.12 (July 12, 1996) p. 2; see also Dept. Industrial
    Relations, DLSE Opn. Letter No. 1998.12.28 (Dec. 28, 1998) p. 4 [―Of course,
    the simple requirement that the employee wear a beeper and respond to calls,
    without more, is not so inherently intrusive as to require a finding that the
    6
    employee is subject to the employer‘s control so as to require the employee be
    paid for all hours the beeper is worn.‖].)1
    In a marked departure from the approach we have taken in prior cases
    concerning whether on-call time counts as work, and in sharp contrast to the
    DLSE‘s views about what constitutes a duty-free break, the majority in this case
    appears to conclude that a requirement to remain reachable by pager, phone, or
    other portable communications device, without more, is inherently incompatible
    with the requirement to provide a duty-free rest period — even if the pager never
    sounds or the phone never rings. Given the ―practical realities of rest periods,‖
    the majority reasons (maj. opn., ante, at p. 15), such a requirement is
    ―irreconcilable with employees‘ retention of freedom to use rest periods for their
    own purposes‖ and represents a ―broad and intrusive degree of control‖ over how
    employees spend their time. (Id. at p. 16‒17.) The majority asserts: ―An
    employee on call cannot take a brief walk — five minutes out, five minutes
    back — if at the farthest extent of the walk he or she is not in a position to
    respond. Employees similarly cannot use their 10 minutes to take care of other
    personal matters that require truly uninterrupted time — like pumping breast milk
    [citation] or completing a phone call to arrange child care.‖ (Id. at p. 17.)
    1      If the majority means to suggest that Brinker‘s adoption of a ―relieved of
    all duty‖ standard for unpaid meal periods somehow renders the DLSE 1992
    Letter irrelevant to the inquiry now before us (see maj. opn., ante, p. 13, fn. 11), it
    bears mention that the ―relieved of all duty‖ standard did not originate from our
    opinion in Brinker, but from the text of the very same IWC wage orders that the
    DLSE interpreted in the 1992 letter. (See DLSE 1992 Letter at pp. 3–4.) Nothing
    in Brinker calls into question the DLSE‘s conclusion that an employee required to
    carry a pager during a meal period has enjoyed a duty-free meal period unless he
    or she is called to respond to the pager.
    7
    If all on-call policies necessarily had these effects, I might well agree that
    on-call rest breaks are categorically impermissible, as the majority‘s reasoning
    suggests. But there is no reason to believe that the bare requirement to carry a
    radio, phone, or pager necessarily prevents employees from taking brief walks,
    making phone calls, or otherwise using their rest breaks for their own purposes,
    and certainly there is no evidence in this record to that effect. The record, rather,
    shows the opposite: Members of the plaintiff class did use their rest periods to
    walk to various nearby destinations and to engage in other leisure activities such
    as smoking, reading, and surfing the Internet. Nor does the record contain
    evidence that employees were prevented from using their 10-minute breaks to
    take care of personal matters that required uninterrupted time — perhaps
    unsurprisingly, given that the record contains no evidence that any employee‘s
    break was ever interrupted. This evidence, or lack thereof, may not be entirely
    dispositive of the case before us, but it certainly dispels any notion that the nature
    of an on-call rest period arrangement is by its very nature ―irreconcilable‖ with
    the obligation to provide a period of rest that an employee may use effectively for
    his or her own purposes.2
    2      It is true that IWC wage order No. 5-2001 (Cal. Code Regs., tit. 8, § 11050
    (Wage Order 5)), unlike Wage Order 4, expressly ―allows, in limited
    circumstances, employers to require employees to take on-call rest periods.‖
    (Maj. opn., ante, at pp. 19–20.) Specifically, Wage Order 5, subdivision 12(C),
    permits certain residential care facilities, without penalty, to ―require an employee
    to remain on the premises and maintain general supervision of residents during
    rest periods if the employee is in sole charge of residents.‖ Absent this provision,
    a policy requiring employees to remain on site and maintain general supervision
    of residents during rest breaks would be plainly incompatible with the employer‘s
    obligation to relieve employees of all duties during rest breaks. Unlike the
    majority, I do not understand this special exception to imply that on-call rest
    break policies that are less intrusive than those specifically allowed by Wage
    Order 5, subdivision 12(C), are categorically prohibited by Wage Order 4.
    8
    The best that can be said for this kind of categorical approach to on-call
    rest breaks is that by employing a conclusive (if factually unsupported)
    assumption that on-call rest period policies inherently subject an employee to
    ―broad and intrusive‖ employer control, the majority‘s rule prevents employers
    from abusing on-call policies by regularly interrupting off-duty employees with
    calls to perform their job duties. But this is a solution in search of a problem. No
    one disputes that an employer that regularly interrupts its employees with
    demands requiring their immediate attention has, in fact, required its employees to
    work. (Cf., e.g., 
    Mendiola, supra
    , 60 Cal.4th at p. 841 [―whether the frequency of
    calls was unduly restrictive‖ is a factor in determining whether on-call time is
    compensable]; Ruffin v. MotorCity Casino (6th Cir. 2015) 
    775 F.3d 807
    , 813 [in
    determining whether an on-call employee has been required to work through a
    meal break, a ―factor to consider is whether the employer‘s business regularly
    interrupts the employee‘s meal period‖].) On the other hand, as the majority must
    acknowledge, this categorical approach has heavy costs. The majority seeks to
    reassure employers that they may, at least in cases of genuine emergency, recall
    an employee from his or her rest break, as long as they reschedule the break or
    pay the employee premium pay (maj. opn., ante, at pp. 18–19 & fn. 14). But the
    practical effect of a categorical ban on requiring an employee to carry a pager or
    other portable communications device is to deprive the employer of any sure
    means of reaching the employee, even if a truly extraordinary situation requires it.
    Such a categorical rule thereby secures a benefit that many employees would not
    regard as particularly significant — the ability to leave a silent pager or phone
    behind for 10 minutes at a time — at the substantial cost of denying employers of
    the means to contact their employees in case of urgent need.
    9
    But perhaps the majority does not mean to craft a rule as categorical as its
    opinion sounds. Further seeking to assuage concerns about the practical
    implications of the ruling, the majority tells us that this case concerns only
    ―whether employees can be forced to shoulder an affirmative responsibility to
    remain on call, vigilant, and at the ready during their rest periods.‖ (Maj. opn.,
    ante, at p. 18.) But if the purported requirements to remain ―vigilant‖ and ―at the
    ready‖ are what pushes ABM‘s on-call policy over the line, then we ought to at
    least be clear about what those terms mean, to whom these requirements apply,
    and, most importantly, to what extent the requirements interfered with plaintiffs‘
    ability to use rest periods for their own purposes.3 The terms ―vigilant‖ and ―at
    the ready,‖ like the term ―on call,‖ have no particular fixed meaning; they have
    been used to describe a wide variety of employment-related requirements.
    (Compare Bobo v. U.S. (1997) 
    37 Fed. Cl. 690
    , 690–691, 698–703 [border patrol
    agent‘s ―constant state of vigilance while commuting‖ did not convert commuting
    time into compensable work] with Pellino v. Brink’s Inc. (Wash.Ct.App. 2011)
    
    267 P.3d 383
    , 393–394 & fn. 8 [armored car guards were compelled to remain
    vigilant during breaks, which required ― ‗active observation and mental exertion
    at all times,‘ ‖ and deprived guards of lawful rest periods].) It is, moreover,
    unclear to whom these requirements might have applied. The notion that ABM‘s
    policy required its guards to remain ―vigilant‖ and ―at the ready‖ during their rest
    3       Of course, I agree with the majority that where an employee‘s rest break is
    actually interrupted by the employer, the employer owes the employee a full,
    uninterrupted rest break or premium pay. (See maj. opn., ante, at pp. 18–19; Lab.
    Code, § 226.7, subd. (c); Wage Order 4, subd. 12(B).) In evaluating the on-call
    policy at issue here, the key question is whether the existence of the policy, apart
    from any actual interruption, prevented the employee from using rest breaks for
    his or her own purposes.
    10
    periods seems to have originated in the portion of the Court of Appeal opinion
    summarizing a discovery admission by ABM and the deposition testimony of
    ABM‘s senior branch manager that guards were expected to remain reachable in
    case a guard was needed, whether in an emergency or nonemergency situation.
    As noted above, ABM contends this testimony related specifically to guards at
    single-guard sites for which it had earlier sought a rest break exemption from the
    DLSE. The Court of Appeal‘s opinion did not refute the point, but simply
    considered it irrelevant, because, in its view, the evidence supported the
    conclusion that all guards, including those at multiple-guard sites, would be
    expected to remain reachable in the event of an emergency of sufficient
    magnitude.4 And as noted, it was this requirement to remain reachable, standing
    4        Plaintiffs argue that ABM has acquiesced in the Court of Appeal‘s
    statement that ―ABM admitted it requires its security guards to keep their radios
    and pagers on during rest breaks, to remain vigilant, and to respond when needs
    arise‖ because it did not call any misstatement to the Court of Appeal‘s attention
    by way of a petition for rehearing. (See Cal. Rules of Court, rule 8.500(c).) But
    the Court of Appeal‘s opinion also described what that meant. In a portion of its
    decision not at issue here, the Court of Appeal upheld the trial court‘s class
    certification determination because it ―could reasonably conclude ABM possessed
    a uniform policy of requiring its security guards to remain on call during their rest
    breaks.‖ As support, the Court of Appeal cited only ABM‘s admission that
    ― ‗[g]uards simply must keep their radios or pagers on in case an emergency —
    fire, flood, criminal activity, medical crisis or bomb threat — should arise to
    ensure the safety of the facility and its tenants‘ ‖ and the deposition testimony that
    ―[i]f the magnitude of the emergency was large enough, all security officers
    would be required to respond regardless of what they were doing at the time.‖
    That is, the only classwide policy the Court of Appeal identified as supporting the
    trial court‘s classwide damages award was a policy requiring guards to carry a
    communications device and respond in case of emergency. (Moreover, as noted
    in fn. 5, post, the Court of Appeal acknowledged ABM‘s argument that it did not
    uniformly apply its on-call policy.) We should not read too much into the Court
    of Appeal‘s casual characterization of this policy as one requiring guards to be
    ―vigilant,‖ particularly when the Court of Appeal‘s opinion neither explained
    (footnote continued on next page)
    11
    alone, on which the trial court determined that ABM was liable to the entire
    plaintiff class; the trial court ruled the mere possibility that a guard could be
    recalled from break served to invalidate all rest periods provided, even in the
    absence of evidence that guards‘ breaks were ever interrupted or that ABM‘s on-
    call policy prevented guards from using their rest breaks for their own purposes.
    If the majority believes that there was something more to ABM‘s policies — that
    ABM imposed some greater burdens on the guards‘ use of their rest breaks —
    then the appropriate course would be to remand for consideration of that issue in
    light of any appropriate factual development, rather than making unsupported
    assumptions about the state of the record based on vague language used in an
    excerpt of the Court of Appeal‘s opinion.
    Ultimately, as this case currently stands, we simply do not have enough
    information to conclude that the particular on-call policy at issue in this case
    prevented members of the plaintiff class from using their rest breaks for their own
    purposes. The information we do have suggests the opposite. Thus, while I agree
    with the majority that an employer must relieve employees of their duties during
    rest breaks, I see no adequate basis for upholding a $90 million judgment that was
    premised on the incorrect assumption that a person who is ―on call‖ — that is,
    who has been required to carry a radio, pager, or phone, or to otherwise remain
    reachable in case of emergency — is necessarily also ―on duty.‖ We should
    instead reverse and remand for consideration of whether ABM‘s on-call policy
    (footnote continued from previous page)
    what it meant by the term nor appeared to understand the vigilance requirement as
    the basis for the trial court‘s finding of classwide liability.
    12
    actually interfered with its employees‘ ability to use their rest periods as periods
    of rest.5
    KRUGER, J.
    I CONCUR:
    CORRIGAN, J.
    5       Setting aside, for the moment, my disagreement with the majority on this
    point, I would note that the Court of Appeal recognized that ABM had cited
    substantial evidence indicating that its on-call policy was not uniformly applied,
    but concluded that ―such evidence would go only to the issue of damages.‖ In
    other words, if the Court of Appeal had upheld the trial court‘s ruling finding
    ABM liable for damages — it, of course, did not — it nonetheless would have
    reversed the trial court‘s grant of summary judgment because the trial court‘s
    damages award was premised on the legal invalidity of all rest breaks taken by
    members of the plaintiff class. Nothing in today‘s opinion calls into question that
    part of the Court of Appeal‘s decision. Thus, ABM should, at a minimum, have
    the opportunity to mitigate its damages by showing it did not uniformly apply a
    noncompliant rest break policy.
    13
    See last page for addresses and telephone numbers for counsel who argued in Supreme Court.
    Name of Opinion Augustus v. ABM Security Services, Inc.
    __________________________________________________________________________________
    Unpublished Opinion
    Original Appeal
    Original Proceeding
    Review Granted XXX 
    233 Cal. App. 4th 1065
    Rehearing Granted
    __________________________________________________________________________________
    Opinion No. S224853
    Date Filed: December 22, 2016
    __________________________________________________________________________________
    Court: Superior
    County: Los Angeles
    Judge: Carolyn B. Kuhl and John Shepard Wiley, Jr.
    __________________________________________________________________________________
    Counsel:
    Gibson, Dunn & Crutcher, Theodore J. Boutrous, Jr., Theane Evangelis, Andrew G. Pappas, Bradley J.
    Hamburger; Littler Mendelson, Keith A. Jacoby and Dominic J. Messiha for Defendant and Appellant.
    Seyfarth Shaw, Jeffrey A. Berman, James M. Harris and Kiran A. Seldon for Employers Group as Amicus
    Curiae on behalf of Defendant and Appellant.
    Paul Hastings and Paul Grossman for California Employment Law Council as Amicus Curiae on behalf of
    Defendant and Appellant.
    Carothers DiSante & Freudenberger and Robin E. Largent for National Association of Security Companies
    as Amicus Curiae on behalf of Defendant and Appellant.
    Thompson & Knight and David R. Ongaro as Amici Curiae on behalf of Defendant and Appellant.
    Horvitz & Levy, John A. Taylor, Jr., Robert H. Wright, Felix Shafir and Shane H. McKenzie for Chamber
    of Commerce of the United States of America and National Association of Manufacturers as Amici Curiae
    on behalf of Defendant and Appellant.
    Shaw Valenza and D. Gregory Valenza for California Chamber of Commerce and California Building
    Industry Association as Amici Curiae on behalf of Defendant and Appellant.
    Ogletree, Deakins, Nash, Smoak & Stewart, Robert A. Jones, Robert R. Roginson and Kathleen J. Choi for
    National Armored Car Association and Independent Armored Car Operators Association, Inc., as Amici
    Curiae on behalf of Defendant and Appellant.
    Roxborough, Pomerance, Nye & Adreani, Drew E. Pomerance, Michael B Adreani, Marina N. Vitek; The
    Ehrlich Law Firm, Jeffrey Isaac Ehrlich; Initiative Legal Group, Monica Balderrama, G. Arthur Meneses;
    Scott Cole & Associates, Scott Edward Cole, Matthew R. Bainer; Law Offices of Alvin L Pittman and
    Alvin L. Pittman for Plaintiffs and Respondents.
    Page 2 – S0224853 – counsel continued
    Counsel:
    Law Offices of Louis Benowitz and Louis Benowitz for California Employment Lawyers Association as
    Amicus Curiae on behalf of Plaintiffs and Respondents.
    The Turley Law Firm, William Turley and David T. Mara for Consumer Attorneys of California as
    Amicus Curiae on behalf of Plaintiffs and Respondents.
    Hina B. Shah for Women‘s Employment Rights Clinic of Golden Gate University School of Law, Asian
    Americans Advancing Justice-Asian Law Caucus, Asian Americans Advancing Justice-Los Angeles,
    Centro Legal de La Raza, Chinese Progressive Association, Legal Aid Society-Employment Law Center,
    National Employment Law Project, National Lawyers Guild-Labor and Employment Committee, San
    Francisco Progressive Workers Alliance, Wage Justice Center and Worksafe, Inc., as Amici Curiae on
    behalf of Plaintiffs and Respondents.
    Counsel who argued in Supreme Court (not intended for publication with opinion):
    Theodore J. Boutrous, Jr.
    Gibson, Dunn & Crutcher
    333 South Grand Avenue
    Los Angeles, CA 90071
    (213) 229-7000
    Drew E. Pomerance
    Roxborough, Pomerance, Nye & Adreani
    5820 Canoga Avenue, Suite 250
    Woodland Hills, CA 91367
    (818) 992-9999