Mendoza v. Fonseca McElroy Grinding Co., Inc. ( 2021 )


Menu:
  •          IN THE SUPREME COURT OF
    CALIFORNIA
    LEOPOLDO PENA MENDOZA et al.,
    Plaintiffs and Appellants,
    v.
    FONSECA MCELROY GRINDING CO., INC., et al.,
    Defendants and Respondents.
    S253574
    Ninth Circuit
    17-15221
    Northern District of California
    3:15-cv-05143-WHO
    August 16, 2021
    Justice Corrigan authored the opinion of the Court, in which
    Chief Justice Cantil-Sakauye and Justices Kruger, Groban,
    and Jenkins concurred.
    Justice Cuéllar filed a dissenting opinion, in which Justice Liu
    concurred.
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    S253574
    Opinion of the Court by Corrigan, J.
    California’s Labor Code requires that certain kinds of jobs
    performed on a public works project be compensated at a per
    diem rate no less than the prevailing wage paid in the area
    where the work is done. (Lab. Code,1 § 1771.) The Labor Code
    delineates with specificity the kinds of “public work” covered by
    the prevailing wage statutes. (See §§ 1720–1720.9.)
    The question here is whether the prevailing wage must be
    paid for plaintiffs’ mobilization work, which involved
    transporting heavy machinery to and from a public works site.
    It is undisputed that operation of the machinery at the site
    qualifies as “public work.” However, plaintiffs do not contend
    that mobilization is “public work” as that term is defined in the
    applicable statutes. Instead, they argue that, under Labor Code
    section 1772, they are “deemed to be employed upon public
    work” because their mobilization work was performed “in the
    execution” of a public works contract. Plaintiffs urge an
    interpretation of section 1772 that would enlarge the scope of
    the prevailing wage law to encompass activities that the
    Legislature has not otherwise defined as public work.
    This expansive interpretation is unsupported by either the
    statutory language or legislative history. Section 1772 was not
    intended to define or expand the categories of work covered by
    1
    Further unspecified section references are to the Labor Code.
    1
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    the prevailing wage law. As a result, plaintiffs’ reliance on that
    statute is misplaced.2
    I. BACKGROUND
    Defendants are a roadwork construction company and its
    successor, which work on both public and private projects. Part
    of the road construction process involves using milling
    equipment to break up existing roadbeds so that new roads can
    be built. Plaintiffs are unionized engineers who operate the
    equipment. Sometimes the heavy milling machines are not kept
    at the job site but are stored instead at a permanent yard or
    other offsite location. In such cases, plaintiffs report to the
    offsite location, load the equipment onto trailers, and bring it to
    the job site.       This preparatory activity and equipment
    transportation is known as mobilization.3
    A master agreement between defendants and plaintiffs’
    union established wage rates for onsite construction. A separate
    memorandum of agreement (memorandum) set a lower wage
    rate for mobilization. When assigned to public works projects,
    plaintiffs here were paid according to the master agreement and
    memorandum, receiving the prevailing wage for onsite work and
    the lesser memorandum rate for mobilization.
    2
    To be clear, although we conclude that section 1772, standing
    alone, does not afford coverage for mobilization, we do not hold
    more broadly that mobilization necessarily falls outside the
    scope of the prevailing wage law’s protections. (See post, at pp.
    33–34.)
    3
    More specifically, mobilization entails: loading the milling
    machines onto a trailer; securing the equipment; checking light,
    brake, and fluid levels of the truck transporting the trailer;
    driving to the construction site; and returning the truck and
    trailer to the storage yard.
    2
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    Plaintiffs sued in federal court alleging, inter alia, failure
    to pay the prevailing wage for mobilization done in connection
    with public works projects. The parties filed cross-motions for
    partial summary judgment limited to whether mobilization fell
    under the prevailing wage law. The district court ruled for
    defendants, concluding that mobilization was not covered by
    prevailing wage protection.
    After all remaining issues were settled, plaintiffs appealed
    the mobilization decision to the United States Court of Appeals
    for the Ninth Circuit. The sole issue raised was “whether
    transporting heavy equipment to be used on public works
    construction is [done] ‘in the execution of the contract’ under
    California Labor Code section 1772.” We accepted the Ninth
    Circuit’s request4 to decide whether the mobilization activity
    was covered by section 1772.5
    II. DISCUSSION
    A.    Prevailing Wage Law Overview
    California’s prevailing wage law was enacted in 1931 as
    an uncodified measure. (1931 Act; Stats. 1931, ch. 397, §§ 1–6,
    pp. 910–912.) Its federal counterpart, the Davis-Bacon Act (
    40 U.S.C. § 3141
     et seq.), was enacted the same year but is not
    4
    Cal. Rules of Court, rule 8.548(a).
    5
    The Ninth Circuit framed the question as follows: “Is
    operating engineers’ offsite ‘mobilization work’ — including the
    transportation to and from a public works site of roadwork
    grinding equipment — performed ‘in the execution of [a]
    contract for public work,’ [section 1772], such that it entitles
    workers to ‘not less than the general prevailing rate of per diem
    wages for work of a similar character in the locality in which the
    public work is performed’ pursuant to section 1771 of the
    California Labor Code?”
    3
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    completely coextensive with California's version of the law.
    (Kaanaana v. Barrett Business Services, Inc. (2021) 
    11 Cal.5th 158
    , 165 (Kaanaana).) State and federal prevailing wage laws
    “responded to the dire economic conditions of the Great
    Depression, when private construction diminished severely and
    ‘the oversupply of labor was exploited by unscrupulous
    contractors to win government contracts . . . .’ ” (Kaanaana, at
    pp. 165–166; see Universities Research Assn. v. Coutu (1981) 
    450 U.S. 754
    , 773–774.)
    The prevailing wage law is a minimum wage provision
    whose overall purpose is “to protect and benefit employees on
    public works projects.” (Lusardi Construction Co. v. Aubry
    (1992) 
    1 Cal.4th 976
    , 985 (Lusardi).) “This general objective
    subsumes within it a number of specific goals: to protect
    employees from substandard wages that might be paid if
    contractors could recruit labor from distant cheap-labor areas;
    to permit union contractors to compete with nonunion
    contractors; to benefit the public through the superior efficiency
    of well-paid employees; and to compensate nonpublic employees
    with higher wages for the absence of job security and
    employment benefits enjoyed by public employees.” (Id. at
    p. 987.) Courts liberally construe the law to fulfill its purpose.
    (City of Long Beach v. Department of Industrial Relations (2004)
    
    34 Cal.4th 942
    , 949–950.)
    Those employed on “public works” must generally be paid
    at least the “prevailing rate of per diem wages for work of a
    similar character” in the area. (§ 1771.) Under the current
    statutory scheme, the prevailing wage law does not apply to
    work done by a public agency with its own labor force. (Ibid.)
    As we will discuss at some length, this statutory exclusion for
    4
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    government workers was not always in place. (See post, at pp.
    10–20.)
    A contractor or subcontractor that does not pay the
    prevailing wage rate on a public works project is liable for the
    deficiency and subject to a penalty. (§ 1775, subd. (a).) The
    statutory payment obligation is independent of any contractual
    requirement. (Lusardi, 
    supra,
     1 Cal.4th at pp. 981–982.) For
    that reason, the fact that the parties’ memorandum provides
    lesser pay for mobilization does not settle the question here. If
    the statutory scheme requires payment of the prevailing wage
    for a particular type of labor, it is irrelevant that the parties may
    have agreed to a lesser amount.
    The prevailing wage law describes with particularity the
    kind of “public works” that fall within its scope.6 Since the law’s
    adoption in 1931, it has encompassed certain “construction or
    repair work.” (Stats. 1931, ch. 397, § 4, p. 912.) Over the years,
    the statutory definition of “public works” has been amended to
    clarify and expand the scope of the activities it embraces. As
    applicable here, section 1720, subdivision (a)(1) (hereafter
    section 1720(a)(1)) currently defines “public works” as
    “[c]onstruction, alteration, demolition, installation, or repair
    work done under contract and paid for in whole or in part out of
    public funds . . . .”7    Other provisions of section 1720,
    6
    The prevailing wage law uses the plural term “public works”
    as well as the singular term “public work.” (See §§ 1720, subd.
    (a)(1) & (2), 1770, 1771, 1772.)          We use the terms
    interchangeably.
    7
    Although plaintiffs apparently did mobilization work on both
    public and private construction projects, we are concerned here
    only with work done under contract paid for in whole or in part
    with public funds.
    5
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    subdivision (a) not involved here provide additional definitions
    of “public works” in different contexts like street and sewer work
    (subd. (a)(3)), carpet laying (subd. (a)(4) & (5)), and tree removal
    (subd. (a)(8)). Still other definitions of “public works” are
    contained in additional statutes. (§§ 1720.2–1720.9.)
    Plaintiffs’ operation of milling machines at the job site
    clearly constitutes “public work” under section 1720(a)(1)
    because it involved “[c]onstruction, alteration, demolition,
    installation, or repair work,” and all the labor engaged in here
    was “done under contract and paid for in whole or in part out of
    public funds . . . .” But here we are concerned with mobilization,
    not onsite machine operation. Plaintiffs do not argue that
    mobilization fits within one of the definitions of “public works”
    in the prevailing wage law. Instead, they rely on section 1772,
    which derives from a provision in the uncodified 1931 Act. (See
    Stats. 1931, ch. 397, § 1, p. 910.) That section currently reads:
    “Workers employed by contractors or subcontractors in the
    execution of any contract for public work are deemed to be
    employed upon public work.” (§ 1772.) Plaintiffs claim their
    entitlement to the prevailing wage for offsite mobilization flows
    from this “deeming” provision.
    This court has not previously interpreted section 1772. As
    discussed in more detail below, in recent decades a number of
    lower courts have concluded that section 1772 applies to tasks
    that are “ ‘ “an integrated aspect of the ‘flow’ process of
    construction.” ’ ” (Williams v. SnSands Corp. (2007) 
    156 Cal.App.4th 742
    , 753 (Williams); see Sheet Metal Workers’
    Internat. Assn., Local 104 v. Duncan (2014) 
    229 Cal.App.4th 192
    , 205–206 (Sheet Metal).) In effect, the framework adopted
    by these cases extends the coverage of the prevailing wage law
    to activities not statutorily defined as “public work,” so long as
    6
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    that labor is integrated into construction or other defined public
    work. Over the years that interpretation led to controversy as
    to just what it meant for labor to be integrated into “the ‘flow’
    process of construction” (Williams, at p. 753) and so to qualify
    as part of the “execution of [a] contract for public work” (§ 1772).
    The federal district court applied the “integrated aspect” test
    (Williams, at p. 753) but sided with defendants, concluding that
    mobilization is independent of, rather than integrated into, the
    construction work performed by plaintiffs at the public works
    site.
    Before considering the interpretation of section 1772
    adopted in recent lower court cases, we examine the section’s
    meaning anew, focusing first on its language and then on its
    legislative history.
    B.    Section 1772
    Familiar principles guide our interpretation.            Our
    fundamental task is to determine the legislative intent and
    effectuate the law’s purpose, giving the statutory language its
    plain and commonsense meaning. We examine that language,
    not in isolation, but in the context of the statutory framework as
    a whole to discern its scope and to harmonize various parts of
    the enactment. (Coalition of Concerned Communities, Inc. v.
    City of Los Angeles (2004) 
    34 Cal.4th 733
    , 737.) “If the language
    is clear, courts must generally follow its plain meaning unless a
    literal interpretation would result in absurd consequences the
    Legislature did not intend. If the statutory language permits
    more than one reasonable interpretation, courts may consider
    other aids, such as the statute’s purpose, legislative history, and
    public policy.” (Ibid.)
    7
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    The operative language of section 1772 has remained
    largely unchanged since 1931, when it first appeared as part of
    the uncodified prevailing wage law.8 (Stats. 1931, ch. 397, § 1,
    p. 910.) Considering section 1772 in the context of the overall
    development of the prevailing wage law, it appears its aim was
    quite modest: to ensure that the benefits of the prevailing wage
    law extend to those employed by contractors or subcontractors.
    As noted, the obligation to pay prevailing wages does not
    now apply to work carried out by a governmental entity’s own
    labor force. Before the adoption of a statute expressly setting
    forth this exclusion (§ 1771), there was a vigorous debate about
    whether the prevailing wage law as originally enacted applied
    to government workers, as we explain below. (See post, at pp.
    16–18; see generally Bishop v. City of San Jose (1969) 
    1 Cal.3d 56
     (Bishop).) One aim of the public works scheme was and is to
    protect laborers who are not part of a governmental labor force.
    (Lusardi, 
    supra,
     1 Cal.4th at p. 987.)
    A governmental entity electing not to use its own labor
    force on a public works project could, conceivably, contract
    individually with outside workers to perform the required tasks.
    Alternatively, it could award a public works contract to a
    contractor or subcontractor that would use those it hired to do
    the work. It appears that section 1772 was enacted to ensure
    that nongovernmental laborers were entitled to the prevailing
    wage whether they worked under a contract directly with a
    government entity, or under an agreement with a contractor or
    subcontractor awarded a public works contract. That is to say,
    these nongovernmental workers are entitled to the prevailing
    8
    See post, at pages 10 to 15.
    8
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    wage notwithstanding their employment relationship with a
    private contractor. Even though their employment agreement
    was with a private entity, they were “deemed” to be employed
    upon public work if they were engaged in the private
    contractor’s “execution of [a] contract for public work.” (§ 1772.)
    The obligation to pay prevailing wages to those employed
    on public works arises out of section 1771, which links the
    obligation to the kind of work done. Section 1772, in turn,
    clarifies that workers employed by contractors or subcontractors
    “are deemed to be employed upon public work,” so long as they
    are employed by the contractor or subcontractor in “the
    execution of any contract for public work.” Section 1774 further
    specifies that “[t]he contractor to whom the contract is awarded,
    and any subcontractor under him, shall pay not less than the
    specified prevailing rates of wages to all workmen employed in
    the execution of the contract.”        Section 1772 describes a
    category of persons entitled to the prevailing wage based on the
    work they do, while section 1774 describes who must pay them
    the prevailing wage to which they are entitled.
    The structure of the prevailing wage law tends to confirm
    this understanding. The scheme appears in division 2, part 7,
    chapter 1 of the Labor Code. Article 1 of the law, entitled “Scope
    and Operation,” defines the extent of prevailing wage coverage.
    (§§ 1720–1743.) Article 2, entitled “Wages,” addresses the
    wages to be paid to those performing work encompassed by the
    law’s defined scope. (§§ 1770–1785.) Section 1772 is found in
    article 2.9
    9
    These article enumerations and headings were included in the
    Legislature’s 1930’s codification of the Labor Code. (See Stats.
    1937, ch. 90, pp. 241–243.)
    9
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    In the case of the prevailing wage law, the subject of each
    article is consistent with its heading. Within article 1, sections
    1720 to 1720.9 describe the types of labor to which the law
    applies.10 In article 2, section 1772 focuses on the types of
    workers entitled to receive the prevailing wage when they
    perform work defined as “public work.” As we have recently
    pointed out, however, the “protections afforded by the prevailing
    wage laws only extend to activities that qualify as public work.”
    (Kaanaana, supra, 11 Cal.5th at p. 167.) Nothing in the plain
    language of section 1772 indicates it was intended to expand the
    categories of public work covered by the prevailing wage law.
    C.    The Evolving Context of Section 1772 and Its
    Continuing Vitality
    Support for this interpretation is found in the legislative
    history of section 1772. As noted, California and the federal
    government enacted prevailing wage laws during the Great
    Depression, when contractors intent on winning government
    contracts were able to exploit the oversupply of labor. (See
    Kaanaana, supra, 11 Cal.5th at pp. 165–166.)
    The current California scheme traces back to the 1931 Act.
    (Stats. 1931, ch. 397, § 1, p. 910.) Section 1 of that uncodified
    measure contained two sentences that roughly correspond to
    sections 1771 and 1772 in the current version of the prevailing
    wage law. Section 1 of the 1931 Act provided, in relevant part:
    10
    An exception to this principle is found in section 1771 (of art.
    2), which extends coverage to “contracts let for maintenance
    work.” This exception to the general structure of the prevailing
    wage law was added many decades after the scheme was
    codified as part of the Labor Code. (Stats. 1974, ch. 1202, § 1, p.
    2593.)
    10
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    “Not less than the general prevailing rate of per diem wages for
    work of a similar character in the locality in which the work is
    performed . . . shall be paid to all laborers, workmen and
    mechanics employed by or on behalf of the State of California, or
    by or on behalf of any county, city and county, city, town, district
    or other political subdivision of the said state, engaged in the
    construction of public works, exclusive of maintenance work.
    Laborers, workmen and mechanics employed by contractors or
    subcontractors in the execution of any contract or contracts for
    public works with the State of California, or any officer or public
    body thereof, [or any political subdivision], shall be deemed to be
    employed upon public works.” (Stats. 1931, ch. 397, § 1, p. 910,
    italics added.)
    The first sentence quoted above extended coverage to
    those “employed by or on behalf” of the government in
    constructing public works.11 The second sentence “deemed to be
    11
    It appears the reference to workers “employed by” the state
    and its political subdivisions signified direct employees of the
    government. While courts in two states have interpreted their
    prevailing wage laws to exclude direct governmental employees
    despite language applying the law to those employed “by or on
    behalf” of the government, they did so only because of specific
    constitutional concerns or because the provision was overridden
    by a more specific statute excluding governmental employees.
    (See Bradley v. Casey (Ill. 1953) 
    114 N.E.2d 681
    , 683; State ex
    rel. Tucker v. Div. of Labor (W.Va. 2008) 
    668 S.E.2d 217
    , 229.)
    The 1931 Act contained no provision excluding government
    workers from its scope. By contrast, a rudimentary prevailing
    wage law enacted in the 1890’s expressly excluded from its wage
    protections “persons employed regularly in any of the public
    institutions” of the state or its subdivisions. (Stats. 1897, ch. 88,
    § 1, p. 90.) That law was repealed when the 1931 Act took effect.
    (See Stats. 1931, ch. 396, § 1, p. 909; Stats. 1931, ch. 397, § 1, p.
    11
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    employed upon public works” those who work for contractors or
    subcontractors. The latter sentence, which is the predecessor of
    section 1772, appeared to clarify that prevailing wage protection
    extends not only to those employed directly by the government,
    as confirmed in the first sentence, but also to those who were
    employed by contractors or subcontractors.12
    The statutory construction used in the 1931 Act parallels
    prevailing wage legislation in other states that extended the law
    to workers “employed by or on behalf” of public entities. Indeed,
    the statutory language at issue appears in state prevailing wage
    laws adopted before the federal Davis-Bacon Act was enacted.
    In an 1891 Kansas law applied to workers “ ‘employed by or on
    behalf’ ” of the state or its political subdivisions, the legislation
    clarified that “ ‘persons employed by contractors or
    subcontractors in the execution of any contract . . . shall be
    deemed to be employed by or on behalf of’ ” the state or one of its
    political subdivisions for purposes of the law. (Johnson,
    Prevailing Wage Legislation in the States (Aug. 1961) 84:
    8 Monthly Lab. Rev. 839
    , 840, italics added.) The italicized
    provision, which could be found in other state prevailing wage
    910.) It is telling that the Legislature chose not to include a
    similar exclusion for government workers in the 1931 Act. It
    only took such action in 1974. (Stats. 1974, ch. 1202, § 1, p.
    2593.)
    12
    Although the reference in the first sentence to workers
    employed “on behalf of” governmental entities might be
    construed to extend to work done under contract, the import of
    that language could be subject to debate. (See Division of Labor
    Stand. v. Friends of Zoo (Mo. 2001) 
    38 S.W.3d 421
    , 422–424.)
    The second sentence left no doubt that the protections of the law
    extended to employees of private contractors engaged in public
    works.
    12
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    laws, was interpreted by the Arizona Supreme Court to ensure
    that those employed by private contractors receive the benefit of
    wage guarantees provided to governmental workers by deeming
    them to be public employees for purposes of the law. (See State
    v. Miser (Ariz. 1937) 
    72 P.2d 408
    , 413.)
    Some early state prevailing wage laws, like the 1931 Act,
    employed a slightly different formulation, clarifying that those
    “ ‘employed by contractors or subcontractors in the execution of
    any contract . . . for public works . . . shall be deemed to be
    employed upon public works.’ ” (Logan City v. Industrial
    Commission of Utah (Utah 1934) 
    38 P.2d 769
    , 770, italics
    added.) Whether the “deeming” conferred by different statutes
    was extended to government employment status, as in Kansas,
    or to the status of employment on a contract for public work, the
    apparent purpose was the same. Either formulation was
    designed to ensure that daily wage workers employed by private
    contractors on public works would receive the prevailing wage.
    The language that is now incorporated in section 1772 has
    no counterpart in the federal Davis-Bacon Act. (See 
    40 U.S.C. §§ 3141
    –3148.) That is not surprising. The Davis-Bacon Act by
    its plain terms has never extended to governmental
    employees.13 There was no need to clarify that workers
    13
    As originally enacted, the Davis-Bacon Act required that
    “every contract” for certain public work include a provision
    specifying that the wages paid “by the contractor or
    subcontractor on the public buildings covered by the contract”
    shall be at least the prevailing rate. (Pub. L. No. 798 (Mar. 3,
    1931) 
    46 Stat. 1494
    .) The federal statutory scheme thus only
    extended to contract work. (See also Pub. L. No. 402, § 2 (Aug.
    30, 1935) 
    49 Stat. 1011
    , 1012.) The Davis-Bacon Act continues
    to apply exclusively to work performed by contractors or
    subcontractors. (See 
    40 U.S.C. § 3141
    (a) & (c).)
    13
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    employed by private contractors received the benefits of the
    federal law because they were its only intended beneficiaries.
    But that was not the case in California, at least at the time of
    the 1931 Act. While California’s prevailing wage law is said to
    share the purposes of the federal Davis-Bacon Act (City of Long
    Beach v. Department of Industrial Relations, supra, 34 Cal.4th
    at p. 954), the statutory language adopted in the 1931 Act bears
    a closer relation to state prevailing wage laws from that period.
    When the prevailing wage law was codified in 1937,
    section 1 of the 1931 Act was split into two new sections, 1771
    and 1772. (Stats. 1937, ch. 90, p. 243.) Section 1771 provided:
    “Not less than the general prevailing rate of per diem wages for
    work of a similar character in the locality in which the public
    work is performed, and not less than the general prevailing rate
    of per diem wages for legal holiday and overtime work shall be
    paid to all workmen employed on public works, exclusive of
    maintenance work.” (Ibid.) Section 1772 provided: “Workmen
    employed by contractors or subcontractors in the execution of
    any contract for public work are deemed to be employed upon
    public work.” (Ibid.)
    Again, the original function of section 1772 appears to
    have been simply to ensure that those employed by a contractor
    or subcontractor were given the same protection as others,
    including those employed by the government itself. Prevailing
    wages were due “all workmen employed on public works”
    (former § 1771, added by Stats 1937, ch. 90, p. 243), with
    workmen employed by contractors or subcontractors “deemed to
    be employed upon public work” for the purposes of the statutory
    obligation to pay prevailing wages (former § 1772, added by
    Stats 1937, ch. 90, p. 243).
    14
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    The 1937 codification of the prevailing wage law notably
    omitted the reference to those employed “by or on behalf” of the
    state or its political subdivisions. (Compare former § 1771,
    added by Stats. 1937, ch. 90, p. 243, with Stats. 1931, ch. 397,
    § 1, p. 910.) But there is little reason to believe the omission
    reflected a legislative intent to exclude governmental workers
    from the scope of the prevailing wage law.14 Section 1771 as
    adopted in 1937 applied to all “workmen employed on public
    works,” with no exclusion for direct governmental employees.
    (Former § 1771, added by Stats. 1937, ch. 90, p. 243.) The
    explicit exclusion of prevailing wage entitlement for government
    workers was not adopted by the Legislature for nearly 40 years.
    (Stats. 1974, ch. 1202, § 1, p. 2593.)
    Because section 1772 has not been substantively amended
    since it became part of the Labor Code in 1937,15 its essential
    function as to contract work should be no different than when it
    was originally enacted: If public work is performed in the
    execution of a contract, the fact a laborer is doing that work as
    an employee of a contractor or subcontractor does not eliminate
    entitlement to prevailing wages.
    14
    The California Code Commission prepared a Proposed Labor
    Code in 1936 that recommended the codification of various labor
    statutes into a single Labor Code. Notably, the Proposed Labor
    Code contained no comment or annotation associated with
    proposed section 1771 that would indicate an intent to change
    the meaning or scope of the provision in the 1931 Act from which
    that statute was derived. (Cal. Code Com. Office, Proposed
    Labor Code (1936) p. 88.)
    15
    The sole amendment to the text enacted in 1937 was to replace
    “[w]orkmen” with “[w]orkers.” (Stats. 1992, ch. 1342, § 7,
    p. 6602.)
    15
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    The principal counterargument to this original
    understanding of section 1772 is that, at least as of today, the
    statute might be considered surplusage. Decades after section
    1772 was enacted, the companion statute, section 1771, was
    amended to directly specify that its protections extend only to
    work done under outside contract: “This section is applicable
    only to work performed under contract, and is not applicable to
    work carried out by a public agency with its own forces.” (Stats.
    1974, ch. 1202, § 1, p. 2593.) Because section 1771 is now
    expressly limited to contract work, there is no longer any need
    to clarify that those employed by contractors or subcontractors
    are also entitled to prevailing wage protection.
    Even if section 1772 might be considered surplusage now,
    that was not the case when it was first enacted. There is
    considerable historical support for this interpretation in
    addition to the legislative history. In the years after the
    codification of the Labor Code, the Attorney General on several
    occasions confirmed the understanding that, as originally
    enacted, section 1771 applied to a government’s own employees.
    In 1944, the Attorney General was asked to opine about a public
    works project that had originally been put out to bid but that
    was to be completed with day laborers hired by and under the
    supervision of the county. The Attorney General concluded that,
    under section 1771, the county was obligated to pay prevailing
    wages for construction work performed by the day laborers hired
    directly by the county. (3 Ops.Cal.Atty.Gen 399, 401 (1944).)
    Sixteen years later, the Attorney General again concluded
    that prevailing wage requirements applied to government
    employees. (35 Ops.Cal.Atty.Gen. 1 (1960).) Specifically, the
    Attorney General opined that prevailing wage requirements
    applied to employees of a flood control district while
    16
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    constructing things like channels and dams. In addition, the
    prevailing wage law applied to county employees that
    constructed storm-water conduits, highway bridges, and
    buildings. (Ibid.) The Attorney General noted that former
    section 1720, subdivision (a) (now 1720(a)(1)), which applies to
    contract work, was not implicated. However, the work was
    covered under former subdivisions (b) and (c) of section 1720,
    which applied to work done for certain special districts and to
    street, sewer, or other improvement work done under the
    direction and supervision of the state or one of its political
    subdivisions.16 (35 Ops.Cal.Atty.Gen., at p. 2.)
    Consistent with the Attorney General’s 1960 opinion, a
    1961 survey of prevailing wage laws in the 50 states reported
    that California’s prevailing wage law applied to specified
    governmental employees:          those working on “irrigation,
    reclamation, street, and sewer projects.” (Johnson, Prevailing
    Wage Legislation in the States, supra, 84:8 Monthly Lab. Rev. at
    p. 842, fn. 17.) California was identified as one of 14 states that,
    at the time, extended prevailing wage protection to government
    workers. (Ibid.) For at least three decades following its
    enactment, section 1771 could have been understood as covering
    certain governmental workers while section 1772 served the
    purpose of clarifying that employees of private contractors were
    likewise protected.
    This court took a contrary view of section 1771’s coverage
    in Bishop, supra, 
    1 Cal.3d 56
    . Interpreting that provision in
    light of sections 1720 and 1724, the court concluded “that section
    1771 is by its own terms applicable only to work performed
    16
    Former subdivisions (b) and (c) of section 1720 now appear, in
    substance, in subdivision (a)(2) and (3) of that same statute.
    17
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    under contract, and is not applicable to work carried out by a
    public agency with its own forces.” (Bishop, at p. 64.) Thereafter
    the Legislature codified this holding when it amended section
    1771 in 1974.        (O.G. Sansone Co. v. Department of
    Transportation (1976) 
    55 Cal.App.3d 434
    , 459 (Sansone).)
    Bishop was a closely contested 4–3 decision. The majority
    focused on provisions in the prevailing wage law emphasizing
    the law’s application to contracted work, noting that “the entire
    tenor [of the law] discloses a legislative purpose to deal only with
    contracted public work, and not with work done by a
    municipality by force account.” (Bishop, supra, 1 Cal.3d at p.
    64.) It is true that the bidding process and the intricacies of
    private contracts can require specificity and provisions not
    involved when governmental entities use their own workers.
    The court also emphasized that the Legislature had not
    amended the prevailing wage law since a 1959 Court of Appeal
    decision concluded the “ ‘prevailing wage and competitive
    bidding statutes have no application to work undertaken by
    force account or day labor.’ ” (Id. at pp. 64–65, citing Beckwith
    v. County of Stanislaus (1959) 
    175 Cal.App.2d 40
    , 48.) But the
    statement in the 1959 decision was dicta and unsupported by
    any analysis or citation to legal authority. (Beckwith, at p. 48.)
    Indeed, the case did not concern the application of the prevailing
    wage law or cite a single provision in that scheme. (Bishop, at
    p. 72 (dis. opn. of Peters, J.).) Further, the Legislature’s
    subsequent inaction, assuming it was even aware of the passing
    reference to the prevailing wage law in the 1959 decision, has
    no bearing upon the legislative intent at the time section 1771
    was enacted decades earlier.
    The lengthy dissent in Bishop pointed out, among other
    things, that the majority’s interpretation largely ignored other
    18
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    subdivisions of section 1720 defining “public works” to include
    activities not performed under contract, including work
    performed by special governmental districts as well as street
    and sewer work. (Bishop, supra, 1 Cal.3d at p. 70 (dis. opn. of
    Peters, J.).) The majority also failed to consider the legislative
    history of section 1771 and its interplay with section 1772.
    The incomplete analysis in Bishop led to an erroneous
    interpretation of section 1771, and for that reason Bishop v. City
    of San Jose, supra, 
    1 Cal.3d 56
     is overruled to the extent it is
    inconsistent with our conclusion that section 1771 as originally
    enacted applied to direct governmental employees. Because
    Bishop was superseded by statute when section 1771 was
    amended to exclude government employees, the overruling of
    the Bishop majority’s section 1771 analysis has no practical
    effect. Government employees are now expressly excluded from
    the scope of the prevailing wage law. (§ 1771.) However, our
    rejection of Bishop does confirm that section 1772 as we have
    interpreted it served an important purpose at its inception,
    when the prevailing wage law extended to those employed
    directly by the government. The statute was not surplusage at
    the time of its enactment.
    Even if Bishop were correctly decided and section 1771 did
    not apply to government workers at the time of its enactment,
    section 1772 would still have served a valuable purpose, if only
    to clarify the application of the law. It could certainly have been
    argued that employees of subcontractors engaged in public work
    came within the prevailing wage law. But section 1772 removed
    any doubt and continues to do so. A contractor cannot avoid the
    prevailing wage obligation by parsing out tasks to
    subcontractors. Further, section 1772 has been interpreted to
    extend prevailing wage entitlement to workers whose services
    19
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    are used by a main contractor or subcontractor even when there
    is no formal employment relationship. As the Public Works
    Manual prepared by the Office of the Labor Commissioner
    suggests, section 1772 extends protection to workers “whose
    services are ‘utilized’ in furtherance of the business of another,
    notwithstanding the technical absence of an employer-employee
    relationship, or a person ‘engaged in’ a task for another under
    contract, or orders to do it.” (Dep. of Industrial Relations, Div.
    of Labor Standards Enforcement, Public Works Manual (May
    2018) § 2.2, p. 3.) Thus, section 1772 continues to serve an
    important purpose in defining the types of workers entitled to
    the law’s protection.
    D.    Plaintiffs’ Focus on “Execution” and “Deemed”
    Plaintiffs’ attempt to expand the scope of the prevailing
    wage law beyond the definition of “public works” largely rests on
    the meaning of the terms “execution” and “deemed” in section
    1772.
    Plaintiffs first point to the term “execution” in section
    1772, as used in the phrase “in the execution of any contract for
    public work.” They claim the term broadly means “carrying out
    and completion of all provisions of the contract, regardless [of]
    whether that work would constitute a public work[] if it were
    viewed independently.” (See Williams, supra, 156 Cal.App.4th
    at p. 750.) This interpretation would bring within the scope of
    the prevailing wage law any activity required to fulfill a public
    works contract, even if the work did not qualify as a defined
    “public work.”
    This expansive role for the phrase “in the execution of” is
    inconsistent with the Legislature’s approach to defining what is
    encompassed by that term. When the Legislature has expanded
    20
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    the reach of the law, it has done so by changing the definitions
    of “public works” in article 1. (See generally §§ 1720–1720.9.)
    These amendments reflect a deliberate and specific intent to
    delineate and parse out what kind of labor constitutes “public
    works.” Over the decades the Legislature has revisited and
    refined the scope of public works definitions. For example, the
    Legislature has taken care to specify that “public works” means
    certain hauling of refuse to an outside location, but not if the
    refuse consists of recyclable materials that are separated and
    sold. (§ 1720.3.) As another example, the hauling and delivery
    of ready-mixed concrete to fulfill a public works contract
    constitutes a “public work,” but this same provision does not
    extend to the hauling and delivery of asphalt. (§ 1720.9, subd.
    (a).)
    Plaintiff’s proposed interpretation would render these
    distinctions meaningless if section 1772 extends the prevailing
    wage law to any work required to fulfill a public works contract.
    There is little reason to believe the Legislature would take great
    pains to specify what constitutes “public works” in article 1
    while broadening the scope of coverage through section 1772 to
    encompass activities not expressly falling within those carefully
    crafted definitions. Plaintiffs provide no limiting principle to
    their proposed expansion. Nor does the plain language of
    section 1772 furnish any limitation on plaintiffs’ proposed
    understanding.
    A more reasonable interpretation of “in the execution of”
    is that it simply clarifies which workers are entitled to the
    prevailing wage when employed by contractors. All workers are
    not universally so entitled. Laborers receive the benefits of the
    law if they are employed to carry out public works. The qualifier
    “in the execution of [a] contract for public work” in section 1772
    21
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    establishes that limitation. The effect of plaintiff’s proposal
    runs contrary to legislative intent. The Legislature has taken
    great care over decades to precisely categorize, in article 1, just
    what kinds of labor constitute public works. Yet plaintiffs’
    approach would throw aside that careful drafting by allowing a
    different result under an interpretation of an imprecise statute
    that has gone largely unchanged for over 90 years. If the
    Legislature so intends, it is, of course, empowered to take that
    action. We will not divine such an intention on its behalf.
    Plaintiffs also focus on the use of the word “deemed.” They
    argue that even if work being performed under contract is not
    “public work” when considered in isolation, it could still be
    “deemed” a public work if the terms of section 1772 are satisfied.
    In effect, they would expand the scope of the prevailing wage
    law by “deeming” as “public work” an activity the Legislature
    has not so designated.
    This approach misconceives the role that “deemed” plays
    in section 1772. As used in the statute, “deemed” modifies the
    types of workers entitled to the prevailing wage, not the types of
    labor those workers perform. The statute is not structured to
    say that work done “in the execution of any contract for public
    work [is] deemed to be . . . public work.” Instead, it is the
    workers who are “deemed to be employed upon public work.”
    (§ 1772.) Section 1772 focuses on which workers are entitled to
    the prevailing wage, not upon the types of work that qualify for
    coverage.
    Further, interpreting “deemed” in the sense urged by
    plaintiffs would assign undue importance to opaque language
    that does not otherwise signal an intent to expand the law’s
    scope. If the Legislature had intended to expand the scope of
    22
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    the prevailing wage law to capture work that does not fit within
    the provisions defining “public works,” it is unlikely it would
    have used such a subtle approach to achieve that end. “ ‘The
    Legislature “does not, one might say, hide elephants in
    mouseholes.” ’ ” (Jones v. Lodge at Torrey Pines Partnership
    (2008) 
    42 Cal.4th 1158
    , 1171.)
    E.    Judicial and Administrative Decisions
    1.    Court of Appeal Cases
    While this court has not previously interpreted section
    1772, the provision has been the subject of several lower court
    opinions. None of these decisions provides a persuasive reason
    to depart from the interpretation outlined here. For the reasons
    explained below, we disapprove those decisions in whole or in
    part.
    No California case meaningfully touched upon section
    1772 for decades after its enactment. The first case arguably to
    do so was Sansone, supra, 
    55 Cal.App.3d 434
    , in 1976. There,
    the court considered whether truck drivers who delivered
    materials used in building roads were entitled to the prevailing
    wage. The court quoted sections 1772 and 1774 but otherwise
    included no analysis or discussion of those statutes. (Sansone,
    at p. 441.) The issue as framed was whether the trucking
    companies that employed the drivers were subcontractors
    within the meaning of the prevailing wage law. (Ibid.)
    Finding no California cases discussing who qualifies as a
    subcontractor under the prevailing wage law, the court turned
    to the federal Davis-Bacon Act (
    40 U.S.C. § 3141
     et seq.).
    (Sansone, supra, 55 Cal.App.3d at p. 442.) Under the federal
    scheme, a supplier of standard building materials, referred to as
    a “bona fide” materialman or material supplier, is not
    23
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    considered a subcontractor. A bona fide material supplier is
    therefore exempt from the obligation to pay its employees,
    including truck drivers, the prevailing wage. For the Davis-
    Bacon Act exemption to apply, the supplier must sell goods to
    the general public, the location from which the supplies are
    obtained may not be established specifically for the particular
    public works project, and the supply location cannot be situated
    on the public works site. (Ibid.)
    Sansone held the trucking companies qualified as
    subcontractors who used their employees to fulfill a public
    works contract and, thus, were obligated to pay prevailing
    wages. (Sansone, supra, 55 Cal.App.3d at p. 445.) Two key
    factors distinguished the companies from those material
    suppliers exempt from federal prevailing wage requirements.
    First, the roadbuilding materials were obtained from a location
    adjacent to the project site and established specifically to serve
    that site. (Id. at pp. 443–444.) Second, the trucking companies
    were carrying out a term of the prime contract, which required
    the prime contractor to furnish the materials. (Ibid.)
    In reaching its decision, the Sansone court also looked to
    Green v. Jones (Wis. 1964) 
    128 N.W.2d 551
     (Green), a decision of
    the Wisconsin Supreme Court interpreting that state’s
    prevailing wage law. (Sansone, supra, 55 Cal.App.3d at p. 443.)
    The Wisconsin decision contrasted hauling from a commercial
    location operating continuously, which would not be covered,
    with hauling from a location set up solely to serve the project,
    which would be covered. (Id. at p. 444.) But the Wisconsin court
    went further, stating that regardless of the source of the
    materials, the drivers would be covered if the materials were
    immediately utilized on the improvement. (Ibid.) In assessing
    coverage, it considered whether “ ‘[t]he drivers’ tasks were
    24
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    functionally related to the process of construction’ ” and the
    “ ‘delivery of materials was an integrated aspect of the “flow”
    process of construction.’ ” (Ibid., citing Green, at p. 563, italics
    added.) While Sansone ostensibly focused on whether the
    trucking companies were subcontractors rather than material
    suppliers, its approach has served to influence California’s
    section 1772 jurisprudence. That influence was due in part to
    Sansone’s citation to Green and its embrace of the notion that
    work integrated into the construction process is covered under
    the prevailing wage law. (See Williams, supra, 156 Cal.App.4th
    at pp. 752–754; Sheet Metal, supra, 229 Cal.App.4th at pp. 205–
    206.)
    The next California case to address section 1772 was
    Williams, supra, 
    156 Cal.App.4th 742
    , which like Sansone
    involved truckers hauling materials. In Williams, truckers
    removed unused construction materials like excess rock and
    sand from construction sites. (Williams, at pp. 746–747.) The
    Williams court characterized the legal question as whether the
    truckers removing the construction materials were employed
    “ ‘in the execution’ ” of the contract under section 1772.
    (Williams, at p. 749.) The court concluded the truckers were
    not entitled to the prevailing wage under that statute. (Id. at
    p. 753.)
    Williams began the analysis by focusing on the definition
    of “execution” within section 1772, concluding that the term
    “plainly means the carrying out and completion of all provisions
    of the contract.” (Williams, supra, 156 Cal.App.4th at p. 750.)
    Then, while acknowledging that Sansone concerned who is or is
    not a subcontractor under the prevailing wage law, Williams
    turned to that case to “inform[] [the] assessment of the intended
    reach” of the law to workers employed “ ‘in the execution’ ” of a
    25
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    public works contract. (Ibid.) Relying on Sansone and Green,
    Williams emphasized a task’s functional relationship to the
    process of construction and whether a task was “ ‘an integrated
    aspect of the “flow” process of construction.’ ” (Id. at p. 751,
    citing Green, supra, 128 N.W.2d at p. 563.) In assessing
    coverage, Williams considered whether a task was required to
    carry out a term of the public works contract, whether the work
    was performed at the project site or a site “integrally connected”
    to the project site, and whether work performed off the actual
    construction site was necessary to fulfill the contract. (Williams,
    at p. 752.)
    There was no evidence of a functional relationship
    between the actual construction and the subsequent removal of
    unused materials. Accordingly, Williams held the removal work
    was “unrelated to the performance of the prime public works
    contract . . . .” (Williams, supra, 156 Cal.App.4th at p. 753.) It
    was “no more an integral part of the process of the public works
    project than the delivery of generic materials to the public works
    site by a bona fide material supplier.” (Ibid.) According to the
    Williams court, “there was no evidence from which a
    determination could be made that the off-hauling was ‘an
    integrated aspect of the “flow” process’ [citation] of the
    project.”17 (Williams, at p. 754.)
    17
    After Williams the Legislature amended the definition of
    “hauling of refuse,” a covered public work under section 1720.3,
    to clarify that the term “includes, but is not limited to, hauling
    soil, sand, gravel, rocks, concrete, asphalt, excavation materials,
    and construction debris.” (§ 1720.3, subd. (b), as amended by
    Stats. 2011, ch. 676, § 1.) Consistent with our analysis here, it
    did so by amending the relevant section in article 1.
    26
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    The only other California case to consider the meaning of
    section 1772 is Sheet Metal, 
    229 Cal.App.4th 192
    , which
    concerned coverage for offsite fabrication. In Sheet Metal, a
    community college entered into a public works contract to
    upgrade its facilities, including the update of a heating and
    cooling system. A firm that made a variety of ductwork and
    other sheet metal components at its permanent offsite facility
    subcontracted to make, and then install, its components into the
    college system. (Id. at p. 196.) The issue was whether the firm’s
    workers who made the ductwork offsite were entitled to the
    prevailing wage. The court concluded there was no such
    entitlement. It reasoned “the work was not done ‘in the
    execution’ of the contract within the meaning of section 1772.”
    (Id. at p. 214.) It observed that the offsite facility’s location and
    existence were wholly unrelated to the particular public works
    project. (Ibid.)
    Sheet Metal built upon the foundation deduced from
    Sansone and Williams, which emphasized that the critical factor
    in assessing coverage under section 1772 is “whether it is
    integrated into the flow process of construction.” (Sheet Metal,
    supra, 229 Cal.App.4th at p. 206.) The decision also relied to a
    significant extent on a federal regulation defining the “site of the
    work” for purposes of the Davis-Bacon Act to exclude
    “ ‘permanent . . . fabrication plants . . . of a contractor or
    subcontractor whose location and continuance in operation are
    determined wholly without regard to a particular Federal or
    federally assisted contract or project.’ ” (Sheet Metal, at p. 210,
    citing 
    29 C.F.R. § 5.2
    (l)(3) (2014).)
    These three cases are the only published California
    opinions that have purported to interpret section 1772 since its
    enactment. Plaintiffs urge they should be disregarded because
    27
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    they apply a standard derived from the federal Davis-Bacon
    Act’s limitation on coverage to persons “employed directly on the
    site of the work.”18 (
    40 U.S.C. § 3142
    (c)(1).) According to
    plaintiffs, California’s prevailing wage law includes no such
    geographical limitation on coverage. They argue that even if
    there was a valid reason for applying principles derived from
    federal law to hauling and offsite fabrication, those principles
    should not be used more generally to define the scope of section
    1772.
    It is unnecessary to consider the geographical scope of the
    prevailing wage law to assess the validity of the approach taken
    in Sansone, Williams, and Sheet Metal.19 Those cases primarily
    involved whether a company is a subcontractor within the
    meaning of the prevailing wage law. While the factors they
    employed may be valid to resolve that narrow question, they are
    not necessarily useful to resolve whether an activity is
    performed “in the execution” of a public works contract under
    section 1772. The reliance on their approach for this different
    purpose has led to an interpretation of section 1772 that
    expands its application to tasks that might not otherwise qualify
    as public works, simply because they have some functional
    relationship or integration with public work. That expansion is
    not supported by the language or legislative history of section
    18
    Aside from federal authority, Sansone also relied upon the
    Wisconsin Supreme Court decision in Green, supra, 
    128 N.W.2d 1
    . (Sansone, supra, 55 Cal.App.3d at pp. 443–444.) Like
    the federal Davis-Bacon Act, Wisconsin limited its coverage to
    “ ‘work on the site.’ ” (Green, at p. 6.)
    19
    We express no view concerning whether California’s
    prevailing wage law places a geographic limitation on coverage
    in relation to the public works site.
    28
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    1772. It instead originates from the federal Davis-Bacon Act,
    which contains no statutory language analogous to section 1772.
    Further, the approach in Sansone, Williams, and Sheet
    Metal causes coverage to turn on factors other than an activity’s
    definition as a public work. To the extent coverage is premised
    upon whether an activity is integrated into the flow process of
    construction, the approach ignores the carefully crafted
    definitions of public work contained in the prevailing wage law.
    Moreover, it is not entirely clear what it means for an activity to
    be “integrated” into construction or other defined public work.
    To the extent it might be argued the Legislature has
    acquiesced in the existing construction of section 1772 by failing
    to amend or clarify its provisions, the argument is not
    persuasive.         “In the area of statutory construction, an
    examination of what the Legislature has done (as opposed to
    what it has left undone) is generally the more fruitful inquiry.
    ‘[L]egislative inaction is “ ‘a weak reed upon which to
    lean’ ” . . . .’ ” (Harris v. Capital Growth Investors XIV (1991) 
    52 Cal.3d 1142
    , 1156; accord, Saint Francis Memorial Hospital v.
    State Dept. of Public Health (2020) 
    9 Cal.5th 710
    , 723.) Since
    Sansone was decided, the Legislature has actively defined and
    modified the definitions of “public works.” (See, e.g., Stats. 2000,
    ch. 881, § 1, p. 6517; Stats. 2001, ch. 938, § 2, p. 7509; Stats.
    2012, ch. 810, § 1; Stats. 2015, ch. 739, § 1.) These actions are
    not consistent with an interpretation of section 1772 that would
    expand the scope of the prevailing wage law as plaintiffs urge.
    The prevailing wage law as written and amended does not
    support an interpretation of section 1772 that expands the law’s
    scope beyond defined “public works.” To the extent O.G.
    Sansone Co. v. Department of Transportation, supra, 55
    29
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    Cal.App.3d 434, Williams v. SnSands Corp., supra, 
    156 Cal.App.4th 742
    , and Sheet Metal Workers’ Internat. Assn.,
    Local 104 v. Duncan, supra, 
    229 Cal.App.4th 192
    , suggest to the
    contrary or are otherwise inconsistent with this opinion, they
    are disapproved.20
    In his dissent in Busker v. Wabtec Corp. (Aug. 16, 2021,
    S251135) ___ Cal.5th ___ (dis. opn. of Cuéllar, J.) (Busker),
    Justice Cuéllar argues that the majority “overturns decades of
    legal decisions that had established a persuasive, workable
    framework for interpreting and applying” section 1772. 21
    (Busker, at ___ [p. 3] (dis. opn. of Cuéllar, J.).) However, it is
    precisely because the existing “framework” is so unclear that the
    Ninth Circuit asked this court to address the application of
    section 1772 in two separate cases. (See ante, at p. 3; Busker, at
    ___ [p. 26].) The interpretation we adopt turns on careful
    consideration of the text of section 1772 and its history, not upon
    concerns about whether the current interpretation is difficult to
    administer. In any event, the existing framework could hardly
    be described as workable.
    20
    We express no view as to whether Sansone and its progeny
    have continued vitality in assessing whether an employer is a
    subcontractor (as opposed to bona fide material supplier) within
    the meaning of the prevailing wage law.
    21
    The dissent has chosen to set forth the bulk of its section 1772
    analysis and critique of the majority’s approach in a separate
    opinion filed in Busker, a decision filed concurrently with this
    opinion. (See dis. opn. of Cuéllar, J., post, at p. 2; Busker, supra,
    ___ Cal.5th at ___ [p. 27, fn. 17].) The reader is directed to
    Justice Cuéllar’s dissent in Busker for a more complete
    explanation of the dissent’s approach to interpreting section
    1772 and its response to the majority’s analysis here. (Busker,
    at ___ [pp. 1–24] (dis. opn. of Cuéllar, J.).)
    30
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    The difficulty in applying the approach taken in Sansone
    and its progeny is exemplified by the three “factors” the dissent
    identifies as relevant to assessing “whether labor is done in ‘the
    execution of [a] contract for public work’ under section
    1772 . . . .” (Dis. opn. of Cuéllar, J., post, at p. 2.) The factors
    include “whether the labor is (1) functionally related to the
    construction process; (2) integrated into that process; and (3)
    done to fulfill the prime contractor’s obligation to complete a
    public works aspect of the project.” (Id. at pp. 2–3, fn. omitted.)
    These factors are not “longstanding,” as Justice Cuéllar’s Busker
    dissent suggests (Busker, supra, ___ Cal.5th at ___ [p. 12] (dis.
    opn. of Cuéllar, J.)), but instead are derived from a hodgepodge
    of considerations found in Sansone, Williams, and Sheet Metal.
    Moreover, despite the emphasis in Justice Cuéllar’s Busker
    dissent on the importance of the terms “execution” and “deemed”
    in section 1772 (see Busker, at ___ [pp. 3–4] (dis. opn. of Cuéllar,
    J.)), the three-part test does not even mention them. Instead,
    the test relies on broad and undefined terms not found in the
    statute:      “functionally related,” “construction process,”
    “integrated,” and “public works aspect of the project.” (Id. at ___
    [pp. 10–11] (dis. opn. of Cuéllar, J.).)
    Justice Cuéllar’s Busker dissent acknowledges that some
    “judgment” will be required “to discern whether a particular
    type of labor has a functional or integrated relationship with
    contracted-for public work.” (Busker, supra, ___ Cal.5th at ___
    [p. 14] (dis. opn. of Cuéllar, J.).) However, the shifting
    characterization of how section 1772 is to be applied points to
    the extreme difficulty in exercising that judgment. At one point,
    Justice Cuéllar’s Busker dissent refers to “[w]ork critically
    related” to the execution of a public works contract. (Busker, at
    ___ [p. 2] (dis. opn. of Cuéllar, J.), italics added.) Elsewhere, it
    31
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    refers to “labor that is not unduly attenuated from the actual
    construction work or other defined public work, and instead
    bears a logical connection to the preconstruction, construction,
    or postconstruction process.” (Id. at ___ [p. 11] (dis. opn. of
    Cuéllar, J.), italics added.) At another point, it describes “tasks
    vital to the performance and completion of covered ‘public work’
    . . . .” (Id. at ___ [p. 24] (dis. opn. of Cuéllar, J.), italics added.)
    Finally, it describes section 1772 as covering “labor performed
    in preparation for, in furtherance of, or otherwise bearing a
    critical relationship to defined public work and the public works
    project as a whole . . . .” (Id. at ___ [p. 24] (dis. opn. of Cuéllar,
    J.), italics added.) The differing and expansive terms used to
    describe the application of section 1772 illustrate the inherent
    difficulty in applying the test laid out in the dissent. It is simply
    not the case that the majority approach rejects a persuasive or
    workable framework for interpreting and applying section 1772.
    2.     Administrative Decisions
    In addition to case law interpreting section 1772,
    administrative decisions of the Department of Industrial
    Relations (Department) have also applied the statute. Amicus
    curiae Division of Labor Standards Enforcement cites several
    coverage decisions from the 1980’s and 1990’s interpreting
    section 1772 to apply to mobilization. These decisions do not
    have a precedential effect. (See Kaanaana, supra, 11 Cal.5th at
    p. 179.)     Further, the Department has no comparative
    advantage over the courts in deciding an issue of pure statutory
    interpretation. (Kaanaana, at p. 179; Center for Biological
    Diversity v. Department of Fish & Wildlife (2015) 
    62 Cal.4th 204
    ,
    236.) Nevertheless, while “ultimate responsibility for statutory
    interpretation rests with the courts, an agency’s interpretation
    32
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    ‘is “one among several tools available to the court” when judging
    the [statute’s] meaning and legal effect.’ ” (Id. at p. 178.)
    In his Busker dissent, Justice Cuéllar argues that the
    Department’s decisions deserve “serious consideration and offer
    further insight into what the statute means.” (Busker, supra,
    ___ Cal.5th at ___ [p. 7] (dis. opn. of Cuéllar, J.).) He
    acknowledges the decisions have “dutifully applied the approach
    in Sansone, Williams, and Sheet Metal for effectuating section
    1772.” (Busker, at ___ [p. 13] (dis. opn. of Cuéllar, J.).) But that
    is precisely why they add nothing to the analysis.               An
    administrative interpretation that is clearly erroneous, even if
    long-standing and consistent, is entitled to no deference. (See
    Sara M. v. Superior Court (2005) 
    36 Cal.4th 998
    , 1012.) Because
    the decisions apply the same approach to section 1772 as
    Sansone and its progeny, they offer no valid reason to extend
    coverage to mobilization under that statute.
    F.    Application to Mobilization
    In light of our interpretation of section 1772, the answer
    to the Ninth Circuit’s certified question is simple. That statute
    does not expand coverage to labor not otherwise defined as
    public work. Unless mobilization qualifies as public work, an
    employer has no obligation to pay the prevailing wage to those
    who perform it. Section 1772 cannot independently serve as the
    basis for concluding that the prevailing wage must be paid for
    mobilization.
    This conclusion does not rule out the possibility that
    prevailing wages must be paid for mobilization work under some
    33
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    other theory.22 But that issue is not before us. The Ninth
    Circuit’s question is limited to whether mobilization is covered
    under section 1772.
    While this court may restate the certified question (Cal.
    Rules of Court, rule 8.548(f)(5)), we lack the power to reshape
    the federal litigation that gave rise to the question in the first
    instance. When we decide a question of California law posed by
    another court, we are limited to an issue that “could determine
    the outcome of a matter pending in the requesting court.” (Cal.
    Rules of Court, rule 8.548(a)(1).) The broader issue of whether
    plaintiffs are entitled to be paid the prevailing wage under any
    conceivable theory is beyond the scope of the pending federal
    litigation. The sole issue presented on appeal to the Ninth
    Circuit was whether section 1772 afforded coverage for
    mobilization. A decision concerning whether mobilization
    qualifies as “construction” or other defined “public work” would
    not only consider a defense to the partial summary judgment
    motion not raised by the plaintiffs, but it would also not address
    the narrow legal issue before the Ninth Circuit.
    Plaintiffs did raise the issue of whether transportation of
    equipment to the work site should be treated as “travel time,”
    which, they claim, must be compensated at the prevailing wage.
    22
    As used in the prevailing wage law, for example, the term
    “ ‘construction’ ”    includes       “preconstruction”      and
    “postconstruction” phases of construction work. (§ 1720(a)(1); cf.
    Priest v Housing Authority of City of Oxnard (1969) 
    275 Cal.App.2d 751
    , 756.) In addition, section 1720, subdivision
    (a)(3) defines “ ‘public works’ ” to include “[s]treet . . .
    improvement work.” We express no view as to whether
    mobilization qualifies as construction, street improvement
    work, or any other category of “ ‘public works’ ” defined in
    section 1720 et seq.
    34
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    To the extent their contention is premised upon the application
    of section 1772, the argument fails for the reasons articulated
    above. If travel time does not fall under a definition of public
    work, section 1772 does not independently provide a basis for
    coverage. Insofar as there may be some other statutory basis for
    compensating travel time at the prevailing rate, that issue is
    beyond the scope of the question certified by the Ninth Circuit.
    Justice Cuéllar’s dissents here and in Busker argue in
    quite forceful terms that a different approach to the
    understanding of “public works” is called for. They set out what
    our colleagues urge would be a better interpretation of the
    statutory language, and they reject the notion that coverage is
    limited to defined “public works.” They fail to acknowledge,
    however, that this is a legislative function. The Legislature may
    of course choose, or decline, to modify the definitions of “public
    works” it has chosen over the decades. That is a policy choice to
    be considered by the Legislature after input from all interested
    parties and the exercise of its own judgment as to how best serve
    the sometimes competing goals it seeks to achieve.
    In our view, it is not the role of the judiciary to usurp that
    legislative prerogative. Reading existing legislative enactments
    with care is not “pernicious” or merely an exercise in “judicial
    modesty.” (Busker, supra, ___ Cal.5th at ___ [pp. 2, 3] (dis. opn.
    of Cuéllar, J.).) Instead, it is an approach, firmly established in
    our jurisprudence, that honors the important safeguards served
    by the separation of powers. “[C]onstru[ing] the law liberally”
    is a different enterprise from rewriting the law to have it read
    as we think best. (Busker, at ___ [p. 2] (dis. opn. of Cuéllar, J.).)
    We emphasize two points, lest there be any confusion.
    First, the prevailing wage law covers what the Legislature says
    35
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Opinion of the Court by Corrigan, J.
    it covers. Second, our holding is narrow. We merely address the
    question posed by the parties and the Ninth Circuit: whether
    section 1772, standing alone, expands the scope of the term
    “public works” to embrace labor that is not covered by the
    definitions enacted as part of section 1720 et seq. Nothing we
    say here should be read to condone any attempt to ignore the
    protections or obligations of the prevailing wage law.
    III. CONCLUSION
    We answer the Ninth Circuit’s question as follows.
    Section 1772 does not expand the categories of public work that
    trigger the obligation to pay at least the prevailing wage under
    section 1771. Here there is no contention that mobilization
    qualifies as defined “public work.” Under the circumstances,
    section 1772 does not provide a basis for requiring plaintiffs to
    be paid the prevailing wage for that work.
    CORRIGAN, J.
    We Concur:
    CANTIL-SAKAUYE, C. J.
    KRUGER, J.
    GROBAN, J.
    JENKINS, J.
    36
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    S253574
    Dissenting Opinion by Justice Cuéllar
    Plaintiffs (Leopoldo Pena Mendoza, Elviz Sanchez, and
    Jose Armando Cortes) worked as engineers for a public works
    roadway construction project. They operated heavy milling
    machines to break up the existing roadbeds so that new roads
    could be built.     (Maj. opn., ante, at p. 2.)         This was
    unquestionably “ ‘public works’ ” labor under Labor Code section
    1720, subdivision (a)(1),1 as it clearly involved “[c]onstruction,
    alteration, demolition, installation, or repair work . . . .”
    (§ 1720, subd. (a)(1).) The majority agrees. (Maj. opn., ante, at
    p. 6.)
    Plaintiffs also had to engage in “mobilization”
    work: transporting the milling machinery to and from offsite
    storage locations and preparing it for use. (Maj. opn., ante, at p.
    2 & fn. 3.) There was little prospect that plaintiffs could
    complete the construction work they were hired to do without
    mobilizing the machines used to repave the roadways. The
    majority nonetheless rejects plaintiffs’ argument that
    mobilization labor qualifies for prevailing wage coverage under
    section 1772, which provides that “[w]orkers employed by
    contractors or subcontractors in the execution of any contract for
    public work are deemed to be employed upon public work.”
    (§ 1772.) By its account, section 1772 in no way relates to the
    1
    Further unspecified section references are to the Labor
    Code.
    1
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Cuéllar, J., dissenting
    scope of work covered, and instead simply ensures coverage for
    contract workers engaged in defined public works activities.
    (See, e.g., maj. opn., ante, at pp. 1–2, 8–10, 14, 21–22.)
    That’s a conclusion I cannot embrace. I respectfully
    dissent for the same reasons explained more fully in my
    separate dissenting opinion in the other prevailing wage case we
    also decide today, Busker v. Wabtec Corp. (Aug. 16, 2021,
    S251135) __ Cal.5th __ (Busker).
    Because of the prevailing wage law’s critical function in
    protecting workers employed on public works, we must interpret
    the law liberally. (City of Long Beach v. Department of
    Industrial Relations (2004) 
    34 Cal.4th 942
    , 949–950.) For
    several decades, the Courts of Appeal and Department of
    Industrial Relations (DIR) have fulfilled their obligation in
    construing section 1772 by interpreting it to cover certain work
    critically related to the “execution of” (ibid.) a public works
    contract. (See, e.g., O.G. Sansone Co. v. Department of
    Transportation (1976) 
    55 Cal.App.3d 434
    , 443–444 (Sansone);
    Williams v. SnSands Corp. (2007) 
    156 Cal.App.4th 742
    , 752–
    753; Sheet Metal Workers’ Internat. Assn., Local 104 v. Duncan
    (2014) 
    229 Cal.App.4th 192
    , 205–206, 211–214 (Sheet Metal).)
    These cases provide us with three factors that help determine
    whether labor is done in “the execution of [a] contract for public
    work” under section 1772: whether the labor is (1) functionally
    related to the construction process; (2) integrated into that
    2
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Cuéllar, J., dissenting
    process; and (3) done to fulfill the prime contractor’s obligation
    to complete a public works aspect of the project.2
    The majority nonetheless breaks with this established
    authority without justification. It glosses over section 1772’s
    language deeming workers engaged in the “execution of” a public
    works contract — i.e., working to carry out and complete the
    construction or other related tasks for the project — to be
    employed on “public work.” (§ 1772.) It papers over this
    language, and in the process disapproves of long-standing
    authority providing a workable framework for applying it, on
    the basis of an implausible reading of the section’s exceedingly
    spare legislative history. And its interpretation undermines the
    prevailing wage law’s purposes; among other things, it
    encourages public works employers to segment out labor not
    defined as “public works,” but nonetheless constituting labor as
    crucial as it is integral to public works projects, so that they can
    pay lesser wages.
    I add two brief observations to my Busker dissent (Busker,
    supra, __ Cal.5th at p. __ [pp. 1–24] (dis. opn. of Cuéllar, J.)),
    underscoring how the majority’s interpretation errs as it
    specifically relates to mobilization work. First, mobilization
    naturally merits prevailing wage coverage based on its critical
    relationship with covered public work. The three factors from
    the Sansone line of cases reinforce this conclusion. The
    mobilization at issue here was functionally related to and
    2
    Although the Sansone line of cases refers to the
    “construction” process (see, e.g., Sansone, supra, 55 Cal.App.3d
    at p. 444), its principles would apply to any other type of activity
    that qualifies as “public work.” I therefore use “construction”
    here as an umbrella term for all the kinds of labor defined by
    the statute as public work.
    3
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Cuéllar, J., dissenting
    integrated into the covered milling work and the project as a
    whole because the road construction as contracted for could not
    occur unless the machines arrived promptly, worked properly,
    and were removed when they served their purpose. Moreover,
    plaintiffs had to engage in mobilization to fulfill the prime
    contractor’s contractual obligation to build new roads. The
    contractor owned the milling machines and elected to store them
    offsite. It directed its own employees to prepare and transport
    them so those employees could then use the machines as part of
    the road construction called for by the contract.
    In other words, the mobilization of specialized
    construction equipment by the skilled workers who would use
    them at the jobsite was sufficiently connected with the execution
    of a public construction project to be deemed public work under
    section 1772. (Cf. Allied Concrete & Supply Co. v. Baker (9th
    Cir. 2018) 
    904 F.3d 1053
    , 1061 [explaining how prevailing wage
    coverage for ready-mix concrete drivers, as opposed to drivers
    supplying standard building materials, makes sense because
    the former “are more integrated into the construction process”
    and “are more skilled than other drivers and provide a material
    that is more important to public works projects than other
    materials such that paying the prevailing wage will attract
    superior drivers and improve public works”].) Excluding this
    labor from coverage under section 1772 despite its critical role
    makes no sense.
    Also calling into question the majority’s interpretation: It
    flies in the face of the DIR’s consistent position covering
    mobilization work under section 1772. As the DIR’s Division of
    Labor Standards and Enforcement argues in its amicus curiae
    brief and illustrates in the past coverage determinations that it
    provides in its request for judicial notice, the agency has for
    4
    MENDOZA v. FONSECA MCELROY GRINDING CO., INC.
    Cuéllar, J., dissenting
    decades followed Sansone and interpreted the section as
    covering mobilization labor based on the labor’s critical
    relationship to covered work. Neither defendants (Fonseca
    McElroy Grinding Co. Inc. and Granite Rock Company) nor the
    majority identify any circumstance where the DIR has
    determined that mobilization is not covered.
    Because plaintiffs’ mobilization work critically facilitated
    the public works roadway construction project, section 1772
    entitled them to prevailing wages for this labor. They performed
    this labor “in the execution of” the contract for the roadway
    project, and section 1772’s language therefore “deemed” them
    “to be employed upon public work.” (§ 1772.) But the majority
    narrows this statutory language beyond recognition. So with
    respect, I dissent.
    CUÉLLAR, J.
    I Concur:
    LIU, J.
    5
    See next page for addresses and telephone numbers for counsel who
    argued in Supreme Court.
    Name of Opinion Mendoza v. Fonseca McElroy Grinding Co., Inc.
    __________________________________________________________
    Procedural Posture (see XX below)
    Original Appeal
    Original Proceeding XX on request by 9th Circuit (Cal. Rules of
    Court, rule 8.548)
    Review Granted (published)
    Review Granted (unpublished)
    Rehearing Granted
    __________________________________________________________
    Opinion No. S253574
    Date Filed: August 16, 2021
    __________________________________________________________
    Court:
    County:
    Judge:
    __________________________________________________________
    Counsel:
    Justice At Work Law Group, Tomas E. Margain; Esner, Chang &
    Boyer, Stuart B. Esner and Holly N. Boyer for Plaintiffs and
    Appellants.
    Altshuler Berzon, Eileen Goldsmith and Zoe Palitz for International
    Association of Sheet Metal, Air, Rail & Transportation Workers, Sheet
    Metal Workers’ Local Union No. 104 as Amicus Curiae on behalf of
    Plaintiffs and Appellants.
    David Balter, Kristin García, Luong Chau and Lance Grucela for
    Department of Industrial Relations, Division of Labor Standards
    Enforcement as Amicus Curiae on behalf of Plaintiffs and Appellants.
    Simpson, Garrity, Innes & Jacuzzi, Paul V. Simpson and Sarah E.
    Lucas for Defendants and Respondents.
    Rutan & Tucker, Paul Aherne and Alyssa Roy for Construction
    Employers’ Association as Amicus Curiae on behalf of Defendants and
    Respondents.
    Cook Brown, Dennis B. Cook and Stephen McCutcheon for Modular
    Building Institute, Northern Alliance of Engineering Contractors and
    Western Electrical Contractors Association, Inc., as Amici Curiae on
    behalf of Defendants and Respondents.
    Sweeny, Mason, Wilson & Bosomworth and Roger M. Mason for United
    Contractors as Amicus Curiae on behalf of Defendants and
    Respondents.
    Jeffer Mangels Butler & Mitchell, Kerry Shapiro, Matthew D. Hinks
    and Martin P. Stratte for California Construction and Industrial
    Materials Association as Amicus Curiae on behalf of Defendants and
    Respondents.
    Ogletree, Deakins, Nash, Smoak & Stewart, Robert R. Roginson and
    Ryan H. Crosner for Associated General Contractors of California as
    Amicus Curiae on behalf of Defendants and Respondents.
    Atkinson, Andelson, Loya, Ruud & Romo, Robert Fried, Thomas A.
    Lenz and Elizabeth P. Lind for Associated Builders and Contractors of
    California as Amicus Curiae on behalf of Defendants and Respondents.
    Counsel who argued in Supreme Court (not intended for
    publication with opinion):
    Stuart B. Esner
    Esner, Chang & Boyer
    234 East Colorado Boulevard, Suite 975
    Pasadena, CA 91101
    (626) 535-9860
    Tomas E. Margain
    Justice At Work Law Group
    84 West Santa Clara Street, Suite 790
    San Jose, CA 95113
    (408) 317-1100
    Paul V. Simpson
    Simpson, Garrity, Innes & Jacuzzi, P.C.
    601 Gateway Boulevard, Suite 950
    South San Francisco, CA 94080
    (650) 615-4860
    Robert R. Roginson
    Ogletree, Deakins, Nash, Smoak & Stewart, P.C.
    400 South Hope Street, Suite 1200
    Los Angeles, CA 90071
    (213) 457-5873