Solus Indus. Innovations, LLC v. Superior Court of Orange Cnty. , 228 Cal. Rptr. 3d 406 ( 2018 )


Menu:
  • Filed 2/8/18
    IN THE SUPREME COURT OF CALIFORNIA
    SOLUS INDUSTRIAL                    )
    INNOVATIONS, LLC, et al.,           )
    )
    Petitioners,             )
    )                             S222314
    v.                       )
    )                       Ct.App. 4/3 G047661
    THE SUPERIOR COURT OF ORANGE )
    COUNTY,                             )
    )                         Orange County
    Respondent;              )                Super. Ct. No. 30-2012-00581868
    )
    THE PEOPLE,                         )
    )
    Real Party in Interest.  )
    ____________________________________)
    The Orange County District Attorney brought an action for civil penalties
    under this state’s unfair competition law (UCL; Bus. & Prof. Code, § 17200) and
    fair advertising law (FAL; id., § 17500) against an employer. The action alleged
    the employer violated workplace safety standards established by the state
    occupational safety and health law (Cal/OSHA; Lab. Code, § 6300 et seq.) and
    attendant regulations. The employer contended, and the Court of Appeal
    concluded, that the district attorney’s action was preempted by the federal
    Occupational Safety and Health Act of 1970 (federal OSH Act; 
    29 U.S.C. § 651
     et
    seq.).
    1
    For the reasons set forth below, we conclude that the federal act does not
    preempt unfair competition and consumer protection claims based on workplace
    safety and health violations when, as in California, there is a state plan approved
    by the federal Secretary of Labor. The district attorney’s use of UCL and FAL
    causes of action does not encroach on a field fully occupied by federal law, nor
    does it stand as an obstacle to the accomplishment of the federal objective of
    ensuring a nationwide minimum standard of workplace protection. In addition,
    the federal act’s structure and language do not reflect a clear purpose of Congress
    to preempt such claims. Therefore, we reverse the judgment of the Court of
    Appeal.
    I. Background
    A. Factual and procedural history
    Our statement of facts and procedure is based largely on the opinion of the
    Court of Appeal.
    Solus Industrial Innovations, LLC (Solus) manufactures plastics at its
    Orange County facility. In 2007, it installed at the facility an electric water heater
    that was designed for residential use. In March 2009, the water heater exploded,
    killing two employees.
    The Division of Occupational Safety and Health1 investigated and
    “determined the explosion had been caused by a failed safety valve and the lack of
    ‘any other suitable safety features on the heater’ due to ‘manipulation and
    misuse.’ ” In an administrative proceeding, the agency charged Solus with five
    1      The Division of Occupational Safety and Health (sometimes hereafter
    Division) functions within the state Department of Industrial Relations.
    Sometimes referred to as Cal/OSHA, the Division holds general authority to
    enforce the state occupational safety and health law. (See p. 9, post.)
    2
    violations of state occupational safety and health regulations. (Cal. Code Regs.,
    tit. 8, § 467, subd. (a) [failure to provide a proper safety valve]; id., § 3328, subds.
    (a) [permitting unsafe operation of machinery and equipment], (b) [improper
    maintenance of machinery and equipment], (f) [failing to use good engineering
    practices], (h) [permitting unqualified and untrained personnel to operate and
    maintain machinery and equipment].) The Division also cited Solus with a willful
    violation for failing to maintain the water heater in a safe condition.
    In addition, because two employees had died and there was evidence of
    violations of law, the Division forwarded the investigation results to the District
    Attorney of Orange County. (See Lab. Code, § 6315, subd. (g).) In March 2012,
    the district attorney filed criminal charges against Solus’s plant manager and its
    maintenance supervisor for felony violations of Labor Code section 6425,
    subdivision (a).
    The district attorney also filed the present civil action against Solus. The
    complaint alleged four causes of action, “all based on the same worker health and
    safety standards placed at issue in the administrative proceedings.” Only two of
    the causes of action are at issue here. One “allege[d] that Solus’s failure to
    comply with workplace safety standards amount[ed] to an unlawful, unfair and
    fraudulent business practice under Business and Professions Code section 17200,
    and the district attorney request[ed] imposition of civil penalties as a consequence
    of that practice, in the amount of up to $2,500 per day, per employee, for the
    period from November 29, 2007, through March 19, 2009.” The second was a
    claim that Solus “made numerous false and misleading representations concerning
    its commitment to workplace safety and its compliance with all applicable
    workplace safety standards, and as a result of those false and misleading
    statements, Solus was allegedly able to retain employees and customers in
    3
    violation of Business and Professions Code section 17500.” The district attorney
    requested imposition of civil penalties in the same amount for the same period.2
    Solus demurred on the ground that the two causes of action were preempted
    by the federal OSH Act. (
    29 U.S.C. § 651
     et seq.) The trial court overruled the
    demurrer. Solus challenged the order and the Court of Appeal summarily denied
    Solus’s petition for writ of mandate. This court granted the petition for review
    filed by the district attorney and transferred the matter back to the Court of Appeal
    with directions to issue an order to show cause.
    The Court of Appeal issued its order to show cause and concluded that the
    federal OSH Act preempted the district attorney’s UCL and FAL claims. Its
    conclusion was based in part on a misapprehension concerning the date that unfair
    competition penalty provisions were enacted compared with the date the federal
    Secretary of Labor approved California’s occupational safety and health plan.
    This court granted review and transferred the matter back to the Court of Appeal
    for reconsideration in light of former section 3370.1 of the Civil Code, a provision
    enacted in 1972. As the Court of Appeal acknowledged in its second opinion, this
    statute, which provided penalties for unfair competition, “was in effect when
    California’s plan was approved” by the federal Secretary of Labor. The Court of
    2      The other two causes of action were for: (1) recovery of civil penalties
    under Labor Code section 6428 for “serious violations” of workplace safety
    standards and (2) recovery of civil penalties under Labor Code section 6429 for
    “willful violation” of workplace safety standards. The trial court sustained Solus’s
    demurrer without leave to amend with respect to these claims. The Court of
    Appeal summarily denied the district attorney’s petition for writ of mandate
    challenging this order. This court granted review and transferred the matter back
    to the Court of Appeal. In a separate opinion the Court of Appeal affirmed,
    agreeing with the trial court that the district attorney lacked standing to bring those
    two claims. (People v. Superior Court (Solus Industrial Innovations, LLC) (2014)
    
    224 Cal.App.4th 33
    .)
    4
    Appeal nonetheless concluded that the UCL and FAL claims were preempted by
    the federal statute. In its view, federal law preempted any state occupational
    safety and health standard or method of enforcing such a standard that did not
    appear in the California occupational safety and health plan submitted to and
    approved by the federal Secretary of Labor.
    This court granted the district attorney’s petition for review.
    B. Relevant federal and state laws
    1. Federal law
    As explained below, the federal OSH Act (
    29 U.S.C. § 651
     et seq.)
    provides that the federal Secretary of Labor shall adopt standards for occupational
    safety and health, but federal law does not preempt state authority when (1) there
    is no federal standard or (2) there is a state plan for occupational safety and health
    that has been approved at the federal level.
    It is settled that the purpose of the 1970 federal enactment was to supply a
    nationwide floor of protection for workers. (
    29 U.S.C. § 651
    (b) [Congress’s intent
    was “to assure so far as possible every working man and woman in the Nation safe
    and healthful working conditions”]; United Air Lines, Inc. v. Occupational Safety
    & Health Appeals Bd. (1982) 
    32 Cal.3d 762
    , 772 (United Air Lines) [the federal
    act intended “to address the problem of uneven and inadequate state protection of
    employee health and safety” and “establish a nationwide ‘floor’ of minimally
    necessary safeguards”].)
    The federal OSH Act grants the federal Department of Labor the authority
    to provide and enforce mandatory national standards. (
    29 U.S.C. § 651
    (b)(3); see
    also 
    id.,
     § 655 [calling for promulgation of standards].) The federal Secretary of
    Labor has delegated certain authority to the federal Occupational Safety and
    Health Administration (hereafter sometimes federal OSHA) to adopt standards.
    5
    (Gade v. National Solid Wastes Management Ass’n (1992) 
    505 U.S. 88
    , 92 (Gade)
    (plur. opn. of O’Connor, J.).) If the Secretary of Labor has not promulgated a
    federal standard with respect to an occupational safety or health issue, states may
    supply their own standards. (
    29 U.S.C. § 667
    (a) [“Nothing in this chapter shall
    prevent any State agency or court from asserting jurisdiction under State law over
    any occupational safety or health issue with respect to which no standard is in
    effect under section 655 of this title”].)3
    3       Solus has identified several standards that it contends apply to the facts of
    this case. (
    29 C.F.R. § 1910
    , subpts. H, M (2017); 
    id.,
     § 1910.147 (2017).)
    Section 1910, subpart H, entitled “Hazardous Materials,” concerns, in part, the
    handling, storage, and use of compressed gas cylinders and tanks (
    29 C.F.R. §§ 1910.101-1910.121
     (2017)), but these provisions do not appear to have any
    application to the allegations of the complaint, which assert that Solus removed a
    water heater’s safety features to force it to operate beyond its capacity. Nor does
    section 1910, subpart M, entitled “Compressed Gas and Compressed Air
    Equipment,” which applies to “compressed air receivers, and other equipment
    used in providing and utilizing compressed air for performing operations such as
    cleaning, drilling, hoisting, and chipping” (
    29 C.F.R. § 1910.169
    (a) (2017)),
    appear to apply to these allegations. Finally, the provisions of 29 Code of Federal
    Regulations section 1910.147 (2017) set forth steps that must be taken to control
    hazardous energy during maintenance of a machine, but it appears from the
    complaint that the explosion occurred as workers arrived to address a problem,
    before any maintenance procedures were undertaken.
    Solus also cites federal OSHA’s general duty clause, which states that an
    employer “(1) shall furnish . . . employment and a place of employment which are
    free from recognized hazards that are causing or are likely to cause death or
    serious physical harm to his employees.” (
    29 U.S.C. § 654
    (a).) However, the
    standards to which 29 United States Code section 667, subdivision (a) refers are
    those promulgated by the federal Secretary of Labor under 29 United States Code
    section 655; the general duty clause is not such a “standard.”
    Although we are skeptical that the cited standards apply here, we note that
    the case has been litigated based on the view that a federal standard applies to the
    allegations, and we will assume without deciding that there is a federal standard
    relevant to the claims.
    6
    Moreover, even when there are federal standards on an issue relating to
    occupational safety and health, a state may assume responsibility for developing
    and enforcing state standards on such issues by developing and submitting to the
    Secretary of Labor a plan to “preempt” federal standards. In a provision entitled
    “Submission of State plan for development and enforcement of State standards to
    preempt applicable Federal standards,” the federal OSH Act states: “Any State
    which, at any time, desires to assume responsibility for development and
    enforcement therein of occupational safety and health standards relating to any
    occupational safety or health issue with respect to which a Federal standard has
    been promulgated under section 655 of this title shall submit a State plan for the
    development of such standards and their enforcement.” (
    29 U.S.C. § 667
    (b).)
    The Secretary of Labor is required to approve a state’s plan or any
    modification of its plan if, in the Secretary’s judgment, a number of conditions are
    met. (
    29 U.S.C. § 667
    (c).) First, approval is conditioned on the plan designating a
    state agency or agencies to administer the plan throughout the state. (Id.,
    § 667(c)(1).) Second, approval is conditioned on the plan providing standards and
    enforcement at least as effective as parallel federal standards. (Id., § 667(c)(2)
    [the state plan “provides for the development and enforcement of safety and health
    standards relating to one or more safety or health issues, which standards (and the
    enforcement of which standards) are or will be at least as effective in providing
    safe and healthful employment and places of employment as the standards
    promulgated under section 655 which relate to the same issues, and which
    standards, when applicable to products which are distributed or used in interstate
    commerce, are required by compelling local conditions and do not unduly burden
    interstate commerce”].) Other conditions include that the state plan contain
    satisfactory assurances that the designated administrative agency or agencies
    “have or will have the legal authority and qualified personnel necessary for . . .
    7
    enforcement,” and that the state will devote adequate funds to administration and
    enforcement. (Id., § 667(c)(4) & (5).) The Secretary must give adequate notice
    and an opportunity for a hearing before rejecting a state plan. (Id., § 667(d).)
    The Secretary of Labor retains some ongoing authority over state plans.
    For example, the Secretary must “make a continuing evaluation of the manner in
    which each State having a plan . . . is carrying out such plan.” (
    29 U.S.C. § 667
    (f).) If the Secretary finds, after “due notice and opportunity for a hearing,”
    that the state has failed to “comply substantially” with its plan, the Secretary “shall
    notify the State agency of [the] withdrawal of approval of such plan . . . .” (Ibid.;
    see also 
    id.,
     subd. (g) [judicial review of withdrawal of approval].) A federal
    regulation adds that states must submit changes to their plans to the Secretary of
    Labor for approval. (
    29 C.F.R. § 1953.4
    (d) (2017).)
    Finally, the federal OSH Act contains a broad savings clause: “Nothing in
    this chapter shall be construed to supersede or in any manner affect any
    workmen’s compensation law or to enlarge or diminish or affect in any other
    manner the common law or statutory rights, duties, or liabilities of employers and
    employees under any law with respect to injuries, diseases, or death of employees
    arising out of, or in the course of, employment” (
    29 U.S.C. § 653
    (b)(4).)
    2. Cal/OSHA
    Long before the federal enactment, California regulated occupational safety
    and health. (United Air Lines, supra, 32 Cal.3d at p. 766.) As we have recounted:
    “ ‘In 1913 . . . the Legislature enacted a . . . bill creating the Industrial Accident
    Commission, and vested that body, inter alia, with broad authority to adopt
    regulations relating to the safety and welfare of employees.’ ” (Ibid.) That
    “ ‘broad authority to regulate safety in places of employment’ ” was transferred to
    another body in 1945 and then, “[i]n 1973, as part of a comprehensive revision of
    8
    California’s occupational health and safety statutes in response to the Federal
    Occupational Safety and Health Act of 1970, the [regulatory board] was
    reconstituted . . . and the division of Occupational Safety and Health was
    designated as the administrative entity.” (Ibid.)
    The 1973 legislation largely mirrored earlier state enactments. (Lab. Code,
    § 6300 et seq.; United Air Lines, supra, 32 Cal.3d at p. 767.) The declared
    purpose was to permit California to “assume responsibility for development and
    enforcement of occupational safety and health standards under a state plan
    pursuant to [the federal enactment].” (Stats. 1973, ch. 993, § 107, pp. 1954-1955;
    see United Air Lines, supra, 32 Cal.3d at p. 766; California Lab. Federation v.
    Occupational Safety & Health Stds. Bd. (1990) 
    221 Cal.App.3d 1547
    , 1552 (Cal.
    Labor Fed.).)
    The Department of Industrial Relations (Department) was assigned the
    overall task of administering the state plan for “development and enforcement of
    occupational safety and health standards” relating to issues covered by the federal
    OSH Act standards (Lab. Code, § 50.7, subd. (a); see id., § 6302), and the state
    plan was to be “consistent with the provisions of state law governing occupational
    safety and health, including, but not limited to [Cal/OSHA legislation].” (Id.,
    § 50.7, subd. (a).) Within the Department, the Occupational Safety and Health
    Standards Board (Board) has authority to adopt, amend, or repeal standards (id.,
    § 142.3), and the Board’s authority to adopt occupational safety and health
    standards is exclusive. (Id., § 142.3, subd. (a)(1).) Also within the Department is
    the Division of Occupational Safety and Health. The Division is required to study
    federal standards, propose modifications of California standards to the Board,
    evaluate proposed standards for the Board, and, on issues not covered by federal
    standards, “maintain surveillance, determine the necessity for standards, [and]
    develop and present proposed standards to the board.” (Id., § 147.1, subd. (c); see
    9
    id., subds. (a), (b), (d).) The Division also holds general enforcement powers over
    any “place of employment.” (Id., § 6307, see also id., §§ 142, 6308.)
    The state law includes various enforcement and civil and criminal penalty
    provisions. (See Lab. Code, §§ 6317 [citations, abatement, civil penalties], 6425
    [criminal penalties for violations causing death or serious impairment], 6428 [civil
    penalties for serious violations], 6429 [civil penalties for willful or repeated
    violations]; 6430 [civil penalties for failure to correction violations].) State
    regulations include those governing water heaters.
    The Division’s authority over “places of employment” is not exclusive, and
    does not include places “where the health and safety jurisdiction is vested by law
    in, and actively exercised by, any state or federal agency other than the division.”
    (Lab. Code, § 6303, subd. (a); see also United Air Lines, supra, 32 Cal.3d at
    pp. 767, 770-771 [Lab. Code, § 6303, subd. (a) divests the division of jurisdiction
    solely when another agency is under a mandate to provide for worker protection].)
    Cal/OSHA provisions also recognize some concurrent local entity jurisdiction.
    (See Lab. Code, § 6316 [except as otherwise provided in Cal/OSHA, the
    governing bodies of local government entities generally are not deprived of “any
    power or jurisdiction over or relative to any place of employment”]; see id., § 144,
    subds. (a) [authority of agencies other than the Division to “assist in the
    administration or enforcement” of standards “shall be contained in a written
    agreement with the Department . . . .”], (e) [no limitation on local agency authority
    “as to any matter other than the enforcement of occupational safety and health
    standards”]; Coyle v. Alland & Company, Inc. (1958) 
    158 Cal.App.2d 664
    , 669-
    670.) Consistent with this concurrent jurisdiction, the Division’s Bureau of
    Investigations ordinarily must forward its investigative results to local prosecutors
    in cases of serious injury or death. (Lab. Code, § 6315, subds. (g), (i).)
    10
    The Department submitted a Cal/OSHA plan to the federal Secretary of
    Labor, and it was approved in May 1973. (
    29 C.F.R. § 1952.7
    (a) (2017).)4
    Descriptions of the California plan and amendments that formerly appeared in
    federal regulations (see 29 C.F.R. former § 1952.170 (1999)5 have been removed
    by federal OSHA in an effort at streamlining. (Text removed by 80 Fed.Reg.
    78977 (Dec. 18, 2015) (approving proposal of federal OSHA Aug. 18, 2015); 80
    Fed.Reg. 49897 (Aug. 18, 2015) [“This document . . . amends OSHA regulations
    to remove the detailed descriptions of State plan coverage, purely historical data,
    4       The federal regulation provides: “(a) The California State plan received
    initial approval on May 1, 1973. [¶] (b) [federal] OSHA entered into an
    operational status agreement with California. [¶] (c) The plan covers all private-
    sector employers and employees, with several notable exceptions, as well as State
    and Local government employers and employees, within the State. For current
    information on these exceptions and for additional details about the plan, please
    visit [a federal Department of Labor website].” (
    29 C.F.R. § 1952.7
     (2017).)
    The referenced website contains a very brief summary of the plan, noting
    that the Division “implements the California State Plan’s enforcement . . . .”
    (U.S. Dept. of Labor, OSHA Plans  [as of February 8, 2018].)
    The referenced “operational status agreement” notes that the Division “is
    designated as the state agency responsible for administering the State Plan,” that,
    with certain limited exceptions, “concurrent federal enforcement authority was
    suspended with regard to federal occupational safety and health standards in issues
    covered by the State Plan,” and that “concurrent federal enforcement authority
    would not be initiated with regard to any federal occupational safety and health
    standards in issues covered by the State Plan.” (82 Fed.Reg. 25631 (June 2,
    2017).)
    5       The former provision referred to enforcement by the Division, and noted
    that then-existing state safety and health standards would be “continued unless
    amended by a State occupational safety and health standards board to be created.”
    (29 C.F.R. former § 1952.170(a) (1999).) It observed that the state plan “set out
    goals” and acknowledged that certain enabling legislation was still to be enacted
    by the state Legislature. (Id., former § 1952.170(e) (1999).)
    11
    and other unnecessarily codified information . . . . The purpose of these revisions
    is to eliminate the unnecessary codification of material in the Code of Federal
    Regulations . . . .”].) There appears to be no dispute, however, that the Cal/OSHA
    standards, the violation of which was the basis for the district attorney’s UCL and
    FAL claims, were part of the approved California plan, nor does there appear to be
    any dispute that use of UCL and FAL claims by local prosecutors pursuing civil
    actions was not mentioned in the plan’s enforcement provisions. (See, e.g., Cal.
    Code Regs., tit. 8, § 344.50 [Division of Occupational Safety and Health
    compliance personnel conduct civil inspections and enforcement actions but lack
    authority to initiate criminal proceedings].)
    Cal/OSHA standards have undergone revisions that were submitted for and
    secured federal approval. For example, in response to a state court action by labor
    representatives, the state Board amended the state standards to reflect the
    requirements of the state’s then-newly adopted Safe Drinking Water and Toxic
    Enforcement Act of 1986. (Health & Saf. Code § 25249.5 et seq.; see Cal. Labor
    Federation, supra, 221 Cal.App.3d at pp. 1554, 1557-1559; see Dept. of Labor,
    Supplement to California State Plan; Approval, 62 Fed.Reg. 31159 (June 6,
    1997).)
    In 1987, the Governor of California attempted to reassign exclusive control
    over occupational safety and health matters to the federal government. He notified
    the federal Secretary of Labor of his intent and reduced the Department’s budget.
    (See Cal. Labor Federation, supra, 221 Cal.App.3d at p. 1552.) The voters,
    however, in 1988 approved a proposition that defeated the Governor’s plan and
    affirmed the central role of state law in these matters. (Lab. Code, § 50.7, subd.
    (a), enacted by Prop. 97, as approved by voters, Gen. Elec. (Nov. 8, 1988).) The
    proposition’s preamble stated the enactment’s goal: “It is the purpose of this Act
    to restore California control over private sector safety and health, which the state
    12
    has provided for since 1913, and has administered since 1973 through Cal/OSHA.
    Pursuant to Article XIV, Section 4, of the California Constitution, state
    jurisdiction over worker safety and health should not be limited, eliminated or
    otherwise restricted, unless absolutely required by the federal Constitution.”
    (Ballot Pamp. Gen. Elec. (Nov. 8, 1988) text of Prop. 97, p. 75.)
    C. General preemption principles
    “ ‘The supremacy clause of the United States Constitution establishes a
    constitutional choice-of-law rule, makes federal law paramount, and vests
    Congress with the power to preempt state law.’ [Citations.] Similarly, federal
    agencies, acting pursuant to authorization from Congress, can issue regulations
    that override state requirements. [Citations.] Preemption is foremost a question of
    congressional intent: did Congress, expressly or implicitly, seek to displace state
    law?” (Quesada v. Herb Thyme Farms, Inc. (2015) 
    62 Cal.4th 298
    , 307-308
    (Quesada).)
    We “conduct[] the search for congressional intent through the lens of a
    presumption against preemption. [Citations.] The presumption is founded on
    ‘respect for the States as “independent sovereigns in our federal system” ’; that
    respect requires courts ‘to assume that “Congress does not cavalierly pre-empt
    state-law causes of action.” ’ [Citation.] The strength of the presumption is
    heightened in areas where the subject matter has been the long-standing subject of
    state regulation in the first instance; where federal law touches ‘a field that “ ‘has
    been traditionally occupied by the States,’ ” ’ the party seeking to show
    preemption ‘bear[s] the considerable burden of overcoming “the starting
    presumption that Congress does not intend to supplant state law.” ’ ” (Quesada,
    supra, 62 Cal.4th at pp. 312-313, see also id. at p. 315 [Rice v. Santa Fe Elevator
    Corp. (1947) 
    331 U.S. 218
    , 230, which first recognized the assumption that the
    13
    historic police powers of the state are not superseded, remains good law].) The
    presumption applies to the scope as well as the existence of preemption.
    (Olszewski v. Scripps Health (2003) 
    30 Cal.4th 798
    , 815 (Olszewski); see also
    Brown v. Mortensen (2011) 
    51 Cal.4th 1052
    , 1064.)
    “We have identified several species of preemption. Congress may
    expressly preempt state law through an explicit preemption clause, or courts may
    imply preemption under the field, conflict, or obstacle preemption doctrines.”
    (Quesada, supra, 62 Cal.4th at p. 308.) Implied preemption, for its part, may be
    found “(i) when it is clear that Congress intended, by comprehensive legislation, to
    occupy the entire field of regulation, leaving no room for the states to supplement
    federal law [citation]; (ii) when compliance with both federal and state regulations
    is an impossibility [citation]; or (iii) when state law ‘stands as an obstacle to the
    accomplishment and execution of the full purposes and objectives of Congress.’ ”
    (Bronco Wine Co. v. Jolly (2004) 
    33 Cal.4th 943
    , 955, italics added; see also Farm
    Raised Salmon Cases (2008) 
    42 Cal.4th 1077
    , 1087.) Because preemption
    questions turn on Congressional intent, a reviewing court begins with the text of
    the federal statute, “the source of the best evidence concerning the breadth of
    Congress’s preemptive intent.” (Quesada, supra, 62 Cal.4th at p. 308.)
    D. Federal OSH Act preemption principles announced by the high
    court
    The United States Supreme Court examined the preemptive effect of the
    federal OSH Act in Gade, 
    supra,
     
    505 U.S. 88
    . The high court’s plurality and
    concurring opinions offer helpful interpretive guidance, but as explained below, in
    Gade, there was no approved state plan, so the extent to which an approved state
    plan displaces federal authority was not at issue.
    In Gade, Illinois state laws imposed special requirements for persons
    working with hazardous waste, including training and licensing requirements.
    14
    There was a federal occupational safety and health standard in effect concerning
    training and certification of persons working with hazardous wastes. The stated
    purpose of the Illinois laws was to “ ‘promote job safety’ ” and “ ‘protect life, limb
    and property.’ ” (Gade, 
    supra,
     505 U.S. at p. 91 (plur. opn. of O’Connor, J.).)
    Two issues were raised by those laws. The first was whether, in the absence of an
    approved state plan, the federal OSH Act preempted efforts by the state to
    supplement the existing and applicable federal occupational safety and health
    standards. The second issue was whether state statutes having an asserted dual
    purpose of protecting public as well as worker safety would be preempted. A
    majority of the court concluded that the state law was preempted, but there was
    disagreement whether implied or express preemption was involved. (Id., at
    pp. 91-109 (plur. opn. of O’Connor, J.); id., at pp. 109-114 (conc. opn. of
    Kennedy, J.).)
    The high court’s plurality opinion used an implied preemption analysis.
    The plurality found that when a federal occupational safety and health standard
    exists and the state has not presented a plan to the Secretary of Labor and obtained
    approval, the application of a state occupational safety and health standard would
    be an obstacle to achieving Congress’s goal that only a single regime of
    occupational safety and health regulation should apply. The plurality held that
    “nonapproved state regulation of occupational safety and health issues for which a
    federal standard is in effect is impliedly pre-empted as in conflict with the full
    purposes and objectives of the OSH Act. [Citation.] The design of the statute
    persuades us that Congress intended to subject employers and employees to only
    one set of regulations, be it federal or state, and that the only way a State may
    regulate a [federally]-regulated occupational safety and health issue is pursuant to
    an approved state plan that displaces the federal standards.” (Gade, supra, 505
    U.S. at pp. 98-99.)
    15
    The plurality opinion relied on 29 United States Code section 667(b),
    specifically the subdivision’s language directing that a state “shall” submit a plan
    for federal approval if a state wishes to “assume responsibility” for development
    and enforcement of occupational safety and health standards when a federal
    standard already exists. (Gade, supra, 505 U.S. at p. 99.) “The unavoidable
    implication of this provision is that a State may not enforce its own occupational
    safety and health standards without obtaining the Secretary’s approval . . . .”
    (Ibid.) In the plurality’s view, the federal OSH Act as a whole indicated that “a
    State may develop an occupational safety and health program tailored to its own
    needs, but only if it is willing completely to displace the applicable federal
    regulations.” (Id., at p. 100, italics added.)
    The plurality opinion also pointed to 29 United States Code section 667(a)
    — which acknowledges the authority of states to exercise jurisdiction where there
    is no federal standard — reasoning that the subdivision’s “preservation of state
    authority in the absence of a federal standard presupposes a background pre-
    emption of all state occupational safety and health standards whenever a federal
    standard governing the same issue is in effect.” (Gade, supra, 505 U.S. at p. 100,
    italics added.) And pointing to 29 United States Code section 667(c), which
    establishes conditions for plan approval, the Gade decision observed that the
    conditions would be nullified if states could simply adopt their own standards
    without going through the approval process. (Id., at p. 100.)
    Subdivisions (f) and (h) of 29 United States Code section 667 also
    confirmed the plurality’s view that states cannot act when there is no approved
    state plan but a federal standard does exist. Because subdivision (f) of section 667
    gave the federal Secretary of Labor the power to withdraw approval of a state
    plan, the decision reasoned that “[o]nce approval is withdrawn, the plan ‘cease[s]
    to be in effect’ and the State is permitted to assert jurisdiction under its
    16
    occupational health and safety law only for those cases ‘commenced before the
    withdrawal of the plan.’ ” (Gade, supra, 505 U.S. at p. 101.) This language
    “assumes that the State loses the power to enforce all of its occupational safety and
    health standards once approval is withdrawn.” (Ibid.) And the plurality saw the
    “same assumption of exclusive federal jurisdiction in the absence of an approved
    state plan” in subdivision (h), which permits states to enter temporary agreements
    to enforce their own laws in the two years following the passage of the federal
    OSH Act. (Id., at pp. 101-102.)
    From these provisions, the plurality “conclude[d] that the OSH Act
    precludes any state regulation of an occupational safety or health issue with
    respect to which a federal standard has been established, unless a state plan has
    been submitted and approved pursuant to [ 29 United States Code section 667](b).
    Our review of the Act persuades us that Congress sought to promote occupational
    safety and health while at the same time avoiding duplicative, and possibly
    counterproductive, regulation. It thus established a system of uniform federal
    occupational health and safety standards, but gave States the option of pre-empting
    federal regulations by developing their own occupational safety and health
    programs.” (Gade, supra, 505 US. at p. 102, italics added.)
    Addressing the separate question whether preemption — still in the absence
    of an approved state plan — reached state laws that directly regulated occupational
    safety and health but also were intended to protect public safety, the plurality
    concluded that the preemptive effect of the federal law extended to such “dual
    impact” state laws. (Gade, supra, 505 U.S. at pp. 104-105.) The state argued that
    its laws, which imposed requirements regarding training, testing, and licensing of
    crane and hazardous waste site workers, were intended to promote both public and
    worker safety, and therefore should not be preempted. The plurality disagreed,
    declaring that “dual impact state regulation cannot avoid OSH Act pre-emption
    17
    simply because the regulation serves several objectives rather than one.” (Id. at
    p. 106.) Rather, “[w]hatever the purpose or purposes of the state law, pre-emption
    analysis cannot ignore the effect of the challenged state action on the pre-empted
    field. The key question is thus at what point the state regulation sufficiently
    interferes with federal regulation that it should be deemed pre-empted . . . .” (Id.
    at p. 107, italics added.) The decision concluded that state law that “ ‘constitutes,
    in a direct, clear and substantial way, regulation of worker health and safety’ ”
    would be preempted, whereas “state laws of general applicability (such as laws
    regarding traffic safety or fire safety) that do not conflict with [federal] standards
    and that regulate the conduct of workers and nonworkers alike would generally not
    be pre-empted. Although some laws of general applicability may have a ‘direct
    and substantial’ effect on worker safety, they cannot fairly be characterized as
    ‘occupational’ standards, because they regulate workers simply as members of the
    general public.” (Ibid., italics added.)
    “In sum, a state law requirement that directly, substantially, and
    specifically regulates occupational safety and health is an occupational safety and
    health standard within the meaning of the [federal OSH] Act. . . . If the State
    wishes to enact a dual impact law that regulates an occupational safety or health
    issue for which a federal standard is in effect, . . . the Act requires that the State
    submit a plan for the approval of the Secretary.” (Gade, 
    supra,
     505 U.S. at
    pp. 107-108, italics added.)
    The concurring opinion by Justice Kennedy concluded that the federal law
    expressly preempts state occupational safety and health standards when a federal
    standard is in effect and the state has not submitted a plan for approval, but
    vigorously opposed the plurality’s finding of implied preemption. (Gade, supra,
    505 U.S. at pp. 109-114 (conc. opn. of Kennedy, J.).) In his view, the plurality’s
    analysis failed to surmount the “high threshold” required for a finding that a law is
    18
    preempted because it conflicts with the purpose of a federal law. (Id. at p. 110.)
    He added that such preemption “should be limited to state laws which impose
    prohibitions or obligations which are in direct contradiction to Congress’ primary
    objectives, as conveyed with clarity in the federal legislation.” (Ibid.) The
    concurrence observed no such direct contradiction between federal standards and a
    “concurrent, supplementary state scheme.” (Ibid.) Rather, all the inferences from
    29 United States Code section 667(b)’s express terms direct the preemption of
    state occupational safety standards in the absence of a state plan approved by the
    Secretary of Labor. Absent those express terms, Justice Kennedy “would not say
    that state supplementary regulation conflicts with the purposes of the federal OSH
    Act[] or that it ‘ “interferes with the methods by which the federal statute was
    designed to reach [its] goal.” ’ [Citation.]” (Id. at p. 111.)
    According to the concurrence, the plurality opinion failed to comply with a
    presumption that “ ‘historic police powers of the States’ ” are not preempted
    “ ‘unless that was the clear and manifest purpose of Congress.’ ” (Gade, supra,
    505 U.S. at p 111.) In addition, Justice Kennedy criticized the plurality’s method
    of inferring the congressional purpose, saying that a “freewheeling judicial inquiry
    into whether a state statute is in tension with federal objectives would undercut the
    principle that it is Congress rather than the courts that pre-empts state law.” (Ibid.)
    Although Justice Kennedy disagreed with the plurality’s conclusion that
    preemption was implied, he concluded that the plurality’s analysis “amply
    demonstrates” express preemption. (Gade, supra, 505 U.S. at p. 112.) In his
    view, although 29 United States Code section 667(b), which authorizes a state to
    assume responsibility for occupational safety and health issues, lacked the “magic
    words” of preemption (Gade, 
    supra,
     505 U.S. at p. 112), “[t]he statute is clear:
    When a State desires to assume responsibility for an occupational safety and
    health issue already addressed by the Federal Government, it must submit a state
    19
    plan. The most reasonable inference from this language is that when a State does
    not submit and secure approval of a state plan, it may not enforce occupational
    safety and health standards in that area.” (Id. at pp. 112-113 [also reading the
    language of 29 U.S.C. 667(b) in conjunction with section 667(a), (c), and (f)].)
    Justice Kennedy found it unnecessary to “reiterate the plurality’s persuasive
    discussion on this point.” (Gade, 
    supra,
     505 U.S. at p. 113.) The plurality
    similarly observed that although the two opinions disagreed concerning the
    category of preemption, they agreed on federal OSHA’s preemptive scope, based
    on the language of 29 United States Code section 667. (Id. at p. 104, fn. 2.)
    II. Discussion
    The Court of Appeal held that the UCL and FAL claims are preempted by
    the federal OSH Act both expressly and through application of the principles of
    implied preemption. It concluded that Congress has essentially occupied the entire
    field of workplace safety regulation and enforcement other than workers’
    compensation and the precise provisions of an approved state plan. It reasoned
    that “[b]ecause the [federal] OSH Act allows a state to avoid federal preemption
    only if it obtains federal approval of its own plan, it necessarily follows that a state
    has no authority to enact and enforce laws governing workplace safety which fall
    outside of that approved plan.” In its view, the district attorney’s use of UCL and
    FAL actions based upon violations of approved Cal/OSHA standards was an
    attempt to govern workplace safety without securing approval by the federal
    Secretary of Labor.
    As the Court of Appeal observed, the federal OSH Act expressly states
    what is not preempted — state laws governing workers’ compensation, a broad
    category of statutory and common law actions touching on worker safety, and any
    occupational safety or health issue as to which there is no federal standard. (
    29 U.S.C. §§ 653
    (b)(4) [workers’ compensation and other laws related to worker
    20
    safety], 667(a) [no federal standard].) As the Court of Appeal’s analysis further
    reflects, the federal OSH Act does not expressly describe what state regulation is
    preempted. This omission does not preclude a finding of explicit preemption; as
    Justice Kennedy noted in Gade, the high court has “never required any particular
    magic words” to establish express preemption. (Gade, supra, 505 U.S. at p. 112.)
    But as illustrated by Justice Kennedy’s concurring opinion, when a court attempts
    to discern from a statutory scheme the expression of an intent to displace state law,
    the analysis may be substantially similar to an implied preemption analysis.
    Therefore, we will first address whether preemption of the UCL and FAL claims is
    implied. As will be seen, this analysis also resolves the issue of whether the
    federal scheme explicitly preempts these claims.
    A. No implied preemption of UCL and FAL claims
    1. Field preemption
    a. The field preempted is narrow
    In enacting the federal OSH Act, Congress entered “a field that traditionally
    had been occupied by the States. Federal regulation of the workplace was not
    intended to be all encompassing, however.” (Gade, 
    supra,
     505 U.S. at p. 96 (plur.
    opn. of O’Connor, J.); see United Air Lines, supra, 32 Cal.3d at p. 772 [“Despite a
    broad authorization to [the federal OSH Act] . . . , the act did not foreclose other
    federal agencies or states from exercising . . . jurisdiction” over occupational
    safety and health].) Unlike some federal statutes, 29 United States Code section
    667 does not employ broad language preempting all state regulation, laws, or
    remedies relating to, concerning, or merely touching on the issue at hand, namely
    occupational safety and health. (See, e.g., 21 U.S.C. § 360k(a) [except as
    specifically provided, “no State . . . may establish or continue in effect with
    respect to [medical devices] any requirement . . . different from, or in addition to,
    21
    any requirement [under the specific federal law]”; 
    29 U.S.C. § 1144
    (a) [ERISA
    preempts “any and all State laws insofar as they may now or hereafter relate to any
    employee benefit plan”]; 
    49 U.S.C. § 14501
    (c)(1) [“[A] State . . . may not enact or
    enforce a law, regulation, or other provision having the force and effect of law
    related to a price, route, or service of any motor carrier . . . with respect to the
    transportation of property”]; 
    id.,
     § 41713(a)(4)(A) [“[A] State . . . may not enact or
    enforce a law . . . related to a rate, route, or service of an air carrier”].)
    Moreover, various elements of the federal OSH Act convince us that the
    preempted field is narrow. First, we have seen that when there is no federal
    standard, there is no preemption. (
    29 U.S.C. § 667
    (a).) This provision
    acknowledges that federal authority does not occupy the entire field. Rather,
    states retain authority freely to apply their own law in the field of occupational
    safety or health when the Secretary has not promulgated an applicable federal
    standard.
    Second, even when there are federal standards, states may “assume
    responsibility for development and enforcement” of state occupational safety and
    health standards, provided the state submits and gains approval for a state plan.
    (
    29 U.S.C. § 667
    (b).) Under the terms of the statute, an approved state plan
    “preempts” federal standards. (
    29 U.S.C. § 667
    (b) [entitled “Submission of State
    plan for development and enforcement of State standards to preempt applicable
    Federal standards”]; see also Gade, 
    supra,
     505 U.S. at p. 119 (dis. opn. of Souter,
    J.) [this heading was “enacted as part of the statute and properly [may be]
    considered under our canons of construction”].) In other words, once the state
    plan is adopted and approved, state law has the effect of broadly preempting
    parallel federal law. (See Gade, 
    supra,
     505 U.S. at pp. 96-97 (plur. opn. of
    O’Connor, J.) [observing that 
    29 U.S.C. § 667
    (b) “gave the States the option of
    pre-empting federal regulation entirely”]; United Air Lines, supra, 32 Cal.3d at
    22
    p. 772 [adoption of an approved plan “removes federal preemption so that the state
    may exercise its own sovereign powers over occupational safety and health”].) In
    addition, states can provide greater protection if they adopt their own plans with
    standards and enforcement that are at least as protective as federal law. (
    29 U.S.C. § 667
    (c)(2).)
    We acknowledge that the Secretary of Labor has authority to approve
    modifications to a state’s plan (
    29 U.S.C. § 667
    (c)) and “shall . . . make a
    continuing evaluation of the manner in which each State having a plan . . . is
    carrying out such plan.” (Id., § 667(f).) Notwithstanding these provisions, the
    federal OSH Act as a whole does not suggest that the preempted field
    encompasses all means of enforcement not specifically included in the state’s
    approved plan. On the contrary, the federal OSH Act encourages states to
    “assume the fullest responsibility for the administration and enforcement of their
    occupational safety and health laws.” (
    29 U.S.C. § 651
    (b)(11).) In addition, it
    directs that the Secretary “shall” approve a conforming state plan or modification,
    and places administrative limits on the Secretary of Labor’s discretion to reject
    state plans. (Id., § 667(d).) And as we have observed, once a state plan is
    approved, it is federal, not state, law that must give way. (
    29 C.F.R. § 1953.3
    (a)
    (2017) [federal approval of a state plan “in effect removes the barrier of Federal
    preemption, and permits the State to adopt and enforce State standards,” including
    adopting and implementing modifications].) Finally, even if any new enforcement
    method that is related to an existing approved standard should be submitted to the
    Secretary — a question we need not answer — it does not follow that the new
    method is preempted until approved. State modifications to an approved plan go
    into effect immediately, subject to a review by the Secretary. (67 Fed.Reg. 60122
    (Sept. 25, 2002); see also 62 Fed.Reg., supra, at p. 31165 [a modification “takes
    effect prior to and pending OSHA review of the modification”].)
    23
    Third, the federal OSH Act’s savings clause (29 U.S.C.§ 653(b)(4)) leads
    us to infer a narrow field of implied preemption. That provision disclaims any
    intent to interfere with state law in a broad domain affecting occupational safety
    and health, whether or not there is an approved state plan. Specifically,
    notwithstanding the existence of federal standards, not only are state workers’
    compensation actions not preempted, but state tort claims and criminal
    prosecutions also survive, although they may be based on duties established by
    state occupational safety and health standards. (See Pedraza v. Shell Oil Co. (1st
    Cir. 1991) 
    942 F.2d 48
    , 53-54, and cases cited [tort claims not preempted: “[W]e
    find no warrant whatever for an interpretation which would preempt enforcement
    in the workplace of private rights and remedies traditionally afforded by state laws
    of general application”]; State v. Far West Water & Sewer (Ariz. 2010) 
    228 P.3d 909
    , 919, and cases cited [no preemption of prosecution under state criminal law
    punishing conduct that is also governed by federal occupational safety and health
    standards, the existence of some criminal penalties within the federal act itself
    notwithstanding]; People v. Pymm (N.Y. 1990) 
    563 N.E.2d 1
    , 4 [referring to
    “continued viability of State statutory and common-law duties”].) Indeed, section
    653(b)(4) has been interpreted as a uniquely broad savings clause (In re Welding
    Fume Products Liability Litigation (N.D.Ohio 2005) 
    364 F.Supp.2d 669
    , 687, &
    fn. 21), and broad savings clauses may be seen as an indication that the field
    preempted is narrow. (See Viva! Internat. Voice for Animals v. Adidas
    Promotional Retail Operations, Inc. (2007) 
    41 Cal.4th 929
    , 944.)
    Finally, the provisions we have discussed indicate that the federal OSH Act
    contemplates a cooperative system of workplace safety regulation, not an
    exclusively federal one. When federal schemes involve cooperation and
    concurrent jurisdiction, this circumstance also suggests that the scope of
    preemption was not intended to be broad. (Olszewski, supra, 30 Cal.4th at p. 816
    24
    [“ ‘Where . . . coordinate state and federal efforts exist within a complementary
    administrative framework, and in the pursuit of common purposes, the case for
    federal pre-emption becomes a less persuasive one’ ”].)
    b. The UCL and FAL claims do not fall within this narrow field of
    preemption
    Laws of general application are not ordinarily preempted by the federal act.
    (Gade, supra, 505 U.S. at p. 107 (plur. opn. of O’Connor, J.); id. at p. 114 (conc.
    opn. of Kennedy, J.).) As explained below, under state law, actions under the
    UCL or FAL are not considered to be a means of enforcing the law claimed to
    have been violated; rather, they provide a remedy for economic damage suffered
    as a result of violations of a wide array of other laws. Furthermore, to the extent
    these claims may be a considered an enforcement mechanism with respect to the
    state plan’s substantive standards, these claims merely supplement enforcement of
    state standards. Federal OSHA’s provisions related to the enforcement of state
    plans are concerned with ensuring enforcement that is at least as effective as the
    federal standards; nothing in the federal act suggests a concern with enforcement
    that exceeds federal requirements.
    The UCL concerns unfair competition, a term that “mean[s] and include[s]
    any unlawful, unfair or fraudulent business act or practice and unfair, deceptive,
    untrue or misleading advertising and any act prohibited by [the false advertising
    law].” (Bus. & Prof. Code, § 17200.) The purpose of the UCL “is to protect both
    consumers and competitors by promoting fair competition in commercial markets
    for goods and services.” (Kasky v. Nike, Inc. (2002) 
    27 Cal.4th 939
    , 949.) As we
    have said, “the act provides an equitable means through which both public
    prosecutors and private individuals can bring suit to prevent unfair business
    practices and restore money or property to victims of these practices.” (Zhang v.
    Superior Court (2013) 
    57 Cal.4th 364
    , 371, italics added.) The FAL, for its part,
    25
    makes actionable “untrue or misleading” statements made to “induce the public to
    enter into any obligation” to purchase goods and services. (Bus. & Prof. Code,
    § 17500.) Actions to enforce the UCL or FAL, which may be brought by
    government officials and by individuals who have suffered injury in fact (Bus. &
    Prof. Code, § 17203), address the “ ‘ “overarching legislative concern . . . to
    provide a streamlined procedure for the prevention of ongoing or threatened acts
    of unfair competition.” [Citation.]’ ” (Zhang, supra, 57 Cal.4th at p. 371, italics
    added.) And the remedies are “cumulative . . . to the remedies or penalties
    available under all other laws of this state.” (Bus. & Prof. Code, § 17205.)
    As noted above, under state law, these actions are not considered on their
    face to be a means of enforcing the underlying law. “ ‘By proscribing “any
    unlawful” business practice, “[the UCL] ‘borrows’ violations of other laws and
    treats them as unlawful practices” that the [UCL] makes independently actionable.
    [Citations.]’ ” (Rose v. Bank of America, N.A. (2013) 
    57 Cal.4th 390
    , 396.) We
    have explained that “by borrowing requirements from other statutes, the UCL does
    not serve as a mere enforcement mechanism. It provides its own distinct and
    limited equitable remedies for unlawful business practices, using other laws only
    to define what is ‘unlawful.’ [Citation.] The UCL reflects the Legislature’s intent
    to discourage business practices that confer unfair advantages in the marketplace
    to the detriment of both consumers and law-abiding competitors.” (Id. at p. 397;
    see People ex rel. Harris v. Pac Anchor Transportation, Inc. (2014) 
    59 Cal.4th 772
    , 783 [Federal Aviation Administration Act does not on its face preempt UCL
    claims against motor carriers for misclassification of drivers]; In re Tobacco Cases
    II (2007) 
    41 Cal.4th 1257
    , 1272 [a federal law governing cigarette sales to minors
    on its face did not expressly preempt the UCL, which “is a law of general
    application, and it is not based on concerns about smoking and health”]; Korea
    Supply Co. v. Lockheed Martin Corp. (2003) 
    29 Cal.4th 1134
    , 1150; Cel-Tech
    26
    Communications, Inc. v. Los Angeles Cellular Telephone Co. (1999) 
    20 Cal.4th 163
    , 180; Stop Youth Addiction, Inc. v. Lucky Stores, Inc. (1998) 
    17 Cal.4th 553
    ,
    560, 566 576.) Thus, the UCL and FAL are laws of general application.
    We acknowledge that in some instances, a UCL claim may fall within a
    field of preemption. For example, in In re Tobacco Cases II, supra, 
    41 Cal.4th 1257
    , a UCL claim based on advertising activities alleged to violate Penal Code
    section 308 (prohibiting sale of tobacco products to minors and possession of such
    products by minors) was preempted as applied under the particular terms of a
    federal law governing cigarette labeling and advertising. (Id. at pp. 1272-1273.)
    Under the federal law involved, preemption turned on whether the particular UCL
    claim would impose a duty necessarily and inherently based on concerns about
    smoking and health. (Id. at p. 1273.) But here, the UCL and FAL claims are
    based on standards set forth in an approved state plan, and which therefore
    preempt any federal standards. Because these claims do not impose any duty on
    employers that is subject to federal preemption, they do not come within the
    principles articulated in Tobacco Cases II.
    We also recognize that the federal OSH Act is concerned not only with a
    state’s substantive standards, but also with its enforcement. (
    29 U.S.C. § 667
    (b) [a
    state that wants to assume responsibility for “development and enforcement” of
    standards must submit a state plan for “development of such standards and their
    enforcement”].) Therefore, when UCL and FAL claims are premised on
    violations of a state’s plan, the UCL and FAL arguably come within the high
    court’s description of an occupational safety and health standard in the context of
    the federal OSH Act: “a state law requirement that directly, substantially, and
    specifically regulates occupational safety and health.” (Gade, supra, 505 U.S. at
    pp. 107 (plur. opn. of O’Connor, J.); id. at p. 114 (conc. opn. of Kennedy, J.).)
    27
    Notably, however, the federal OSH Act’s concern regarding enforcement is
    only that states provide enforcement “at least as effective” as required under the
    federal OSH Act. (
    29 U.S.C. § 667
    (c)(2); see 
    29 C.F.R. § 1902.3
    (d) (2017).) Its
    focus on adequate enforcement, and its silence with respect to enforcement that is
    more than adequate or is pursued through mechanisms other than those set forth in
    a state’s plan, lead us to conclude that the federal OSH Act’s scheme is not “ ‘ “so
    pervasive as to make reasonable the inference that Congress left no room for the
    States to supplement it.” ’ ” (Gade, supra, 505 U.S. at p. 98 (plur. opn. of
    O’Connor, J.).) California has provided adequate enforcement provisions through
    its plan, and there is no “unavoidable implication” to be derived from the federal
    OSH Act that where a state has met this federal requirement, Congress intended to
    preclude supplemental enforcement of approved standards. (Id. at p. 99.)
    Our conclusion is consistent with the decision of the federal Department of
    Labor approving California’s Hazard Communication Standard (Standard), which
    incorporated provisions from Proposition 65, the Safe Drinking Water and Toxic
    Enforcement Act. (Health & Saf. Code, §§ 25249.5 et seq.; 62 F.R. § 31159-01.)
    In addition to adopting the substantive standards of Proposition 65, “the
    Cal/OSHA standard incorporate[d] the enforcement mechanism of Proposition 65,
    which provides for supplemental judicial enforcement by allowing the State
    Attorney General, district attorneys, city attorneys, city prosecutors, or ‘any person
    in the public interest’ to file civil lawsuits against alleged violators.” (62
    Fed.Reg., supra, at p. 31161.) Some comments regarding the proposed Standard
    contended that Proposition 65’s private right of action violated the federal
    requirement that an agency be designated to enforce the state plan. The Board’s
    decision noted that “[i]f a State standard is not identical to Federal standards, the
    State standard (and its enforcement) must be at least as effective as the comparable
    Federal standard.” (62 Fed.Reg, supra,. at p. 31160.) It also observed, “Although
    28
    [the federal OSH Act] does not authorize private enforcement, OSHA State plans
    do not operate under a delegation of Federal authority but under a system which
    allows them to enact and enforce their own laws and standards under State
    authority. Therefore, nothing in the Act prevents States with approved plans from
    legislating such a supplemental private right of action in their own programs. . . .
    [¶] In the case of Proposition 65, private enforcement is supplemental to, not a
    substitute for, enforcement by Cal/OSHA. Private enforcement, therefore, should
    not detract from Cal/OSHA’s responsibilities to enforce State standards.” (Id.,
    p. 31167.)
    The federal Department’s consideration of Proposition 65 occurred in the
    context of an approval of a plan amendment, but Congress has not specified (as it
    has elsewhere) that any amendments to the state plan — even as to substantive
    standards — must be submitted to the Secretary of Labor for approval before they
    are implemented. (See, e.g., 
    7 U.S.C. § 6507
    (c)(2) [in context of changes to
    federally-approved supplemental state requirements for organic food certification,
    governing state official, “prior to implementing any substantive change to
    programs approved under this subsection, shall submit such change to the
    Secretary for approval”].) In addition, as explained above, the federal OSH Act’s
    provisions related to the authority of the Secretary of Labor to approve
    modifications to a state plan and to evaluate a state’s execution of its plan
    (
    29 U.S.C. § 667
    (c), (f)) raise the potential that a modification may be rejected or
    that approval of a plan may be withdrawn, but these provisions leave the state plan
    intact and do not preempt state law before a modification is rejected or approval is
    withdrawn. There is no indication in these provisions that any state deviation from
    the formally approved plan is, by some self-executing feature, without effect until
    it is brought to the Secretary’s notice and formally approved as an amendment.
    29
    Federal regulations and commentary are in accord that changes to state
    plans may be implemented immediately, prior to any action by the Secretary of
    Labor or that officer’s designee, federal OSHA: “Federal OSHA approval of a
    State plan . . . in effect removes the barrier of Federal preemption, and permits the
    State to adopt and enforce State standards and other requirements regarding
    occupational safety or health issues regulated by OSHA. A State with an
    approved plan may modify or supplement the requirements contained in its plan,
    and may implement such requirements under State law, without prior approval of
    the plan change by Federal OSHA. Changes to approved State plans are subject to
    subsequent OSHA review. If OSHA finds reason to reject a State plan change,
    and this determination is upheld after an adjudicatory proceeding, the plan change
    would then be excluded from the State’s Federally-approved plan.” (
    29 C.F.R. § 1953.3
    (a) (2017).) Federal OSHA explained that this regulation reflects the
    agency’s “longstanding interpretation of the Act to the effect that States which
    have submitted and obtained Federal approval of a State plan under [the federal
    OSH Act] may adopt modifications to their State plan (such as new standards,
    regulations, amendments to State OSHA legislation, or revised enforcement
    procedures) and may implement these modifications upon adoption, without prior
    approval of each particular modification. . . . OSHA has always viewed its
    enabling statute as not requiring pre-enforcement/pre-implementation Federal
    approval . . . .” (67 Fed.Reg., supra, at p. 60123, italics added; see also 62
    Fed.Reg., supra, at p. 31165 [“A modification to an approved State plan takes
    effect prior to and pending OSHA review of the modification” and the burden of
    proof rests on the party opposing the modification]; see Florida Citrus Packers v.
    California (N.D.Cal. 1982) 
    545 F.Supp. 216
    , 219 [upholding federal OSHA’s pre-
    approval enforcement policy]; see also Shell Oil Co. v. U.S. Dept. of Labor
    30
    (D.D.C. 2000) 
    106 F.Supp.2d 15
    , 18 [noting in passing that federal OSHA
    routinely applies this pre-approval enforcement policy].)6
    Finally, we reiterate the strong presumption against preemption, arising
    both from the fact that the federal legislation addresses an area that has been the
    long-standing subject of state regulation and from the fact that California has
    assumed responsibility under the federal OSH Act to regulate worker safety and
    health, thereby preempting federal law. In light of the cooperative character of the
    federal OSH Act, the authority the federal OSH Act grants states that have
    6       We are aware of Industrial Truck Ass’n v. Henry (9th Cir. 1997) 
    125 F.3d 1305
    , in which the court read the Gade plurality’s implied preemption analysis
    relatively broadly, and concluded that the state regulations promulgated to
    implement California’s Safe Drinking Water and Toxic Enforcement Act were
    preempted by the federal OSH Act in the workplace context until the regulations
    were included in the existing state OSHA standards and approved by the Secretary
    of Labor. In the Industrial Truck Ass’n case, unlike here, it was undisputed that
    the challenged regulations themselves constituted occupational safety and health
    standards, and that there were inconsistent federal standards on the same issue;
    that case did not present a situation implicating mere additional enforcement
    measures for existing, approved standards. Moreover, as the Ninth Circuit
    recognized, “[a]n agency’s interpretation of the preemptive effect of its regulations
    is entitled to deference where Congress has delegated authority to the agency, the
    agency’s interpretation is not contrary to a statute, and agency expertise is
    important to determining preemption.” (Id. at p. 1311.) In light of this principle,
    the Ninth Circuit should have given deference to the federal Department of
    Labor’s decision approving California’s incorporation of provisions from
    Proposition 65 into a standard under the state plan. (62 Fed.Reg, supra.) As noted
    above, that decision reflects the federal agency’s view that a state may modify its
    enforcement mechanisms without prior federal approval. (62 Fed.Reg., supra, at
    p. 31165.) Proper consideration of the federal Department’s decision would have
    led to a narrower reading of the federal OSH Act’s preemptive effect. (See also
    National Cable & Telecommunications Ass’n v. Brand X Internet Services (2005)
    
    545 U.S. 967
    , 982 [a subsequent agency construction is entitled to deference under
    Chevron U.S.A. Inc. v. Natural Resources Defense Council, Inc. (1984) 
    467 U.S. 837
     unless the court’s prior construction was based on a conclusion that the terms
    of the statute were unambiguous, leaving no room for the agency’s construction].)
    31
    assumed responsibility for worker safety and health, the nature of UCL and FAL
    claims, and the strong presumption against preemption, we find no implied
    preemption of the claims in this case.
    2. Obstacle preemption
    To recall, “Obstacle preemption permits courts to strike state law that
    stands as ‘an obstacle to the accomplishment and execution of the full purposes
    and objectives of Congress.’ [Citations.] It requires proof Congress had particular
    purposes and objectives in mind, a demonstration that leaving state law in place
    would compromise those objectives, and reason to discount the possibility the
    Congress that enacted the legislation was aware of the background tapestry of state
    law and content to let that law remain as it was.” (Quesada, supra, 62 Cal.4th at
    p. 312.) We “conduct our analysis from the starting point of a presumption that
    displacement of state regulation in areas of traditional state concern was not
    intended absent clear and manifest evidence of a contrary congressional intent.”
    (Id. at p. 315; see also Iskanian v. CLS Transportation Los Angeles, LLC (2014)
    
    59 Cal.4th 348
    , 388 [a high threshold must be surmounted before obstacle
    preemption will be found].)
    The principal goal of the federal OSH Act’s enactment was to “address the
    problem of uneven and inadequate state protection of employee health and safety”
    by supplying a minimum level of protection throughout the country — a federal
    “nationwide ‘floor’ of minimally necessary safeguards.” (United Air Lines, supra,
    32 Cal.3d at p. 772.) Federal approval of the California plan indicates that this
    goal has been met in this state. Even if we view UCL and FAL actions based on
    Cal/OSHA violations as having a substantial impact on occupational safety and
    health issues, that impact is not an obstacle to achieving the congressional
    32
    purpose, nor are additional enforcement mechanisms an obstacle to establishing at
    least a minimum level of worker protection.7
    Similarly, UCL and FAL claims that are premised on Cal/OSHA violations
    do not conflict with the federal OSH Act’s provision that when state standards are
    applicable to products in interstate commerce, the Secretary of Labor must
    determine that the standards “are required by compelling local conditions and do
    not unduly burden interstate commerce.” (
    29 U.S.C. § 667
    (c)(2).) Such claims
    involve the same substantive standards that have been approved by the Secretary,
    and therefore do not impose any greater substantive burdens on interstate
    commerce. Even if the availability of greater penalties should be incorporated into
    the state plan and submitted to the Secretary of Labor for review of any impact on
    interstate commerce, it does not follow that any change that has not yet been
    incorporated and approved is preempted in the meantime.
    Neither do the UCL or FAL claims obstruct another of the federal OSH
    Act’s purposes, namely to encourage the States “to assume the fullest
    responsibility for the administration and enforcement of their occupational safety
    and health laws.” (
    29 U.S.C. § 651
    (b)(11); see also 
    29 C.F.R. § 1902.1
    (a) (2017),
    see 
    id.
     § 1902.1(c)(1) (2017) [after an approved plan gains successful review the
    year following its initial approval, the federal “enforcement authority shall not
    apply with respect to any occupational safety or health issue covered by the
    7      The congressional purpose recognized by the plurality opinion in Gade,
    supra, 
    505 U.S. 88
    , that there be but a single standard of conduct to which
    employers must adhere (id. at p. 99) was at issue in Gade because there was no
    approved state plan that displaced the federal law. In contrast, the sole applicable
    relevant standards in this state are the California standards. The Secretary of
    Labor retains the authority to audit the state’s enforcement of its standards and to
    withdraw federal approval, but until that happens, only the California standards
    govern employer conduct.
    33
    plan”].) “OSHA has interpreted the OSH Act to recognize that States with
    approved State plans retain broad power to fashion State standards” and to
    experiment. (62 Fed.Reg., supra, p. 31160, italics added.) The federal OSH Act
    “reflects [a] ‘search for enlightened public policy’. . . by removing the bar of
    preemption through plan approval and, thus, allowing States to administer their
    own workers’ protection laws so long as they meet the floor established by the
    Federal OSHA program.” (Ibid.) We can identify no evidence that Congress had
    a “particular purpose[] and objective[]” to restrict state authority to the exact terms
    of the state’s approved state plan. (See Quesada, supra, 62 Cal.4th at p. 312.)
    Finally, there is no reason to “discount” Congress’s awareness and
    acceptance of the “background tapestry” of state law in this area. (Quesada,
    supra, 62 Cal.4th at p. 312) In the federal OSH Act’s savings clause, Congress
    explicitly recognized the continuing applicability of state law in the field. (See 
    29 U.S.C. § 653
    (b)(4).) Under that clause, tort litigation could produce large civil
    awards and penalties despite the existence of a more modest state administrative
    enforcement plan, but such litigation is not preempted. Therefore, the magnitude
    of the potential UCL and FAL penalties compared with the lesser administrative
    penalties imposed under the state plan are not inconsistent with the federal
    scheme.
    Under the circumstances, there is no “clear and manifest evidence”
    (Quesada, supra, 62 Cal.4th at p. 315) of a congressional intent to displace state
    authority over unfair competition and consumer claims that are premised on
    Cal/OSHA standards.
    B. No express preemption of UCL and FAL claims
    As noted above, the federal OSH Act does not state that claims such as
    UCL and FAL claims or that enforcement actions beyond those specified in a state
    34
    plan are preempted until they are included in a plan and approved by the Secretary
    of Labor. However, despite the absence of such a statement, express preemption
    may be found where an act’s structure and language reflect a clear purpose of
    Congress to preempt state law. (See Gade, 
    supra,
     505 U.S. at pp. 112-113 (conc.
    opn. of Kennedy, J.) [express preemption of state law established by federal OSH
    Act provisions that allow state regulation where there is no relevant federal
    standard, require a state to submit a plan in order to assume responsibility for
    worker safety and health, set forth conditions for approval of a plan, and require
    continuing evaluation of a plan by the Secretary of Labor].)
    As our discussion above of implied preemption reflects, when a state has
    obtained approval of a state plan for the regulation of worker safety and health,
    state law preempts federal law. Moreover, with respect to the enforcement of
    safety and health standards, the federal OSH Act requires enforcement at least as
    effective as under the federal act; there is no indication in the language or structure
    of the federal OSH Act that states with approved plans cannot supplement
    enforcement of federally-approved standards by means of unfair business practice
    claims. (See Farm Raised Salmon Cases, supra, 42 Cal.4th at p. 1090 [permitting
    UCL claim to proceed and finding it significant that nothing in the federal Food,
    Drug and Cosmetic Act said anything restricting the range of remedies states could
    provide].) Finally, the federal OSH Act allows a state with an approved plan to
    implement modifications or additions without prior approval of the plan change by
    Federal OSHA.
    In the absence of a clear and manifest congressional purpose to preempt
    claims such as the UCL and FAL claims asserted in this action, such claims are
    encompassed in the presumption against preemption that arises upon a state’s
    assumption of responsibility under the federal OSH Act to regulate worker safety
    and health. (See Quesada, supra, 62 Cal.4th at p. 315.)
    35
    III. Disposition
    The judgment of the Court of Appeal is reversed, and the matter is
    remanded to the Court of Appeal with directions to vacate its order granting the
    petition for writ of mandate and instead to deny the petition for writ of mandate,
    and to remand the matter to the trial court for further proceedings not inconsistent
    with this opinion.
    CANTIL-SAKAUYE, C. J.
    WE CONCUR:
    CHIN, J.
    CORRIGAN, J.
    LIU, J.
    CUÉLLAR, J.
    KRUGER, J.
    MIHARA, J.*
    *      Associate Justice of the Court of Appeal, Sixth Appellate District, assigned
    by the Chief Justice pursuant to article VI, section 6 of the California Constitution.
    36
    See next page for addresses and telephone numbers for counsel who argued in Supreme Court.
    Name of Opinion Solus Industrial Innovations, LLC v. Superior Court
    __________________________________________________________________________________
    Unpublished Opinion
    Original Appeal
    Original Proceeding
    Review Granted XXX 
    229 Cal.App.4th 1291
    Rehearing Granted
    __________________________________________________________________________________
    Opinion No. S222314
    Date Filed: February 8, 2018
    __________________________________________________________________________________
    Court: Superior
    County: Orange
    Judge: Kim Garlin Dunning
    __________________________________________________________________________________
    Counsel:
    Fox Rothschild, David F. Faustman; Jones Day, Brian A. Sun and Frederick D. Friedman for Petitioners.
    Luke A. Wake; Alston & Bird and Damien M. Schiff for National Federation of Independent Business
    Small Business Legal Center as Amicus Curiae on behalf of Petitioners.
    Shook, Hardy & Bacon, Phil Goldberg, Cary Silverman, Patrick Gregory; Manufacturers’ Center for Legal
    Action, Linda E. Kelly and Patrick N. Forrest for National Association of Manufacturers as Amicus Curiae
    on behalf of Petitioners.
    Lawrence H. Kay for Construction Employers Association as Amicus Curiae on behalf of Petitioners.
    No appearance for Respondent.
    Tony Rackauckas, District Attorney, and Kelly A. Ernby, Deputy District Attorney, for Real Party in
    Interest.
    Mark Zahner for California District Attorneys Association as Amicus Curiae on behalf of Real Party in
    Interest.
    Christopher Jagard, Mi Kim, Amy D. Martin, Suzanne P. Marria and Kathryn J. Woods for State of
    California Department of Industrial Relations, Division of Occupational Safety and Health as Amicus
    Curiae on behalf of Real Party in Interest.
    Counsel who argued in Supreme Court (not intended for publication with opinion):
    David F. Faustman
    Fox Rothschild
    345 California Street, Suite 2200
    San Francisco, CA 94104
    (415) 364-5540
    Kelly A. Ernby
    Deputy District Attorney
    Post Office Box 808
    Santa Ana, CA 92702
    (714) 834-3600
    Mi Kim
    Department of Industrial Relations
    1515 Clay Street, Suite 701
    Oakland, CA 94612
    (510) 286-3800