______________________________________ 

______________________________________________________________________________ 

OFFICE OF THE ATTORNEY GENERAL
 State of California
 

JOHN K. VAN DE KAMP
 Attorney General
 

OPINION : 

: No. 89-502 

of : 

: JANUARY 18, 1990 

JOHN K. VAN DE KAMP : 

Attorney General : 

: 

JACK R. WINKLER : 

Assistant Attorney General : 

: 

THE HONORABLE ROBERT J. CAMPBELL, MEMBER OF THE CALIFORNIA 

ASSEMBLY, has requested an opinion on the following questions: 

1. Does a California city have authority to enact an ordinance prohibiting the

payment of less than the prevailing wages as determined by the state for public works projects on

private construction projects in the city? 

2. Does a California city have authority to enact an ordinance prohibiting the

employment of those who have not completed or are not engaged in an apprentice program on

private construction projects in the city? 

CONCLUSIONS 

1. A California city has authority to enact an ordinance prohibiting the payment of

less than the prevailing wages fixed by the Director of the Department of Industrial Relations for

public works contracts on private construction projects in the city. 

2. A California city has authority to establish minimum levels of knowledge and skill

required to permit employment on private construction projects in the city, including completion of

or engagement in an apprenticeship program assuming provision is made for demonstration of the

existence of the required knowledge and skills by other means as well. 

ANALYSIS 

We are asked whether a California city may, by ordinance, prohibit the payment of

less than prevailing wages on private construction projects in the city. The ordinance would not 

apply to public works projects but it would adopt by reference the prevailing wage determinations

made by the Department of Industrial Relations for public works projects which the ordinance would

apply to private construction projects. 

1. 89-502
 
We are also asked whether a California city may, by ordinance, prohibit the

employment of those who have not completed or are not engaged in an apprenticeship program on

private construction projects in the city. We assume the programs referred to are those contemplated

and regulated by the Apprentice Labor Standards Act of 1939 (Lab. Code, § 3070 et seq.). 

Since both questions concern the authority of a California city to regulate

employment in private construction projects in the city by ordinance we will examine the sources

of such legislative power and the legal constraints upon its exercise. 

The Police Power 

Article XI, section 7 of the California Constitution provides: 

"A county or city may make and enforce within its limits all local, police,

sanitary, and other ordinances and regulations not in conflict with general laws." 

This section was adopted in 1970 replacing article XI, section 11 with nearly identical language

which was adopted in 1879. The legislative authority granted by this section is often referred to as

the "police power" which cities and counties share with the Legislature. In Birkenfeld v. City of

Berkeley (1976) 17 Cal.3d 129, 140 the supreme court observed: 

"The Constitution itself confers upon all cities and counties the power to

`make and enforce within [their] limits all local, police, sanitary, and other

ordinances and regulations not in conflict with general laws.' (Cal. Const., art. XI,

section 7.) A city's police power under this provision can be applied only within its

own territory; and is subject to displacement by general state law but otherwise is as

broad as the police power exercisable by the Legislature itself." (Citations omitted.) 

In Candid Enterprises, Inc. v. Grossmont Union High School Dist. (1985) 39 Cal.3d 878, 885 the

supreme court reiterated the same view in these words: 

"Under the police power granted by the Constitution, counties and cities have

plenary authority to govern, subject only to the limitation that they exercise this

power within their territorial limits and subordinate to state law. (Cal. Const., art.

XI, section 7.) Apart from this limitation, the `police power' [of a county or city]

under this provision . . . is as broad as the police power exercisable by the

Legislature itself." (Citing the Birkenfeld case.) 

The "police power" is the power inherent in a government to enact laws, within

constitutional limits, to protect the order, safety, health, morals and general welfare of society. (In 

re Rameriz (1924) 193 Cal. 633, 649-650.) In its inception the "police power" was closely

concerned with the preservation of the public peace, safety, morals and health, without specific

regard to the general welfare. Under modern conditions it includes the general welfare which

embraces regulations to promote the economic welfare, public convenience, and general prosperity

of the community. (Chow v. Santa Barbara (1933) 217 Cal. 673, 702.) In the Birkenfeld case, 

supra at p. 158, the supreme court stated: 

"It is now settled California law that legislation regulating prices or otherwise

restricting contractual or property rights is within the police power if its operative

provisions are reasonably related to the accomplishment of a legitimate

governmental purpose [citations] and that the existence of an emergency is not a

prerequisite to such legislation. [Citations.]" 

2. 89-502
 
Of course the exercise of the police power by the Legislature or by cities and counties

is subject the limitations imposed by the state and federal constitutions. A century ago the courts

viewed legislation which directly affected a contract for labor as an infringement of the liberty to

contract which violated the due process clause of the Fourteenth Amendment. In Ex parte Kuback

(1890) 85 Cal. 274 the California Supreme Court held that a Los Angeles city ordinance prohibiting

the employment of workers more than eight hours a day on all contracts with the city was

unconstitutional because it was "a direct infringement of the rights of such persons to make and

enforce their contracts." The court added that if the services to be performed were unlawful or

against public policy, or were such as might be unfit for certain persons, as, for example, females

or infants, the ordinance might be upheld as a sanitary or police regulation. 

We will not attempt to catalog the many state and federal cases which have upheld

more and more legislative regulation of economic and industrial matters including the employment 

contract. Instead we quote a summary provided by Justice Friedman in Doyle v. Board of Barber 

Examiners (1963) 219 Cal.App.2d 504, 509-514: 

"The right to engage in a legitimate employment or business receives

recognition as a portion of the individual freedoms secured by the due process

provision of the federal and state Constitutions. [citations] This freedom is subject

to the state's police power, which is simply the power to subject individuals to

reasonable regulation for the purpose of achieving governmental objectives such as

the public safety, health, morals and public welfare. [citations] `Reasonable

regulation' implies that the regulatory objective is the welfare of the general public

as contrasted with that of a special class or segment. [citation] The law must not be 

arbitrary; it must rest upon `adequate reason.' [citation] If the general objective of

the law is within the state's regulatory power, its individual provisions must have a

`real and substantial relation' to that objective. [citation] In the field of occupational

licensing the requirement must have a `rational connection' with fitness to practice

the particular vocation or profession; otherwise it is discriminatory and arbitrary. . 

. . 

"These standards, caught up in the flux of social development and shifting

judicial attitudes, have undergone considerable change. The tide of judicial

supervision over regulatory legislation ran high during the first three decades of the 

century. Courts indulged in independent investigations of reasonableness and

nullified statutes regarded as arbitrary. Judicial veto of economic legislation deemed

to be unreasonable or arbitrary occurred in many notable decisions such as Lochner 

v. New York (1905) 198 U.S. 45 (nullifying legislation limiting working hours in 

bakeries), Adkins v. Children's Hospital, [1922] 261 U.S. 525 (invalidating a 

minimum wage law) and Ribnik v. McBride [1928] 277 U.S. 350 (invalidating 

regulation of employment agency rates). During the thirties a turn of the tide was

marked by such decisions as Nebbia v. New York, supra, [(1934) 291 U.S. 502]

(upholding New York's milk pricing law, and Olsen v. Nebraska [1941] 313 U.S.

236 (sustaining regulation of employment agency rates). The tide has continued in 

ebb stage. [ftn] A representative expression of current doctrine is Williamson v. Lee 

Optical of Okla., supra [1955] 348 U.S. 483, at pp. 487-488: `The Oklahoma law

may exact a needless, wasteful requirement in many cases. But it is for the 

legislature, not the courts, to balance the advantages and disadvantages of the new

requirement. . . . But the law need not be in every respect logically consistent with

its aims to be constitutional. It is enough that there is an evil at hand for correction,

and that it might be thought that the particular legislative measure was a rational way

to correct it. 

3. 89-502
 
"`The day is gone when this Court uses the Due Process Clause of the

Fourteenth Amendment to strike down state laws, regulatory of business and

industrial conditions, because they may be unwise, improvident, or out of harmony

with a particular school of thought.'" . . . 

"The federal Supreme Court's abstention finds its California parallel.

Although the state Supreme Court has continued to speak in terms of statutory

reasonableness and the necessity for a real relationship between economic legislation

and public weal, it has accompanied these expressions with others demonstrating a

high degree of judicial self-restraint. A definitive description of judicial function in 

relation to the police power occurs in Consolidated Rock Products Co. v. City of Los

Angeles, [1962] 57 Cal.2d 515, 522: `. . . the determination of the necessity and form

of such regulations, as is true with all exercises of the police power, is primarily a

legislative and not a judicial function, and is to be tested in the courts not by what the

judges individually or collectively may think of the wisdom or necessity of a

particular regulation, but solely by the answer to the question is there any reasonable

basis in fact to support the legislative determination of the regulation's wisdom and

necessity?' Thus in Miller [v. Board of Public Works, 195 Cal. 477 (1925)], supra, this court said in 195 Cal. at page 490: `The courts may differ with the legislature as

to the wisdom and propriety of a particular enactment as a means of accomplishing

a particular end, but as long as there are considerations of public health, safety,

morals, or general welfare which the legislative body may have had in mind, which

have justified the regulation, it must be assumed by the court that the legislative body

had those considerations in mind and that those considerations did justify the

regulation . . . [W]hen the necessity or propriety of an enactment [is] a question upon

which reasonable minds might differ, the propriety and necessity of such enactment

[is] a matter of legislative determination.' [Citations.] 

"Doctrinal statements as to extent of the police power are only superficially

distinct from descriptions of the judicial role. Both really describe the same subject.

The boundary of legislative power is situated wherever the judiciary locates a

constitutional fence. When the fence is retracted, the power advances. Thus the rule 

of judicial self-restraint becomes nothing less than a substantive constitutional

doctrine. As we understand current doctrine, judicial examination of a statute under

economic due process attack is completed when any fact or facts appear which the

Legislature might rationally have accepted as the basis for a finding of public

interest. [Citations.] On this point federal and California doctrines appear to 

parallel." 

Governmental authority to regulate features of employment contracts has a long

history in the courts. We shall examine that history to determine first, whether the ordinance in each

question comes within a California city's police power, and second whether the authority to enact

the ordinance has been preempted by state law or by federal law. 

The Prevailing Wage Ordinance 

The ordinance contemplated in the first question would prohibit the payment of less

than the prevailing wages determined by the California Department of Industrial Relations on private

construction projects within the city. The prevailing wages referred to are those determined

pursuant to chapter 1, part 7, division 2 (commencing with § 1720) of the Labor Code (referred to 

4. 89-502
 
 

 

 

 

herein as the "Public Works Prevailing Wage Law") governing public works projects. Section 17701 

requires the Director of the Department of Industrial Relations to determine the general prevailing

rate of per diem wages in accordance with standards set forth in section 1773. These determinations 

are made for numerous classifications of workmen for separate areas of the state embracing one or

more counties and often incorporate collective bargaining agreements. See 8 Cal. Code of 

Regulations, section 16200 et seq. Section 1771 provides that no less than the general prevailing

rate of per diem wages shall be paid for work of a similar character in the locality in which the

public work is performed. The Public Works Prevailing Wage Law applies only to public work

performed for public agencies under contract and thus has no application to private construction

projects. The city ordinance would adopt the same prevailing wages as are fixed pursuant to the

state law for public projects and prohibit the payment of wages lower than those prevailing wages

to workers on private construction projects within the city. 

The Public Works Prevailing Wage Law was held constitutional in Metropolitan

Water District v. Whitsett (1932) 215 Cal. 400. At page 417 in that case the court stated: 

"It is essentially a Minimum Wage Law.[2] When the schedule of wages is

determined, not less than the amounts specified therein may be paid to employees on

the work. The act provides that nothing therein shall be construed to prohibit the

payment to any employee on the public work more than the prevailing rate." 

Minimum wage legislation would appear to be an exercise of the police power as that

term has been described in the foregoing analysis.3

 In Shalz v. Union School Dist. (1943) 58

Cal.App.2d 599, 606 in considering the penalty section of the Public Works Prevailing Wage Law

stated: "There is no inhibition upon the state to impose such penalties for disregard of its police 

power as will insure prompt obedience to the requirements of such regulations." (Emphasis added.)

Minimum wages are regulated largely although not exclusively by state and federal legislation.4 

However, a city's power to legislate under article XI, section 7 of the California Constitution is not

diminished by its infrequent use. We conclude that an ordinance prohibiting the payment of wages

less than the prevailing wages fixed by the state for public works projects on private construction

projects in the city would fall within the city's legislative "police powers" granted to California cities 

1

Section references are to the Labor Code unless otherwise indicated. 

2

Cf. San Francisco Labor Council v. Regents of University of California (1980) 26 Cal.3d 785,

790 wherein the court observed: "Prevailing wage regulations are substantially different from 

minimum wage statutes." In so describing prevailing wage regulations the court in the two cases

is looking at different aspects of a prevailing wage law. It prohibits payment of less than a particular

wage and therefore is properly described as a minimum wage law. But as pointed out in the text 

(infra, at p. 9) the criteria for establishing the prevailing wage differs markedly from that used to

established a minimum wage. 

3

It might be argued that because the Public Works Prevailing Wage Law applies only to public

work the legislative power being exercised might be described as the states power to control its own

instrumentalities as distinguished from the police power to regulate private contractual and property

rights. (See Metropolitan Water District v. Whitset, supra, at pp. 417-418.) Should such a 

distinction exist it would not apply to the ordinance in question since the ordinance would not apply

to public works but only to private contracts. As a measure directly regulating private wage

contracts the kind of legislative power exercised by the ordinance would be the police power. 

4

See McQuillin, Municipal Corporations (Third Edition), section 24.434. 

5. 89-502
 
and counties by article XI, section 7 of the California Constitution unless it is "in conflict with

general laws" as provided in the same section. 

Preemption 

If otherwise valid local legislation conflicts with state law, it is preempted by such

law and is void. A conflict exists if the local legislation duplicates, contradicts, or enters an area

fully occupied by general law, either expressly or by legislative implication. (People ex rel. 

Deukmejian v. County of Mendocino (1984) 36 Cal.3d 476, 484; Candid Enterprises, Inc. v. 

Grossmont Union High School Dist., supra, 39 Cal.3d 878. 885.) 

We consider first two state laws concerning minimum wages with which the

ordinance in question might conflict. The first is the Public Works Prevailing Wage Law which has 

been referred to above. The second is chapter 1, part 4, division 2 of the Labor Code (commencing

with § 1171 and referred to herein as the "State Minimum Wage Law") which directs the Industrial

Welfare Commission (created by § 70) to ascertain the wages, hours and conditions of labor in the

various occupations, trades and industries in which employees are employed in the state (§ 1173)

and after finding that wages paid to employees in any occupation, trade, or industry may be

inadequate to supply the cost of proper living the commission must appoint a wage board to

investigate the same (§ 1178) and after considering the wage board's recommendations and public

hearings the commission may adopt or amend regulations establishing minimum wages to be paid

to employees (§ 1182). 

We must determine whether a city ordinance prohibiting the payment of less than

prevailing wages fixed by the state for public works on private construction projects in the city

would conflict with either the Public Works Prevailing Wage Law or the State Minimum Wage Law

because it duplicates, contradicts, or enters an area fully occupied by state law. We shall consider 

each of these forms of conflict in turn. 

In Pipoly v. Benson (1942) 20 Cal.2d 366, 370-371, the court observed that "it has

been held from an early date that an ordinance which is substantially identical with a state statute

is invalid because it is an attempt to duplicate the prohibition of the statute." This was stated as an 

exception the general rule permitting local regulations supplementary to state statutes. The Pipoly

opinion explained that: 

"The invalidity arises, not from a conflict of language, but from the inevitable

conflict of jurisdiction which would result from dual regulations covering the same

ground. Only by such a broad definition of `conflict' is it possible to confine local

legislation to its proper field of supplementary regulation." 

The general rule was further explained in the Pipoly opinion as follows: 

"Where the legislature has assumed to regulate a given course of conduct by

prohibitory enactments, a municipality with subordinate power to act in the matter

may make such new and additional regulations in aid and furtherance of the purpose

of the general law as may seem fit and appropriate to the necessities of the particular

locality and which are not in themselves unreasonable. [Citation.] The cases in this 

state have consistently upheld local regulations in the form of additional reasonable

requirements not in conflict with the provisions of the general law. [Citations.]" 

6. 89-502
 
Pipoly v. Benson, supra, is referred to as California's leading case on this subject in Chavez v. 

Sargent (1959) 52 Cal.2d 162, 176, which in turn is cited with approval in People ex rel. 

Deukmejian v. County of Mendocino, supra, at page 484. 

Applying the Pipoly rules it is clear that the ordinance in question does not duplicate

the Public Works Prevailing Wage Law because it would apply the prevailing wage determinations

to a different set of workers, namely workers on private construction projects rather than on public

works. Their application to the State Minimum Wage Law is not so clear. Both the ordinance and 

the State Minimum Wage Law would prohibit wages paid to workers on private construction

projects below a state determined minimum. But the state agencies and the criteria used to establish

the minimum wage would be quite different. The ordinance would utilize regulations adopted by

the Director of the Department of Industrial Welfare who is required by section 1773 to ascertain

and consider the applicable wage rates established by collective bargaining agreements and such

rates as may have been predetermined for federal public works within the locality in determining

the wage rate for each craft, classification or type of work which "prevails" in the locality. On the 

other hand the State Minimum Wage Law is determined by the Industrial Welfare Commission on

the basis of its adequacy to supply the cost of a proper living to the workers. (See § 1178.) Because 

of these basic differences we cannot say that the ordinance would be "substantially identical" to the

State Minimum Wage Law and thus be in conflict with it as duplicate legislation under the rule of

the Pipoly case. We conclude that the ordinance would not duplicate either state law. 

As noted above the courts hold that a local ordinance conflicts with general law if

it "contradicts" a state law. In 62 Ops.Cal.Atty.Gen. 90, 95 we concluded that an ordinance

contradicts a state law if it attempts to permit what the state law prohibits or to prohibit what state

law permits. We think that conclusion is supported by Ex parte Daniels (1920) 183 Cal. 636, 642-

645 cited in People ex rel. Deukmejian v. County of Mendocino, supra, at page 484, as authority for

the rule that local legislation conflicts with state law if it "contradicts" state law. Applying the rule

to the ordinance the question is whether the State Minimum Wage Law authorizes that which the

ordinance prohibits. The ordinance prohibits payment of less than the prevailing wage on private

construction contracts in the city. The State Minimum Wage Law prohibits the payment of less than

the minimum wage fixed by the regulations of the Industrial Welfare Commission. We find nothing

in the State Minimum Wage Law which purports to authorize the payment of any wage. It simply 

prohibits the payment of less than the minimum wage fixed by the regulations. The ordinance does 

not prohibit what the state law authorizes and thus does not contradict the State Minimum Wage

Law. We conclude that the ordinance would not contradict either state law. 

Local legislation conflicts with general law if it enters an area fully occupied by

general law, either expressly or by legislative implication. (People ex rel. Deukmejian v. County

of Mendocino, supra.) We have found nothing in either the Public Works Prevailing Wage Law or

the State Minimum Wage Law which expresses any legislative intent that either or both of those

statutes were meant to provide the only legislation regulating minimum wages in the state. (Cf. Veh.

Code, § 21 which prohibits any local authority from enacting any ordinance on matters covered by

the Vehicle Code unless expressly authorized therein.) Nevertheless, state law may preempt the 

field by legislative implication. 

"The test for determining whether the area is fully occupied on the basis of

legislative implication was established in In re Hubbard, [1964] 62 Cal.2d 119, 128.

In determining whether the Legislature has preempted by implication to the

exclusion of local regulation we must look to the whole purpose and scope of the

legislative scheme. There are three tests: `(1) the subject matter has been so fully

and completely covered by general law as to clearly indicate that it has become

exclusively a matter of state concern; (2) the subject matter has been partially 

7. 89-502
 
covered by general law couched in such terms as to indicate clearly that a paramount

state concern will not tolerate further or additional local action; or (3) the subject

matter has been partially covered by general law, and the subject is of such a nature

that the adverse effect of a local ordinance on the transient citizens of the state 

outweighs the possible benefit to the municipality.'" (People ex rel. Deukmejian v. 

County of Mendocino, supra, at p. 485.) 

Looking to the purpose and scope of the Public Works Prevailing Wage Law we find

the Legislature expressly limited its application to public works and thus the Legislature indicated

no state concern in that law about the wages paid on private construction projects. We do not see 

how an ordinance prohibiting the payment of less than the prevailing wage on private construction

projects in a city would adversely affect the transient citizens of the state who might visit the city.

We conclude that the Public Works Prevailing Wage Law does not preempt by legislative

implication the regulation of minimum wages on private construction projects in the city. 

The purpose and scope of the State Minimum Wage Law is much broader than the

Public Works Prevailing Wage Law. Its stated purpose is to establish "a minimum wage adequate

to supply the necessary cost of proper living to, and maintain the health and welfare of employees

in this state." (§ 1178.5.) This includes workers on private construction contracts in California 

cities. We see nothing in the State Minimum Wage Law suggesting that the subject matter of

minimum wages has been so fully and completely covered as to clearly indicate it has become

exclusively a matter of state concern or of such paramount state concern that it will not tolerate

further or additional local action. The provisions of section 1182 to raise the state minimum wage

whenever the federal minimum wage is raised above the state minimum recognizes that the State

Minimum Wage Law is not exclusive. Similarly, section 1173 recognizes the overlapping

jurisdiction of the Occupational Safety and Health Standards Board. The existence of the Public 

Works Prevailing Wage Law establishing a different minimum wage (presumably a higher

"prevailing" wage) on public works contracts also indicates that the Legislature did not intend the

State Minimum Wage Law to be exclusive. Transient citizens of the state would not appear to be

affected by an ordinance establishing a higher minimum wage on private construction contracts in

the city than is required by the State Minimum Wage Law. We conclude that the State Minimum 

Wage Law does not preempt local minimum wage regulations by impliedly occupying the field of

minimum wage legislation. 

In Chavez v. Sargent, supra, the supreme court held that a county's "right-to-work"

ordinance which prohibited agreements which excluded any person from employment because of

non-membership in a labor organization was invalid because it conflicted with state statutes which

authorized and encouraged collective bargaining agreements, including agreements requiring all

employees to be members of a union. After quoting from the Pipoly case as we have above the court 

(at p. 177) stated: 

"State regulation of a subject may be so complete and detailed as to indicate

an intent to preclude local regulation. [citations] In this connection it may be

significant that the subject is one which, in our view, as in Tolman v. Underhill 

[(1952) 39 Cal.2d 708, 713] requires uniform treatment throughout the state.

Furthermore, and of significance in impelling a conclusion that no part of the local

ordinance can be effective, is the fact that in aspects wherein it does not substantially

either parallel or breach specific state legislation it conflicts, as hereinafter explained,

with a general legislative declaration of policy. [Citations.] 

". . . . . . . . . . . . . . . . . . . . . . . . . . . 

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"The Legislature has not enacted a completely detailed scheme of regulation

of the `field' which this ordinance is principally designed to affect; i.e., the legality

of jurisdictional (or jurisdictional-organizational) strikes and of union shop or

security agreements and conduct intended to attain or enforce such agreements, but

it has declared both a general policy and basic regulations in implementation thereof

which, as we view them, are fully comprehensive of the field. . . ." 

The Chavez case teaches that the legislative "field" of regulation of jurisdictional and organizational

strikes and of union shop agreements and conduct intended to attain or enforce such agreements has

been preempted by state law. It does not follow that other fields of labor contract regulation are

similarly preempted by state law. In fact the Chavez court (at p. 213) noted that the Legislature had

not stated what procedure for the attainment of union designation or authorization should be

followed by a union which represents some but not all of the employees of an employer who may

or may not desire union representation. Significantly for our purposes the Chavez court, in referring 

to such procedures (at p. 213) added: "The ordinance here under consideration does not properly

regulate these last mentioned matters which the Legislature has left unregulated." Had the ordinance 

addressed just these unregulated procedures the court suggests such regulation would have been

"proper." Thus the court recognized that there were areas of regulation of labor contracts, including

portions of the field of union shop regulation, which were not fully occupied by state law and were

therefore open to regulation by cities and counties. 

It has been suggested that an ordinance prohibiting the payment of less than the

prevailing wage on private construction projects in the city is preempted by federal law, specifically

the National Labor Relations Act and federal labor policy. The courts have rejected this suggestion

in Rivera v. Division of Industrial Welfare (1968) 265 Cal.App.2d 576, 602-604; California 

Manufacturers Assn. v. Industrial Welfare Commission (1980) 109 Cal.App.3d 95, 118-123; Skyline

Homes, Inc. v. Department of Industrial Relations (1985) 165 Cal.App.3d 239, 251. In the Rivera 

case (at p. 602) the court noted that preemption is primarily a matter of congressional intent citing

San Diego Bldg. Trades Council v. Garmon (1959) 359 U.S. 236. 239-240. In all three state cases 

cited above the court of appeals quoted a clause which has been a part of the Fair Labor Standards

Act ever since its enactment in 1938 (29 U.S.C. § 218): "No provision of this chapter or of any

order thereunder shall excuse noncompliance with any Federal or State law or municipal ordinance

establishing a minimum wage higher than the minimum wage established under this chapter . . ."

We conclude that a city ordinance prohibiting the payment of less than the prevailing wage on

private construction projects in the city is not preempted by federal law. 

We conclude that a city ordinance prohibiting the payment of less than the prevailing

wage fixed for public projects on all private construction projects in the city is within the legislative

powers of all California cities granted by article XI, section 7 of the California Constitution and that

such an ordinance would not be in conflict with general law within the meaning of that section or

in conflict with federal law. 

The Apprentice Program Ordinance 

The second question asks whether a California city has authority to enact an

ordinance prohibiting the employment of those who have not completed or are not engaged in an

apprentice program on private construction projects in the city? We have assumed that the 

apprentice programs referred to are those contemplated and regulated by the Apprentice Labor

Standards Act of 1939 (Lab. Code, § 3070 et seq.). 

Section 460 of the Business and Professions Code provides: 

9. 89-502
 
 

 

"No city or county shall prohibit a person, authorized by one of the agencies

in the Department of Consumer Affairs by a license, certificate, or other such means

to engage in a particular business, from engaging in that business, occupation, or

profession or any portion thereof. Nothing in this section shall prohibit any city or

county or city and county from levying a business license tax solely for revenue

purposes nor any city or county from levying a license tax solely for the purpose of

covering the cost of regulation." 

This section would preclude a city or county from prohibiting those licensed by the Board of

Architectural Examiners, the Contractors State License Board, the Board of Geologists and

Geophysicists, the Board of Landscape Architects, the Board of Registration for Professional

Engineers and Land Surveyors, and the Structural Pest Control Board from practicing their

professions and occupations within the scope of their respective licenses without further regulation

by a city or county except for a business tax for revenue purposes. 

Business and Professions Code section 7032 in the Contractor's State License Law 

(Bus. Prof. Code, § 7000 et seq.) states that that law does not limit the authority of cities and

counties to enact ordinances requiring building permits and inspections and adds: "Nothing

contained in this section shall be construed as authorizing a city or county to enact regulations

relating to the qualifications necessary to engage in the business of contracting." This language

reiterates the prohibition of section 460 quoted above with respect to those licensed by the

Contractors State License Board.5

 However, we are not aware of any state agency in the Department

of Consumer Affairs which licenses or otherwise regulates any person's practice of one of the

construction trades in California. We conclude that the ordinance contemplated by the second

question would not conflict with any state law. 

In our review of the police power we quoted at length from the opinion in Doyle v. Board 

of Barber Examiners, supra, tracing the development of economic legislation under the due process

clause of the Fourteenth Amendment. The Doyle case pointed out that the right to engage in a

legitimate employment or business receives recognition as a portion of the individual freedoms

secured by the due process provision of the federal and state Constitutions. It added that this 

freedom is subject to the state's police power, which is simply the power to subject individuals to

reasonable regulation for the purpose of achieving governmental objectives such as the public safety,

health, morals and public welfare. Specifically, for the purpose of the second question, the Doyle

court added: "In the field of occupational licensing the requirement must have a `rational connection'

with fitness to practice the particular vocation or profession; otherwise it is discriminatory and

arbitrary." In support of the last quoted statement the Doyle court cited Whitcomb v. Emerson 

(1941) 46 Cal.App.2d 263, 273-274. 

In Whitcomb v. Emerson, supra, plaintiff challenged a state statute requiring her to have a

license to practice cosmetology which was defined to include upper body massage and hairdressing.

Since her long established practice was confined to upper body massage she objected to the

requirement that she learn hairdressing to obtain the license to continue her practice. The court held 

the statute unconstitutional. In its opinion the court, at p. 273, observed: 

5

To the extent that 43 Ops.Cal.Atty.Gen. 115 (1964) indicates that the field of regulation

preempted by the Contractors State License Law extends to the regulation of the competency of

employees of contractors who are exempted from licensure under that law, that opinion is

disapproved. In our view the legislative purpose of the exemption for employees was simply to

exempt them from being licensed as contractors, not that they were to be exempt from any other

form of regulation. 

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"In approaching the problem here involved we deem these truths to be

established by reason and law. Those things which are of themselves evil may be 

prohibited. Those things which, though not evil in themselves, if practiced by those

not adequately trained therein by education and experience, or by those not morally

qualified or of sufficient age or discretion, may endanger the health, safety, morals

or general welfare of the people, may not be prohibited but may be controlled by

reasonable regulation. 

". . . . . . . . . . . . . . . . . . . . . . . . . 

". . . The power of the state to provide for the general welfare of its people

authorizes it to prescribe all such regulations as in its judgment will secure or tend

to secure them against the consequences of ignorance and incapacity, as well as

deception and fraud. As one means to this end it has been the practice of different

states, from time immemorial, to exact in many pursuits a certain degree of skill and

learning upon which the community may confidently rely; their possession being

generally ascertained upon an examination of parties by competent persons, or

inferred from a certificate to them in the form of a diploma or license from an

institution established for instruction on the subjects, scientific and otherwise, with

which such pursuits have to deal. The nature and extent of the qualifications

required must depend primarily upon the judgment of the state as to their necessity.

 If they are appropriate to the calling or profession, and attainable by reasonable

study or application, no objection to their validity can be raised because of their

stringency or difficulty. It is only when they have no relation to such calling or

profession, or are unattainable by such reasonable study and application that they can

operate to deprive one of his right to pursue a lawful vocation.' (Dent v. West 

Virginia [1889] 129 U.S. 114.)" 

In Rees v. Department of Real Estate (1977) 76 Cal.App.3d 286, Rees appealed an

order prohibiting him from acting as an advance fee rental agent without having a license required

by state law. He argued there was no reasonable relationship between the skills required in the

conduct of his business and those subject to regulation under the real estate licensing laws citing

Whitcomb v. Emerson, supra. The court observed (on p. 298) that the Whitcomb case was the 

product of an "era less receptive to economic legislation," quoting from Varanelli v. Structural Pest 

Control Board (1969) 1 Cal.App.3d 217, 222. The Rees court (at p. 299) also quoted from the 

Varanelli case as follows: "The current doctrine of judicial review of the reasonableness of

regulatory legislation is that judicial examination of a statute under economic due process attack is

completed when any fact or facts appear, or may be hypothesized, which the Legislature might

rationally have accepted as the basis for a finding of public interest." After inferring a legitimate

public purpose to protect prospective renters from the actions of unprincipled or unqualified

individuals the court held that the licensing law met constitutional due process requirements. 

We have little difficulty in hypothesizing a public safety purpose for an ordinance

which prohibits the employment of persons in the construction trades who do not possess a certain

level of skill and knowledge in their respective trades. That a state may impose requirements on

those who practice the building trades as well as other occupations and professions to assure some

degree of skill and competence for the protection of the public under its police powers we have no

doubt.6 Since the State Legislature has not seen fit to preempt this field of legislation, California 

6

"Plumbers and plumbing are subject to reasonable municipal regulation under the police power

to protect the public health and welfare." (McQuillin, Municipal Corporations, § 24.338 (3d Ed.).) 

11. 89-502 
counties and cities possess the same legislative power under article XI, section 7 of the California

Constitution. We think that participation in or completion of an apprenticeship program would be

a reasonable measure of the skill and knowledge needed to protect the safety of the public in a

private construction project. We assume that any ordinance imposing such requirements would be

sufficiently certain to avoid the procedural due process infirmities of vagueness and overbreadth.

(See People v. Katrinak (1982) 136 Cal.App.3d 145, 156-157.) We conclude that an ordinance 

which prohibited those who had not completed or were not engaged in an apprenticeship program

from employment on private construction projects in the city would meet constitutional due process

requirements. 

An ordinance which prohibits those who have not completed or are not engaged in

an apprenticeship program from employment in private construction projects in the city classifies

those who have learned their trade in an apprenticeship program apart from those who have learned

the trade in some other manner. Such classification requires a consideration whether the ordinance

meets constitutional requirements for equal protection of the laws. The courts have developed two

tests for determining whether equal protection requirements are met depending on the nature of the

classification. The conventional "rational relationship" test is traditionally applied in cases

involving occupational licensing although in certain cases involving occupational regulation the

more stringent "strict scrutiny" test has been employed. (D'Amico v. Board of Medical Examiners 

(1974) 11 Cal.3d 1, 17.) 

The "rational relationship" test "requires merely that distinctions drawn by a

challenged statute bear some rational relationship to a conceivable legitimate state purpose.

[Citation.] So long as such a classification does not permit one to exercise the privilege while

refusing it to another of like qualifications, under like conditions and circumstances, it is

unobjectionable upon this [equal protection] ground. Moreover, the burden of demonstrating the

invalidity of a classification under this standard rests squarely upon the party who assails it.

[Citations.]" (D'Amico v. Board of Medical Examiners, supra, at pp. 16-17.) "A more stringent test

is applied, however, in cases involving `suspect classifications' or touching on `fundamental

interests.' Here the courts adopt an attitude of active and critical analysis, subjecting the

classification to strict scrutiny. [citations] Under the strict standard applied in such cases, the state

bears the burden of establishing not only that it has a compelling interest which justifies the law but 

that the distinctions drawn by the law are necessary to further its purpose." (D'Amico v. Board of 

Medical Examiners, supra, at p. 17; emphases by the court.) 

In view of the court's review of the cases and the limitation on the application of the

strict scrutiny test to classifications in occupational licensing laws in D'Amico v. Board of Medical 

Examiners, supra, at pages 17-18 we believe the courts would apply the rational relationship test

to the classification created by the ordinance contemplated in the second question. (See also 

Goodman v. Cory (1983) 142 Cal.App.3d 737, 743-744.) 

In the D'Amico case the court considered a state statute which barred holders of D.O. 

degrees from osteopathic colleges from licensure as physicians and surgeons without respect to the

school conferring that degree or the applicant's ability to pass the examination. (Id. at 19, fn. 14.)

The court held that the decision of the Court of Appeal that the "strict scrutiny" test applied to the 

And see Application of Beaver (1946) 60 N.Y.S.2d 675 in which the court denied Beaver's

application for an order directing the Board of Plumbers and Plumbing for the City of White Plains

to certify him as a master plumber when he had passed the examination but had no experience where

the statute required him to submit to an examination by the board on both this experience and

qualifications. 

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classification created by the statute was erroneous but nevertheless concluded that the statute

violated equal protection requirements applying the conventional "rational relationship" test. The 

court noted (at p. 22) that the "only legitimate state interest which might conceivably be advanced

by the classification in question is that of protecting the public of this state from harm suffered at

the hands of poorly trained or incompetent medical practitioners." It was established (id. at 23) that

osteopathy, like allopathy, is a complete school of medicine and surgery whose practitioners

successfully engage in the full range of activities commonly thought of as constituting the practice

of medicine. The court held that the statutes which "forbid the licensure of graduates of osteopathic

colleges as physicians and surgeons in this state regardless of individual qualifications, deny to

plaintiffs the equal protection of the laws guaranteed by our state and federal Constitutions and are

therefore to that extent void and of no effect." (Id. at p. 24.) The court further held that plaintiffs

were entitled to take the tests for licensure as a physician and surgeon in California.

 Completion of an apprentice program is not the only way a person may acquire the

requisite knowledge and skills to practice one of the construction trades. The same competence

produced by an apprentice program might be acquired in a trade school, or by training and

experience gained in the military or other governmental service, or by training and experience in a

different city, state or country not having apprenticeship requirements. Unless the city's ordinance

makes some provision which would allow practice of a trade by those determined to have knowledge

and skill to practice a trade equivalent to that provided by an apprenticeship program but who

acquired such competence in some other manner a court might find the ordinance denies equal

protection of the laws to such persons. 

We believe that a California city has authority under article XI, Section 7 of the

California Constitution to impose requirements on those who practice the building trades within the

city to assure some degree of skill and competence for the protection of the public. While such 

requirements often take the form of testing for the requisite knowledge and skill a city may utilize

some other criteria which might reasonably demonstrate the requisite knowledge and skill. This 

might include successful completion of specified trade schooling or practice of the trade for a

specified period. We believe that a court would find that completion of an apprentice program

would be a reasonable method of assuring that a person has the requisite knowledge and skill to

practice the trade. We also believe that permitting a person to engage in a trade as an apprentice

with the supervision required by the apprentice program would also be found to be a reasonable

exception to such a requirement. However, any such requirements must make provision for those

who have learned a trade in some other manner to demonstrate that they have acquired the

knowledge and skill equivalent to that gained in an apprentice program which would then authorize

them to practice their trade in the city. 

We conclude that a California city has authority to establish minimum levels of

knowledge and skill required to permit employment on private construction projects in the city,

including completion of or engagement in an apprenticeship program assuming provision is made

for demonstration of the existence of the required knowledge and skills by other means as well. 

* * * * * 

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