Cal. Civ. Code § 213.055

1. It shall be an unlawful employment practice:

(1) For an employer, because of the race, color, religion, national origin, sex, ancestry, age or disability of any individual:

(a) To fail or refuse to hire or to discharge any individual, or otherwise to discriminate against any individual with respect to his compensation, terms, conditions, or privileges of employment, because of such individual's race, color, religion, national origin, sex, ancestry, age or disability;

(b) To limit, segregate, or classify his employees or his employment applicants in any way which would deprive or tend to deprive any individual of employment opportunities or otherwise adversely affect his status as an employee, because of such individual's race, color, religion, national origin, sex, ancestry, age or disability;

(2) For a labor organization to exclude or to expel from its membership any individual or to discriminate in any way against any of its members or against any employer or any individual employed by an employer because of race, color, religion, national origin, sex, ancestry, age or disability of any individual; or to limit, segregate, or classify its membership, or to classify or fail or refuse to refer for employment any individual, in any way which would deprive or tend to deprive any individual of employment opportunities, or would limit such employment opportunities or otherwise adversely affect his status as an employee or as an applicant for employment, because of such individual's race, color, religion, national origin, sex, ancestry, age or disability; or for any employer, labor organization, or joint labor-management committee controlling apprenticeship or other training or retraining, including on-the-job training programs to discriminate against any individual because of his race, color, religion, national origin, sex, ancestry, age or disability in admission to, or employment in, any program established to provide apprenticeship or other training;

(3) For any employer or employment agency to print or circulate or cause to be printed or circulated any statement, advertisement or publication, or to use any form of application for employment or to make any inquiry in connection with prospective employment, which expresses, directly or indirectly, any limitation, specification, or discrimination, because of race, color, religion, national origin, sex, ancestry, age or disability unless based upon a bona fide occupational qualification or for an employment agency to fail or refuse to refer for employment, or otherwise to discriminate against, any individual because of his or her race, color, religion, national origin, sex, ancestry, age as it relates to employment, or disability, or to classify or refer for employment any individual because of his or her race, color, religion, national origin, sex, ancestry, age or disability.

2. Notwithstanding any other provision of this chapter, it shall not be an unlawful employment practice for an employer to apply different standards of compensation, or different terms, conditions or privileges of employment pursuant to a bona fide seniority or merit system, or a system which measures earnings by quantity or quality of production or to employees who work in different locations, provided that such differences or such systems are not the result of an intention or a design to discriminate, and are not used to discriminate, because of race, color, religion, sex, national origin, ancestry, age or disability, nor shall it be an unlawful employment practice for an employer to give and to act upon the results of any professionally developed ability test, provided that such test, its administration, or action upon the results thereof, is not designed, intended or used to discriminate because of race, color, religion, national origin, sex, ancestry, age or disability.

3. Nothing contained in this chapter shall be interpreted to require any employer, employment agency, labor organization, or joint labor-management committee subject to this chapter to grant preferential treatment to any individual or to any group because of the race, color, religion, national origin, sex, ancestry, age or disability of such individual or group on account of an imbalance which may exist with respect to the total number or percentage of persons of any race, color, religion, national origin, sex, ancestry, age or disability employed by any employer, referred or classified for employment by any employment agency or labor organization, admitted to membership or classified by any labor organization, or admitted to or employed in any apprenticeship or other training program, in comparison with the total number or percentage of persons of such race, color, religion, national origin, sex, ancestry, age or disability in any community, state, section, or other area, or in the available workforce in any community, state, section, or other area.

4. Notwithstanding any other provision of this chapter, it shall not be an unlawful employment practice for the state or any political subdivision of the state to comply with the provisions of 29 U.S.C. Section 623 relating to employment as firefighters or law enforcement officers.