Cal. Government Code § 12920

It is hereby declared as the public policy of this state that it is necessary to protect and safeguard the right and opportunity of all persons to seek, obtain, and hold employment without discrimination or abridgment on account of race, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, age, sexual orientation, reproductive health decisionmaking, or military and veteran status. It is recognized that the practice of denying employment opportunity and discriminating in the terms of employment for these reasons foments domestic strife and unrest, deprives the state of the fullest utilization of its capacities for development and advancement, and substantially and adversely affects the interests of employees, employers, and the public in general. Further, the practice of discrimination because of race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, marital status, national origin, ancestry, familial status, source of income, disability, veteran or military status, or genetic information in housing accommodations is declared to be against public policy. It is the purpose of this part to provide effective remedies that will eliminate these discriminatory practices, including discrimination not just because of one protected trait, but also because of the combination of two or more protected bases. This part shall be deemed an exercise of the police power of the state for the protection of the welfare, health, and peace of the people of this state.