California Code, Government Code - GOV § 19261

(a) The Department of Human Resources may establish standards of health and safety in state agencies and may develop a comprehensive health and safety program designed to improve the efficiency and raise the morale of state employees.

Nothing in this section or in the standards established thereunder shall discriminate against treatment by prayer or spiritual means nor require physical examination of any employee who files with the board an affidavit setting forth that he or she depends exclusively upon prayer for healing in accordance with the teachings of a bona fide religious sect, denomination or organization and that he or she is to the best of his or her knowledge and belief in good health and that he or she claims exemption on such grounds, except that when there is probable cause to believe that such employee is not physically able to perform the duties of his or her employment, the board may require a physical examination of the employee sufficient to indicate whether or not he or she is able to perform the duties of his or her employment.

(b) If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Section 3517.5, the memorandum of understanding shall be controlling without further legislative action, except that if such provisions of a memorandum of understanding require the expenditure of funds, the provisions shall not become effective unless approved by the Legislature in the annual Budget Act.