California Code, Government Code - GOV § 20687

(a) The normal rate of contribution for state peace officer/firefighter members subject to Section 21363, 21363.1, 21363.3, 21363.4, or 21363.8 shall be 8 percent of the compensation in excess of two hundred thirty-eight dollars ($238) per month paid to those members.

(b) If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Section 3517.5 or pursuant to Chapter 12 (commencing with Section 3560) of Division 4 of Title 1, the memorandum of understanding shall be controlling without further legislative action, except that if those provisions of a memorandum of understanding require the expenditure of funds, those provisions shall not become effective unless approved by the Legislature in the annual Budget Act.

(c) The Director of Human Resources may establish the normal rate of contribution for a state employee who is excepted from the definition of “state employee” in subdivision (c) of Section 3513, and an officer or employee of the executive branch of state government who is not a member of the civil service. The normal rate of contribution shall be the same for all members identified in this subdivision. The contribution rate shall be effective the beginning of the pay period indicated by the Director of Human Resources but shall be no earlier than the beginning of the pay period following the date the board receives notification.