California Code, Government Code - GOV § 20683

(a) For each state member subject to Section 21369 or 21369.1, the normal rate of contribution shall be 6 percent of compensation in excess of three hundred seventeen dollars ($317) per month paid to a member whose service is not included in the federal system or in excess of five hundred thirteen dollars ($513) for one whose service is included in the federal system. 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 those provisions of the memorandum of understanding require the expenditure of funds, those provisions shall not become effective unless approved by the Legislature in the annual Budget Act.

(b) 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.

(c) For each local safety member subject to Section 21369, the normal rate of contribution shall be 7 percent of compensation.

(d) The normal rate of contribution as established under this section for a local member whose service is included in the federal system and whose retirement allowance is reduced because of that inclusion shall be reduced by one-third as applied to compensation not exceeding four hundred dollars ($400) per month for service rendered after the date of execution of the modification of the federal-state agreement including those services in the federal system and prior to termination of his or her coverage under the federal system.

(e) The operative date of this section with respect to a local safety member shall be the date upon which he or she becomes subject to Section 21369.