Cal. Government Code § 20037.15

(a) Notwithstanding Sections 3517.8, 20035, and 20037, final compensation for a person who is employed for the first time and becomes a member of the system on or after January 15, 2011, means the highest average annual compensation earnable by the member during any consecutive 36-month period preceding the effective date of his or her retirement or the date of his or her last separation from state service if earlier. (b) This section applies to the following: (1) Service credit accrued while a member of State Bargaining Unit 6 or 9 or in a class related to State Bargaining Unit 6 or 9 as an employee who is excepted from the definition of “state employee” in subdivision (c) of Section 3513, or an officer or employee of the executive branch of state government who is not a member of the civil service. (2) Service credit accrued while a peace officer/firefighter member represented by State Bargaining Unit 7 or in a class related to peace officer/firefighter members in State Bargaining Unit 7 as an employee who is excepted from the definition of “state employee” in subdivision (c) of Section 3513, or an officer or employee of the executive branch of state government who is not a member of the civil service. (3) Service credit accrued as an employee who is excepted from the definition of “state employee” in subdivision (c) of Section 3513, or an officer or employee of the executive branch of state government who is not a member of the civil service. (4) Service credit accrued as an employee of the Legislature, the judicial branch, or the California State University. (c) This section does not apply to: (1) Former employees previously employed before January 15, 2011, who return to employment on or after January 15, 2011, and who were previously subject to a 12-month average. (2) State employees hired prior to January 15, 2011, who were subject to Section 20281.5 during the first 24 months of state employment, and who were previously subject to a 12-month average. (3) State employees hired prior to January 15, 2011, who become subject to representation by State Bargaining Unit 6, 7, or 9 on or after January 15, 2011, and who were previously subject to a 12-month average. (4) Employees on an approved leave of absence employed before January 15, 2011, who return to active employment on or after January 15, 2011, and who were previously subject to a 12-month average. (d) If this section is in conflict with a memorandum of understanding that is current and in effect on January 15, 2011, the memorandum of understanding shall be controlling while it remains in effect. Upon expiration of the memorandum of understanding that is in effect and current on January 15, 2011, this section shall be controlling and may not be superseded by a subsequent memorandum of understanding.