Cal. Gov. Code § 31840.2
The provisions of this article extending rights to a member of a county retirement system established under this chapter or subjecting him or her to any limitation by reason of his or her membership in the Public Employees' Retirement System shall apply in like manner and under like conditions to a member by reason of his or her membership in any retirement system established under Chapter 2 (commencing with Section 45300) of Division 5 of Title 4 with respect to which an ordinance complying with Section 45310.5 has been filed with and accepted by the board or by reason of his or her membership in a retirement system established by or pursuant to the charter of a city or city and county or by any other public agency of this state which system, in the opinion of the board, provides a similar modification of rights and benefits because of membership in a system established under this chapter and with respect to which the governing body of such city, city and county or public agency and the board have entered into agreement pursuant to Section 20351. This section shall apply only to a member whose termination and subsequent reentry into employment resulting in a change in membership from a system established under this chapter to such other system or from such other system to a system established under this chapter occurred after such acceptance or determination by the board; provided, however, that provisions relating to computation of final compensation shall apply to any other member if such provision would have applied had the termination and entry into employment occurred after such acceptance or determination by the board.
As used in this section, "board" means the Board of Administration of the Public Employees' Retirement System.
Ca. Gov. Code § 31840.2