Cal. Public Utilities Code § 170024

(a) Upon request of the board of directors of the authority, and with the consent of any labor organization acting as the exclusive representative of employees of the authority whose rights are governed by a collective bargaining agreement, the board may enter into a contract to enroll those employees as members of the California Public Employees’ Retirement System (CalPERS) or another retirement system. (b) A contract to enroll employees in CalPERS shall be subject to the provisions of Part 3 (commencing with Section 20000) of Division 5 of Title 2 of the Government Code and, where permitted by the law governing that system, shall receive full reciprocity with public employees’ retirement systems in which they previously participated. (c) Employees transferred from any existing retirement system or pension plan to CalPERS or any other retirement system by operation of this section shall receive benefits immediately after enrollment in, or transfer to, the system that are equal to the benefits the employees would have been entitled to immediately before enrollment in, or transfer to, the system.