California Code, Government Code - GOV § 7522.43

(a) A public employer shall not offer a plan of replacement benefits for members and any survivors or beneficiaries whose retirement benefits are limited by Section 415 of Title 26 of the United States Code.  This section shall apply to new members.

(b) A public retirement system may continue to administer a plan of replacement benefits for employees first hired prior to January 1, 2013.

(c) A public employer that does not offer a plan of replacement benefits prior to January 1, 2013, shall not offer such a plan for any employee on or after January 1, 2013.

(d) A public employer that offers a plan of replacement benefits prior to January 1, 2013, shall not offer such a plan to any additional employee group to which the plan was not provided prior to January 1, 2013.