California Code, Government Code - GOV § 22873

(a) Notwithstanding Section 22871, a state employee first hired on or after January 1, 1985, may not be vested for the full employer contribution payable for annuitants unless he or she has 10 years of credited state service at the time of retirement.  The employer contribution payable for annuitants with less than 10 years of service shall be prorated based on credited state service at the time of retirement.  This section shall apply only to state employees who retire for service.  For purposes of this section, “state service” includes all municipal, superior, and justice court services rendered by a justice of the Supreme Court or court of appeal, or by a judge of the superior court.

(b) This section does not apply to employees of the California State University or of the Legislature.