Cal. Government Code § 31680.3

(a) Notwithstanding Section 31680.2, any member who has been covered under the provisions of Section 31751 and has retired may be reemployed in a position requiring special skills or knowledge, as determined by the county or district employing the member, for a period of time not to exceed 120 working days or 960 hours, whichever is greater, in any one fiscal year and may be paid for that employment. That employment shall not operate to reinstate the person as a member of this system or to terminate or suspend the person’s retirement allowance, and no deductions shall be made from the person’s salary as contributions to this system. (b) (1) This section shall not apply to any retired member who is otherwise eligible for reemployment under this section if, during the 12-month period prior to an appointment described in this section, that retired person receives unemployment insurance compensation arising out of prior employment subject to this section with the same employer. (2) A retired person who accepts an appointment after receiving unemployment insurance compensation as described in this subdivision shall terminate that employment on the last day of the current pay period and shall not be eligible for reappointment subject to this section for a period of 12 months following the last day of employment. (c) Beginning January 1, 2013, if any provision of this section conflicts with the California Public Employees’ Pension Reform Act of 2013, the provisions of that act shall prevail.