California Code, Government Code - GOV § 19872

(a) The disabled employee shall not receive temporary disability indemnity or sick leave or annual leave with pay for any period for which he or she receives industrial disability leave.

(b) Notwithstanding subdivision (a), an employee may elect to supplement industrial disability leave payments from the 23rd workday with accrued leave credits including annual leave, vacation, sick leave, or compensatory time off (CTO) in an amount necessary to approximate the employee's full net pay. Partial supplementation shall be allowed, but fractions of less than one hour shall not be permitted. Once the level of supplementation is selected, it may be decreased to accommodate a declining leave balance but it may not be increased. Reductions to supplementation amounts shall be made on a prospective basis only. The department may adopt rules for the administration and enforcement of this subdivision.

(c) If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Section 3517.5, the memorandum of understanding shall be controlling without further legislative action, except that if such provisions of a memorandum of understanding require the expenditure of funds, the provisions shall not become effective unless approved by the Legislature in the annual Budget Act.