California Code, Education Code - EDC § 22718

(1)(A) In addition to the certification of unused basic sick leave days, the employer shall also certify the number of unused excess sick leave days.

(B) Excess sick leave days granted by an employer other than the member's last employer shall be deemed to be granted by the last employer and shall be included in the certification if the member was eligible to use those excess sick leave days while the member was employed by the last employer. If, during the last year a member is employed to perform creditable service subject to coverage by the Defined Benefit Program, that member is employed by more than one employer, unused excess sick leave days shall be certified and paid for by the employer for the period in which the member was eligible to use those excess sick leave days.

(3)(A) The employer shall remit the amount billed to the system with the certification required by Section 22717 within 30 days after the effective date of the member's retirement or within 30 days after the date the system has notified the employer that a certification must be made, whichever is later.

(B) If payment is not received within 30 calendar days, the present value shall be recalculated to include regular interest from the due date to the date full payment is received.

(C) If the system has billed the employer for an additional amount, the employer shall remit the additional amount within 30 calendar days after the date of the billing. If payment is not received for the additional amount within 30 calendar days, the present value shall be recalculated to include regular interest from the due date to the date full payment is received.