Sec. 13. RESUMPTION OF SERVICE AS DEPARTMENT HEAD AFTER RETIREMENT. (a) The pension system shall suspend all pension payments to a retired member who has separated from service and is subsequently appointed as the department head of the police department. The suspension of payments begins on the effective date of the person's appointment.

(b) Pension benefits based on the person's previous period of service do not accrue during the period of pension payment suspension described by Subsection (a) of this section, but the person again becomes an active member during this period, and contributions of the city and the department head for the subsequent service are payable during the period. The department head retains credit for all previous service and acquires credit for the subsequent service unless the department head is or becomes a DROP participant.

(c) Once the department head again separates from service, pension benefits under this article shall resume based on both periods of service.