(b) To obtain credited service under this section, an employee shall elect to do so and shall verify the period of temporary service. When eligibility for temporary service credit has been established, an indebtedness shall be determined as provided in (a) of this section. Any outstanding indebtedness existing at the time an employee retires requires an actuarial adjustment to the benefits payable based on the temporary service. Interest as prescribed by regulation accrues on the indebtedness beginning
- (1) July 1, 1981, or one year following the date the employee first becomes vested, whichever is later, for an employee who claims temporary service credit no more than one year after the employee becomes vested;
- (2) the date of vesting, for an employee who becomes vested after June 30, 1980, who is claiming temporary service credit more than one year after vesting for service performed before the employee vested;
- (3) July 1, 1980, for an employee who became vested before July 1, 1980, who is claiming temporary service credit after June 30, 1981, for service performed before July 1, 1980;
- (4) one year after completing the temporary service, for an employee who was vested on the last day of employment as a temporary employee and who claims the temporary service no more than one year after completing the service;
- (5) on the date of completing the temporary service, for an employee who was vested on the last day of employment as a temporary employee and who claims temporary service more than one year after completing the service.