1. A member who is not an active member of any other retirement system in the state which is maintained in whole or in part by public contributions may remain in service beyond the date the member attains the age of sixty-five. The employer shall not consider age as a factor in determining the continuation of the member’s service.
 2. A member remaining in service after attaining the age of seventy years is entitled to receive a retirement allowance under sections 97B.49A through 97B.49H, as applicable, without terminating employment.