The service of a member of this fund shall date from his first employment in the department provided such service has not been broken or interrupted for causes not excused and condoned by this Part. The service date of a member reemployed after having resigned from the department or reemployed after having been discharged without reinstatement shall date from the date of said reemployment. The service date of a member reinstated after dismissal (not reemployed) shall date from the date of his first employment.
La. Consolidated Public Retirement § 11:3779