La. Consolidated Public Retirement § 11:224
If any disability retiree of a state or statewide retirement system who is under the age of sixty years is restored to active service, his retirement allowance shall cease, he shall again become a member of the retirement system, and he shall contribute thereafter at the current rate in effect at the time he is restored to service, and if he contributes for at least three years, the period of time on disability shall be counted as accredited service for purposes of establishing retirement eligibility, but not for computation of benefits. Any prior service certificate on which his service was computed at the time of his retirement shall be restored to full force and effect and, in addition, upon his subsequent retirement he shall be credited with all his service as a member. This Section shall apply to all disability retirees, regardless of the date they qualified for a disability retirement benefit.
La. Consolidated Public Retirement § 11:224