La. R.S. 23:1017.4

For purposes of benefits furnished by the employer and participated in by the employee at the time of departure, such leave of absence shall not be considered a break in employment for purposes of seniority or length of service or for benefits programs offered by that employer. Continuation of any retirement or health benefits requiring the employee's contribution or copayments will be subject to the stated terms and conditions of the benefit plans and are subject to applicable federal or state laws.