A.(1) Any member whose first employment making him eligible for service in one of the state systems occurred on or before June 30, 2015, who has credit for five or more years of service may withdraw from service and elect to leave his accumulated contributions in the system and, upon reaching age sixty, he shall receive a retirement allowance based on the credits he had at the time of his withdrawal from service.
(2) Any member whose first employment making him eligible for membership in one of the state systems occurred on or after July 1, 2015, who has credit for five or more years of service may withdraw from service and elect to leave his accumulated contribution in the system and, upon reaching age sixty-two, he shall receive a retirement allowance based on the credits he had at the time of his withdrawal from service.
B.(1) The retirement allowance under this Section shall be due and payable by the system effective the first day of the month following the attainment of the age required pursuant to Subsection A of this Section, but shall not be paid until a written application for retirement is executed and filed with the system.
(2) Any member who withdraws from service and elects to take advantage of this Section shall be provided a written commitment by the system concerning his future retirement rights.
C. This Section shall become effective September 12, 1980, and shall not be retroactive and shall not apply to any other type of retirement.