If the board determines that a position is covered by the retirement system, any person in the position is eligible to become a member of the retirement system. If the person is a member of another State-administered or county or municipal retirement system, the person may transfer membership in the other retirement system to the Police and Firemen's Retirement System in accordance with the provisions of P.L. 1973, c.156 (C.43:16A-62 et seq.). Any time period under P.L. 1973, c.156 calculated from the effective date of that act shall be calculated from the effective date of this amendatory and supplementary act for the purposes of this act.
A person employed in a position on or after the effective date of a determination by the board of trustees that the position is covered by the retirement system is required to enroll in the retirement system as a condition of employment, provided the person is otherwise eligible for membership by meeting the appointment, age and health requirements prescribed for all members. A person employed in a position covered by the retirement system and eligible for membership in the retirement system is ineligible for membership in any other State-administered or county or municipal retirement system.
N.J.S. § 43:16A-1.2