The accrued liability contribution of any public employer adopting the retirement system after July 1, 1971 for the purpose of providing prior service credit for the service rendered prior to July 1, 1966, shall be payable by the employer to the contingent reserve fund over a period of not less than 25 years following the initial valuation of such liability by the actuary of the retirement system.

L.1971, c. 213, s. 49, eff. June 17, 1971.