Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4911 and 74-4913 and Kan. Stat. Ann. § 74-4902, and any amendments to such statutes, to the contrary, an employee who was born October 25, 1920, and who was employed by a participating employer on August 17, 1981, shall be a member of the Kansas public employees retirement system as of August 18, 1982. Such employee shall be considered to have been in the year of waiting for membership for purposes of group insurance benefits. Upon the attainment of membership under this section, such employee and such employee’s participating employer shall thereafter be governed by the provisions of the Kansas public employees retirement system, Kan. Stat. Ann. § 74-4901 et seq., and acts amendatory thereof or supplemental thereto.