Sec. 853.107.  VOID PRIOR SERVICE CERTIFICATE.  (a)  When a person's membership in the retirement system is terminated, any prior service certificate issued to the person becomes void.
(b)  A person whose membership has terminated and who subsequently resumes membership in the retirement system is not entitled to credit for prior service.
Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981.  Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 63.107 by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989.