Tex. Gov't Code § 812.202
(a) The payment of benefits to a retiree is not affected by:
Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981. Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 22.202 by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989.
Amended by Acts 1991, 72nd Leg., ch. 850, Sec. 3, eff. Sept. 1, 1991;
Acts 2001, 77th Leg., ch. 715, Sec. 1, eff. Sept. 1, 2001.