Tex. Gov't Code § 834.001
The types of benefits payable by the retirement system are:
Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981. Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 44.001 by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989.
Acts 2019, 86th Leg., R.S., Ch. 1121 (H.B. 2384), Sec. 22, eff. September 1, 2019.