Tex. Loc. Gov't Code § 180.003
(b) Hours of duty over 48 hours a week, compiled by a peace officer under Subsection (a), may be treated as overtime and may be deducted from future required hours of duty if:
Acts 1987, 70th Leg., ch. 149, Sec. 1, eff. Sept. 1, 1987.
Amended by Acts 1991, 72nd Leg., ch. 597, Sec. 93, eff. Sept. 1, 1991;
Acts 2001, 77th Leg., ch. 669, Sec. 72, eff. Sept. 1, 2001.
Acts 2011, 82nd Leg., R.S., Ch. 1163 (H.B. 2702), Sec. 77, eff. September 1, 2011.