Tex. Gov't Code § 31.004
The compensation authorized by this chapter shall be paid in:
Acts 1985, 69th Leg., ch. 480, Sec. 1, eff. Sept. 1, 1985.
Acts 2013, 83rd Leg., R.S., Ch. 194 (S.B. 560), Sec. 2, eff. September 1, 2013.