Tex. Spec. Dist. Code § 1104.058
A director or officer serves without compensation but may be reimbursed for actual expenses incurred in the performance of official duties. The expenses must be:
Added by Acts 2011, 82nd Leg., R.S., Ch. 70 (S.B. 1147), Sec. 1.01, eff. April 1, 2013.