Tex. Loc. Gov't Code § 81.002
(a) Before undertaking the duties of the county judge or a county commissioner, a person must take the official oath and swear in writing that the person will not be interested, directly or indirectly, in a contract with or claim against the county except:
(b) A commissioner must execute a bond, payable to the county treasurer, in the amount of $3,000. The bond must be approved by the county judge and must be conditioned on the faithful performance of the commissioner's official duties. The bond must also be conditioned that the commissioner:
Acts 1987, 70th Leg., ch. 149, Sec. 1, eff. Sept. 1, 1987.
Amended by Acts 1989, 71st Leg., ch. 475, Sec. 1, eff. Aug. 28, 1989;
Acts 1999, 76th Leg., ch. 62, Sec. 13.02, eff. Sept. 1, 1999.