Tex. Civ. Prac. & Rem. Code § 171.049
The arbitrators, or an arbitrator at the direction of the arbitrators, may administer to each witness testifying before them the oath required of a witness in a civil action pending in a district court.
Added by Acts 1997, 75th Leg., ch. 165, Sec. 5.01, eff. Sept. 1, 1997.