Tex. Government Code § 33.026: WITNESS IMMUNITY.

(a) In a proceeding or deposition related to a proceeding before the commission, a special master, or a special court of review, the commission, special master, or special court of review may compel a person other than the judge to testify or produce evidence over the person's claim of privilege against self-incrimination.

(b) A person compelled to testify over a proper claim of privilege against self-incrimination is not subject to indictment or prosecution for a matter or transaction about which the person truthfully testifies or produces evidence.

(c) A special master has the same powers as a district judge in matters of contempt and granting immunity.

Acts 1985, 69th Leg., ch. 480, Sec. 1, eff. Sept. 1, 1985. Amended by Acts 1999, 76th Leg., ch. 462, Sec. 10, eff. June 18, 1999.