Tex. Gov't Code § 411.00741
(a) The department may require a commissioned or noncommissioned officer or employee of the department to submit to the administration of a polygraph examination administered by a polygraph examiner if:
(b) If an officer or employee does not submit to the administration of a polygraph examination required under Subsection (a), the department may, as applicable:
Added by Acts 2007, 80th Leg., R.S., Ch. 362 (S.B. 295), Sec. 1, eff. June 15, 2007.