Texas Government Code - GOV'T § 554.006. Use of Grievance or Appeal Procedures

(a) A public employee must initiate action under the grievance or appeal procedures of the employing state or local governmental entity relating to suspension or termination of employment or adverse personnel action before suing under this chapter.

(b) The employee must invoke the applicable grievance or appeal procedures not later than the 90th day after the date on which the alleged violation of this chapter:

(c) Time used by the employee in acting under the grievance or appeal procedures is excluded, except as provided by Subsection (d), from the period established by Section 554.005.

(d) If a final decision is not rendered before the 61st day after the date procedures are initiated under Subsection (a), the employee may elect to: