Except as provided by Section 554.006, a public employee who seeks relief under this chapter must sue not later than the 90th day after the date on which the alleged violation of this chapter:

1. (1) occurred; or
2. (2) was discovered by the employee through reasonable diligence.

Added by Acts 1993, 73rd Leg., ch. 268, Sec. 1, eff. Sept. 1, 1993.