In Cnty. of Bexar v. Steward, 139 S.W.3d 354 (Tex. App.--San Antonio 2004, no pet.), the plaintiff was given notice of his demotion a month prior to his actual demotion. 139 S.W.3d at 356--57.
In the intervening time, the plaintiff made a report to internal affairs. Id.
But because the decision had already been made to demote the plaintiff, his intervening report could not have been the cause of the demotion. Id. at 358.