A short story from the west side of the Atlantic…..at my company, we have a large cadre of management pilots (no rotation from line to management). Some flight qualified folks worked solely in the training center (Sims). The company decided that after 60 (max FAA 121), they would reduce their salary because of their diminished status (not 121 flight qualified after 60).
A group of them got together, went before the EEOC (Equal Employment Opportunity Commission), and said their job and responsibilities did not change. The commission agreed and they are receiving previous pay grade.
And yes, the company then closed the door on this particular management position/description. It is now a rotation position (Ops/Standards/Training/etc.).