Your "superiors" are "management" or the company and they are not your fellow employees.
As it was explained to me, the worker has a job and the supervisor has a position.
If you are management, and your actions have contravened the Collective Bargaining
Agreement the union will lodge a grievance with the company.
Unions are a good thing when both sides stick to their agreements. Unfortunately there
are unconstitutional laws in the U.S. ("Right to Work" laws) which have gutted most
Unions. Funnily enough at the same time wages have gone down. Go figure.