I'm a janitor in a union. The union grants me seniority rights and that means I can choose my assignments. I don't have to clean restrooms unless I feel like chasing tips. All the dirtiest work is left up to people way down in the seniority chain. Also, if I have a beef with a manager, I can be heard in a grievance hearing. I mean, how many times in the last six years has somebody in management tried to pull my summer vacation out from under me? I win that vacation every time when taking such cases to the union. Management can win, but since most of them refuse to follow procedures, they're sunk.