Some effective trade unions that trained people in apprenticeship programs and try to keep the riff raff out. I used to hire out of the union hall sometimes back when I was restoring houses, depending on the level of work required. Granted this was Florida, and there wasn't any sitting around waiting for hours on union B to move something for union A.
The government unions aren't like that. A bureaucrats primary function is empire building. A unions prime activity is to add members to it's rolls to increase profits for the union leadership. That makes negotiations between the two incestuous, and worse because government spending is so politically manipulated that it bloats beyond what it needs to do regardless of the economy.
FDR opposed government unions. Whatever else, his reasoning for why was sound. What say you DUmmies? FDR is in your pantheon of gods, why do you disagree with him?