So if a bulb burns out in your work area and the "electrician" is on his coffee break (or there isn't one on site), you're SOL?
That is exactly it. If you're working in a union shop, and the bulb illuminates your work
area, you are obligated to stop work until an electrician can be dispatched to replace the
burned out bulb. Screwing in a new bulb requires a skilled tradesman. And if there's a loose
screw coming out of your machine, you stop work until a mechanic can be dispatched.
You are never permitted to tighten a loose screw. And if there's dirt on the floor and a broom
in the corner, you have to call for a janitor. And on and on.
Those are just a few minor irritations in a union shop.