I don't think so. The gaffer is told what lighting effect is desired, but they are the one that has control over how it's achieved. Same for the propmaster; the director says, "We need something that does this", and it's up to the propmaster how to achieve that. That industry does also have some pretty strong unions, so I think they'd be ok regarding labor standards.

Just like if you hired someone to paint your fence, you do have control over how you want it (what color, for example), but not necessarily over how it gets done (if they end up tricking a bunch of other painters to do it because they say how fun it is).