Sometimes studios are concerned about breaking rules, labor regulations and laws. And sometimes not.
Two quick stories.
Story the first: Several years back, at a large animation studio making theatrical features, a production manager was exploiting young animators by working them extra hours for no additional pay. (You're shocked, I know.) An employee tipped me off, I went through the facility late one night, asking the animators if they were being paid for their work. To my surprise, several said "No." (Usually I get tight smiles and "Yes, of course.")
I immediately called Labor Relations, and filed a Step One grievance. The lawyer there immediately checked into the problem, found the allegations to be true, and the company paid all the animators' overtime in full.
Story the second: At a different animation house, the studio had lots of personal service contracts that forbade employees "from sharing any information in this agreement." All the contracts were pretty much the same except for wages. I went to a Vice-President in Labor Relations and asked if the prohibition against "sharing information" included the sharing of wage info. He said it did. I told him that employees had the right under law to share salary information with anyone, and that the clause was illegal. He replied:
"Well, as long as nobody takes us to court over it, we're okay. We're keeping it in."
I kept complaining about the clause. Eventually a corporate lawyer agreed to take the language out of the contracts. But for years afterward, human resource people informed employees in contract meetings that the company didn't want them sharing wage information.
In the years I've been doing this, a recurring corporate strategy is "plausible deniability." Employees might be in their cubes working at ten at night, but managers mostly claim to have no idea that uncompensated o.t. is going on. (My problem: I can go through a facility late at night and find artists at their desks -- as happened two weeks ago -- but if everyone tells me they're receiving o.t., I have to assume I'm being told the truth ... even if I suspect otherwise.)
Unenforced laws and regulations are like no laws and regulations. Strange how that works.