All this story seems strange to me.
First of all, a man has a 95k salary. Is that per month? Or per year? Or is it his business income? I'm asking it, because if that's his salary per month (I didn't know such salaries exist for hired people), he could invest some of his savings and do a movie himself. People buy cars and houses and pay years for them. He could take a loan of 500k or 1mil. He didn't need to become an intern.
Secondly, he's 40+, isn't he? I understand when people between 20-25 are used for dirty jobs, that have nothing to do with what they're aiming for, but... 40+? Cleaning? And it's not just a man from the street... it's a man with 95k salary, who probably knows his rights! He can't be so naive as the 20-25 aged people!
Finally, when a well known director is employing a man of 40+, who works in a good job and knows his rights... Isn't he afraid to be taken to court, if he's going against the employee's rights? You know, the latter can hire a good lawyer too! And no matter who are you, I believe nobody likes court processes. Moreover, the employee can make a big noise out of it, bring journalists... become a real pain in the butt....
If the story was about a student who was used that way, or an immigrant, that would be believable. It happens. Everywhere. But not with grown up people from high society classes!