I would agree with their sentiment. I don't know how common it would be, but it would certainly happen at least in some occasions.
When I was young, I worked in a call center in which the bathroom was taken away as a punishment for bad rates on multiple occasions, until someone called the Dept. of Labor over it.
They're are some extremely callous assholes out there running businesses (as there are in every walk of life) so it doesn't take much effort to find stories of terrible employers taking advantage of underinformed employees. Why would this particular item be any different?
Some infamous billionaire wanted to build mega-dorms for universities without windows. Yeah, these billionaire fucks will cut corners wherever they can.