Obviously, I wouldn't call this slavery. But in terms of the effect on the employees, it's __in some ways__ getting close. Do we have a word for this type of relationship between worker and company? There's something wrong when we (at least in the USA) are said to be approaching but workers (albeit in the UK) can't stop to pee. All this at the hands of the richest man in the world?
Exploitation of labour. https://en.wikipedia.org/wiki/Exploitation_of_labour