Yup, these companies could always just hire outright
It is the same with undocumented workers. Would it better if they were deported than to be denied benefits afforded to citizens?
Yes, it would be better if they hired no-one. When your job conditions are beneath human dignity, you don't get to hire people for that job, even if that means your stock price doesn't grow quite as much and GDP is lower this year.
Realistically in the US the distinction is mainly about whether you have medical coverage. Plenty of people work with no or bad medical coverage because they are some combination of optimistic/greedy/desperate; to assess how humane that is you'd have to look at how they feel about it after getting diagnosed with something that they struggle to get decent treatment for because they weren't an employee.