Earlier quoted context omitted.
Sounds like the employees should go to court, then.
It sounds like the employees are foreigners who are probably unfamiliar with the polish legal system, with no income or health insurance as more pressing issues.
I would be a little surprised if this was true. One of the big reasons for Western European companies to hire in Poland is because Eastern European countries are very cheap.
For most Western European companies, Polish people _are_ the foreigners (along with all the unfair preconceptions and prejudices that comes with that).