It's a private company. If they only want to hire Polish speakers they can. If they only wanted to hire trapeze artists that can juggle chainsaws they could. Although I can't see them being very productive.
The only priority should be skills and I'd rather a hard working Polish immigrant get the job than a lazy native. But at the end of the day companies will do whatever they can to make money.
The only priority should be skills and I'd rather a hard working Polish immigrant get the job than a lazy native. But at the end of the day companies will do whatever they can to make money.