Poor, desperate people who don't speak the local language are not exactly likely to turn whistleblower. We've seen this in the UK recently with the Covid-19 out

Poor, desperate people who don't speak the local language are not exactly likely to turn whistleblower. We've seen this in the UK recently with the Covid-19 outbreaks on vegetable farms - which are (as Brexit opponents in the press repeatedly and smugly pointed out) almost entirely staffed by migrant workers from Eastern Europe to the point that when Covid shut down travel they had to charter special planes to fly them in - when the people who went to the press about the dodgy hygene conditions were the only British workers. There's a reason these companies prefer migrant workers, and it's not a good one.