I've heard first hand about this happening in Denmark on a large scale as well. It's hard not believing the government knows about this but does nothing. I wouldn't call it slavery in this case because people come by buses from Poland and go back home after the work is done. They have their freedom of movement. It's just the origin countries are so much worse than the ones where they go to work
It's usually not even that they are so much worse. It's just that the monetary value differences make up the difference. These people can live a much better life in Poland with a Denmark subsistence wage, then they can in Poland with the minimum wage. So they sacrifice some months of their lives living in worse conditions in order to make some money for back home, where they can use that money to improve the lot of their children.
