Care to elaborate? Unions function differently in different EU states: In the UK they were pretty much killed, in France they act as antagonists to the business side, in Germany they act more collaboratively with the business side.

In the latter case in Germany every large enough commpany has to have a democratically elected workers council, that gets a seat on the board. While not the same as co-ownership, this democratic co-determination is arguably one of the more important reasons why labor relations in Germany are much better than in other European countries.