> is it possible that adversarial relationship might exist even without a union but it would just be hidden?
It wouldn't happen in other countries because the US has a uniquely adversarial union structure, where Europe uses codetermination (ICs with board seats) and sectoral bargaining (don't have to convert one company at a time).
It wouldn't happen in other countries because the US has a uniquely adversarial union structure, where Europe uses codetermination (ICs with board seats) and sectoral bargaining (don't have to convert one company at a time).