I wouldn't start too much speculation around a comment that started with 'probably'. But in any case, I'm also a Finn, and my contract also refers to that agreement. Still, I don't think I even know anyone who just drops what they're doing when their hours are up for the day or the week. It seems that everyone's working around the clock, even on weekends and holidays. And just like you would expect by now, people take pride in it and boast about it too. Sure, that's pathological, but I really can't even imagine working 9 to 5 and then disconnecting for the rest of the time, union or not. I think you're considered exceptional in Finnish IT if you can do that.