Should you "have to" do extra work? No. Are you going to in most situations. Yes.

It's kind of the nature of the beast. If you have tasks that have to get completed, some of them can get shared out to co-workers, but not all of them. That's just how it goes.

However, I take my vacations. Like so many others here, I've realized my focus is working in orderr to live, not living in order to work.