In some countries (namely Portugal and France) you are not allowed to be contacted by your employer out of office hours, so that you can get that disconnect.
At the same time, children are targeted to be constantly "on" and "engaged", and we seem to be OK with that.
The general agreement for the IT services sector in Finland says that we're entitled to an hour's wage if we need to take phone calls outside working/on-call time. Two hours for 21-06, Sundays and holidays. Granted, it's one of those clauses that can be negotiated down in one's contract.
At the same time, children are targeted to be constantly "on" and "engaged", and we seem to be OK with that.