> I am happy that this is the case but am also disappointed that the remaining 20% are almost entirely the "burn the candle at both ends" segment of our group and they're forever replying to threads and the like even when off work on weekend or vacation.

Really? Off work is off work.

The moment I step out the building door, work is done, finished.

Want to talk with me? Wait for the following day I am at work.

There is nothing the employer can do about it unless it specifically states it on the work contract, most European countries have laws about being contacted after work.