[Twirrim]

My team has got used to me politely grumbling at them if I catch them working out of hours or while on vacation. At the very least, if they do that I strongly encourage them not to submit code reviews or other more visible actions.

Managers in the chain start bugging people about taking time off as soon as extra hours are worked. Setting the culture for the team early on, _and_ enforcing it, is critical. Luckily I've been there since the team was formed, and have enough seniority that people listen.

That said, there are co-workers that just won't stop working all hours, but they've at least stopped pushing code reviews etc at all hours of the day.