This is interesting. I work for a Swiss company with an office in SV. We often joke about our European employees and their work-life balance.

Well, I ended up working with a team in Switzerland and holy crap, they work hard! Emails coming in at all hours of the night, meetings that go well past dinner time.

I didn't notice any difference in work life balance. Our office has the same vacation policy as HQ, so even that was the same.