And I think the general first-world deviation isn't that big either, apart from the Koreans (and to a minor degree, Americans).
We do still manage to have a pretty good economic output and some business success stories though, so there might be something to be said for working fewer hours.
It probably varies a lot depending on company culture. A friend working at a startup recently got hi-5's from the bosses when he said he had worked 11 hours a day the entire previous week, no talk about taking compensation leave to rest or anything like that. At my company (not a startup) an 11 hour day would be pretty extreme, and if my boss was aware he would probably insist I come in late the following day.
From my personal experience I can say these guidelines are not strictly adhered. The young, university educated people I hang out with all work more then 40 hours and take about 20 vacation days and work 40-60 hours, more if necessary.
However I think direct comparison is pretty hard. What does count towards the total amount worked? For example including social drinks in their total biasing the amount upwards.
"Nanny-Culture, Lack of Risk Taking, Not Sharing What makes Finland such a wonderful place to live and raise a family may ultimately be what kills it as a startup hub."
So e.g. 2 week vacation == 10 work days off.