In "europe" a two week vacation (10 work days) is common/standard. As opposed to American's "long weekends."
To that point, if you've ever wondered (as I have) about the differences in philosophy on the topic of vacation between America and Europe, you may enjoy this paper [1]. It attempts to examine those differences. It's entitled "Europeans Work To Live and Americans Live To Work (Who is Happy to Work More: Americans or Europeans?)."
Interesting paragraph: "This is the first study to test empirically whether working more makes Americans happier than Europeans. This study suggests that as the number of work hours increases, Americans become happier about life than Europeans. The purpose of this study was to document this relationship. More research is needed to find out why working more makes Americans happier than Europeans. I just note here one possible explanation: Americans may work more because they believe more than Europeans do that hard work brings success."
I'm American, and I love taking time away to recharge. I'm fortunate enough to be able to completely break away and unplug. I don't work while I'm on vacation, and I don't check email either. Again, I'm quite fortunate, as I know a lot of people simply can't do that for various reasons. I do wish our culture placed more emphasis on the importance of down-time. It just makes so much intuitive sense to me, and my personal productivity seems to corroborate the intuitive feeling that I have about the topic.
[1] http://people.hmdc.harvard.edu/~akozaryn/myweb/docs/final_wo...
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Edit: Here is another interesting article on the topic. "Reluctant Vacationers: Why Americans Work More, Relax Less, than Europeans"
http://knowledge.wharton.upenn.edu/article/reluctant-vacatio...