The legal minimum in NL is (the equivalent of) four weeks per year (20 days on a 40 hours/week contract), so not that much more than US. Some fields (healthcare, construction, education) get more than that.

However, none of that can be usurped by your employer for other things than vacation. For example, your employer isn't allowed to deduct pay or withhold vacation hours for doctor's visits during work hours. Major life events, like funerals or child births are paid leave. And for most professions, there's no such things as unpaid overtime: you work more hours, you either get more pay or receive more vacation hours.