I've seen it in France, because there are two types of contracts here - week (you get paid for 35h/week or up to 39h/week with bonus time off to compensate for

I've seen it in France, because there are two types of contracts here - week (you get paid for 35h/week or up to 39h/week with bonus time off to compensate for the extra up to 4h on top of the "maximum" legal 35h) or day, where you get paid for 200-something work days in the year, regardless of hours worked (2 or 10, as long as the work is done and the maximum work hours in a day/week/month and the minimum rest periods are followed, all is good), which comes with a slightly different tax regime, more days off to compensate for the higher workload, etc. If you're on the first type of contract (as I was at my previous job), you have to keep track of your hours, you get overtime, etc.