I worked in the Netherlands. They had a 36 work week and asked me how I preferred to arrange those hours. I said: divide it by five please. Apparently I was the first person in their history (3k people work there! 100 years old institution) who asked for that! Everyone took either a day every two weeks off or worked 4x9hrs. A day every week or two is nice, of course, but I generally really like short days better! Doesn't leave me that exhausted and leaves a bit of time for things every day.