A sane number of hours per week is far below 40. In France, we have a 35 hour work week. I am sure we can (and I think we must) go lower without losing much. Less hours for better hours.
My experience of working for a massive company in france was we had a "35 hour" workweek, which cadres would regularly ignore. They were typically doing 8:30-7pm or 9pm-7pm.
