Hmmm... as I understand the situation, at least in france, the "shorter hours" and "more leisure" are not really a choice, but they have been forced on the population in an attempt to boost the number of workers businesses have to employ. Their continually worstening unemployment problem both in france and germany, as well as many of the other EU countries is testament this is not the solution, but they continue to ignore the real problem: socialism.
Under French law no one can work more than 35 hours per week. That includes management.