Second measuring the hours worked is tricky, because not all the real hours worked are recorded and overtime is not taken into account in some countries.
And only the hours worked per year make sense, because you have a wide spectrum of working time schemes, some of them making people work 50 hours a week in summer and 20 in winter, or any other combination (and, believe me, there are many of them!). "Dieu se rit des hommes qui se plaignent des conséquences alors qu'ils en chérissent les causes" Jacques-Bénigne Bossuet
From the plutocratic point of view the useful measures are:
The irony is that disposable income and leisure time are two of the biggest drivers of individual spending, and an economy which is strong in both has a good chance of being strong in more traditional ways.
