> The big difference between knowledge workers and everyone else is what individuals and workers as a group will put up with.
There are exceptions, such as in Finland [1]
> Overtime work is allowed in Finland, and represents any work done extra the maximum regular working hours, to a maximum of 138 hours in a 4 months period and a total of 250 hours per a calendar year.
[1] http://www.workinfinland.com/what-are-the-normal-working-hou...