Over at Demos, Matt Bruenig came up with a clever way of thinking about this. In general, as countries become richer and more productive, they work less and less, since they can produce more with the same effort. Plot hours worked per person versus GDP per hour worked, and you can produce a trend line. Those above the line work unusually hard, while those under it do the opposite.

So who works the hardest, controlling for relative wealth? Americans, by far…