Yes, but why?

An interesting observation from Tyler Cowen over at Marginal Revolution:

Nearly a quarter of South Korean men over 75 are still in the labor force, as are 14 percent of Japanese men. In the United States, a 10th of such men are working or seeking work, compared with half of 1 percent in France.

Put another way, a Korean man over 75 is more likely to be working than a Frenchman in his early 60s.

Is this good or bad? And what does government social benefit systems have to do with it? More discussion here.