U.S. Workers Are Most Productive - Is That A Good Thing?

The Associated Press reports that U.S. Workers are the most productive in world; Each Produces $63,885 of Wealth Per Year...

American workers stay longer in the office, at the factory or on the farm than their counterparts in Europe and most other rich nations, and they produce more per person over the year. They also get more done per hour than everyone but the Norwegians, according to a U.N. report released Monday, which said the United States 'leads the world in labor productivity.' The average U.S. worker produces $63,885 of wealth per year, more than their counterparts in all other countries, the International Labor Organization said in its report.

We may be more productive, but how does that compare to our health? What is the projected life span of employees in other nations and how does the work/life balance compare to that of Americans? How does that also translate to happiness? I know it's a bit hypocrital of me, since I rather not sleep and do something more productive. I do however realize a need to balance life away from just labor.