In the past 20 years, the US economy has grown nearly 60 percent. This huge increase in productivity is partly due to automation, the internet, and other improvements in efficiency. But it's also the result of Americans working harder—often without a big boost to their bottom lines. Oh, and meanwhile, corporate profits are up 20 percent.

Read more at http://www.motherjones.com/politics/2011/06/speedup-americans-working-harder-charts