If you count the "part time employed for non-economic reasons", you get 126.8 million Americans who are unemployed, underemployed, working part time or "Not in the labor force".
That represents 53% of working age Americans. So only 47% of working age Americans have full time jobs. While the official unemployment rate is 9.4%. Something's missing somewhere.
http://theautomaticearth.blogspot.com/2011/01/january-23-2011-only-47-of-working-age.html