From BLS
Biggest factor would be females not in the labor force. Can you imagine that.. one spouse working was enough to support a family and pay off the mortgage -- it wasn't just in the movies.
Bureau of Labor Statistics
These tables can be obtained here: go to Bureau of Labor Statistics (BLS) Labor Force Statistics from the Current Population Survey (CPS). Requires Java. Make your selections. I asked for quarterly data and took the fourth (or last available) quarter annualized data from each table.
Commenting on the "jobless" recovery an Oct 17th 2003 article in Morgan Stanley's Global Stephen Roach wrote of "Imported Productivity" and "income leakage" vis-à-vis the business cycle recovery (the one starting in late 2001) compared to recoveries of the past.
"The gap between the current cycle and the norm of earlier cycles works out to a shortfall of about $320 billion in real terms, or 4.4% of the current level of real disposable personal income..."Sourcing demand through low-cost, offshore labor input has become an increasingly important tactic to enhance the operating efficiency of US businesses... the American workforce is not sharing the benefits."
Scream "Protectionist!" all you want but huge numbers of jobs going off shore and 24 million foreign workers here should be considered.
Bu that does not let Obama off the hook.
If you are willing to look around a wall of numbers you can see that under Obama the economy is even worse than "the mess Bush left." Though some of the millions of jobs lost while our health care system destruction had priority some of those jobs have been replaced with part-time and temp jobs. Compare current president and past presidents using federal government economic data.