Investor's Business Daily:

In the 30 months since the recession officially ended, nearly 1 million people have dropped out of the labor force — they aren't working, and they aren't looking — according to data from Labor's Bureau of Labor Statistics. In the past two months, the labor force shrank by 170,000.

Unprecedented, Tepid Recovery Under Obama Begs Question: Where Did All The Workers Go? - Investors.com