From Calculated Risk:
According to the BLS, there are almost 4.4 million workers who have been unemployed for more than 26 weeks (and still want a job). This is 2.8% of the civilian workforce.
Right now very few workers have exhausted their unemployment benefits, but there is tidal wave coming. The Law Project estimates 0.5 million workers will have exhausted their extended benefits by the end of September, and close to 1.5 million by the end of 2009. Unless the unemployment rate starts to decline, the numbers will continue to grow rapidly in 2010.