New York Times (04/14/12) Alexandra Levit
Around 31% of the U.S. work force is independent or contingent,
including temporary workers, contractors, and the self-employed,
according to a 2006 government report. Contingent workers were
favored by employers during the recent recession because hiring
them helped hold down costs, and they are not likely to go away
given that employers remain hesitant to hire permanent
employees.