INSIGHT - 2010 list of largest U.S. industrial staffing firms
*19 firms break $100 million barrier, make up 53% of market
*As last year, Manpower is largest, TrueBlue a close second
*Westaff acquisition moves Select to third

INSIGHT - 2010 list of largest U.S. F&A staffing firms
*13 firms break $50m barrier, making up 48% of market
*Robert Half is largest with 18% market share
*Only three firms on the list have F&A as their largest segment

INSIGHT - 2010 list of largest U.S. engineering staffing firms
*17 firms break $50 million barrier, down from 21 last year
*MPS acquisition makes Adecco largest in engineering
*Adecco and Allegis make up 22% of market

INSIGHT - 2010 list of largest U.S. clinical/scientific staffing firms
*Market size estimates of clinical/scientific revised
*12 firms break $25 million barrier in 2009, combined revenue over $1 billion
*Allegis and Kelly make up 29% of market 
 
INSIGHT - 2010 list of largest U.S. PEO firms
*Administaff reports highest net revenue, ADP is largest based on gross revenue and worksite employees
*Administaff and ADP make up 30% of market
*We estimate 20 firms broke $25 million barrier in net revenue