The data displays the market share of the biggest staffing firms in the U.S. in 2017. In that year, Allegis Group was the biggest staffing firm in the United States with a market share of 6.7%.
Allegis Group | 6.7 |
Randstad Holding | 3.3 |
Adecco | 3.2 |
Kelly Services | 2.5 |
Robert Half International | 2.4 |