Staffing Firm Lists & Market Share

Largest Industrial Staffing Firms in the US: 2019 Update

August 23, 2019

  • Report ranks 47 firms that generated at least $100 million in US industrial temporary staffing revenue last year
  • The three largest companies are EmployBridge Holding Company, Express Employment Professionals, and Aerotek (Allegis Group)
  • Added together, the 47 firms generated $26.8 billion in... More

Largest IT Staffing Firms in the US: 2019 Update

August 21, 2019

  • Report ranks 50 IT staffing firms that generated $100 million or more in US IT temporary staffing revenue last year.
  • The three largest companies are TEKsystems (Allegis Group), ASGN and Insight Global.
  • Added together, these 50 firms generated $20.8 billion in such revenue.

Largest Retained Search Firms in the US: 2019 Update

August 16, 2019

  • Report ranks 13 firms that generated at least $25 million in retained search revenue last year
  • The three largest companies are Korn Ferry, Heidrick & Struggles, and Spencer Stuart
  • The 13 firms generated a combined $2.0 billion in retained search revenue

Largest Staffing Firms in the United States: 2019 Update

July 27, 2019

  • This report highlights 157 staffing companies that generated at least $100 million in US staffing revenue
  • Added together, the companies generated $90.3 billion in US staffing revenue last year, or 61.0% of the market
  • Report includes estimated 2018 staffing revenue, market share, largest skill... More

Largest Direct Hire Firms Globally

June 26, 2019

  • SIA's estimate for the size of the global direct hire market, broken down by region and country
  • Ranking of the largest direct hire firms, based on 2018 revenues
  • Insights from publicly listed firms

Largest Clinical/Scientific Staffing Firms Globally

December 5, 2018

  • Global market size estimate and regional breakdown
  • Top 25 ranking based on market share
  • Clinical trials registrations geographical trends

Engineering Growth Assessment Globally

November 26, 2018

  • This report provides an in-depth look at the engineering staffing segment
  • Describes drivers of growth and relevant employment trends
  • Contains demographic statistics and M&A data

Largest and Fastest-Growing Staffing Firms in the US: Late Additions and Updates 2018

October 31, 2018

  • Contains new and/or updated information regarding nine staffing firms
  • Addendum to our previously published reports on the Largest and Fastest-Growing Staffing Firms in the US

Staffing Firm Market Share Landscape and Book of Lists 2018 - The Americas

October 16, 2018

  • Compilation of staffing firm market share landscape reports and opportunity lists
  • Includes ranking of largest staffing firms by skill segment in the US
  • Includes reports on fastest-growing staffing firms and staffing firms interested in making an acquisition

Largest Global Staffing Firms 2018

October 9, 2018

  • Lists the 100 largest global staffing firms.
  • How they break down by market share and geography.
  • Shows who has joined the list and who has left.