PEO - What are the stats? Industry statistics.
  • The 3.7 million Worksite Employees employed by PEOs earned a total of $176 billion.
  • They represent 15 percent of all employment by private sector employers that have 10 to 99 employees (chosen because this is the size range of most PEO clients) and 2.4 percent of civilian employment in the United States.
  • Between 2008 and 2017, the number of worksite employees employed in the PEO industry grew at a compounded annual rate of 8.3 percent. This is roughly 14 times higher than the compounded annual growth rate of employment in the economy overall during the same period.
  • The total employment represented by the PEO industry is roughly the same as the combined number of employees for Walmart (United States only), Amazon, IBM, FedEx, Starbucks, AT&T, Wells Fargo, Apple, and Google. Those companies include the two largest retailers, the largest technology company, the largest transportation company, the largest telecommunications provider, the largest financial services firm, the largest specialty restaurant chain, plus the two most highly valued firms in the world based on stock market valuation.
Key Findings
  • Businesses in a PEO arrangement grow 7-9 percent faster, have 10-14 percent lower turnover, and are 50 percent less likely to go out of business.
  • PEOs are able to offer a broad array of HR services at a lower cost, and offer access to retirement plans to small businesses that may not otherwise sponsor them.
  • PEOs provide services to 175,000 small and mid-sized businesses, employing 3.7 million people.
  • There are 907 PEOs in the U.S.
  • Administrative costs are around $450 lower per employee for businesses that use a PEO.
What is Co-Emplyment

The PEO relationship involves a contractual allocation and sharing of certain employer responsibilities between the PEO and the client, as delineated in a contract typically called a client service agreement (CSA).

For the obligations a PEO agrees to take on with respect to its clients, the PEO assumes specific employer rights, responsibilities, and risks through the establishment and maintenance of a relationship with the workers of the client. More specifically, a PEO establishes a contractual relationship with its clients whereby the PEO:

  • May assume certain employment responsibilities for specified purposes regarding the workers at the client locations.

  • May reserve a right of direction and control of the employees with respect to particular matters.
  • Shares or allocates employment responsibilities with the client in a manner consistent with the client maintaining its responsibility for its product or service.
  • Remits wages and withholdings of the client’s workers.
  • Issues Form W-2s for the compensation paid under its Employer Identification Number.
  • Reports, collects and deposits employment taxes with local, state and federal authorities.


A PEO provides integrated services to effectively manage critical human resource responsibilities and employer risks for clients. A PEO delivers these services by establishing relationships with the client’s employees and administering certain employer rights, responsibilities, and risks as agreed with the client.


The roles of the PEO and the client depend upon the facts and circumstances of each relationship — that is, each obligation should be examined individually as employment responsibilities are assigned in the parties’ CSA.  Each party will be responsible for certain obligations of employment, while both parties might share responsibility for other obligations and be “an” employer, but neither party is “the” employer for all purposes.


Both the PEO and the client company establish a relationship with worksite employees. The PEO might engage with worksite employees with respect to specific matters involving human resource management and compliance with employment requirements, while the client company directs and controls worksite employees in the client’s day-to-day operations as well as the manufacturing, production, and delivery of its products and services.


The client company provides worksite employees with the tools, instruments, and places to work. Some PEOs provide assistance and suggestions to clients when it comes to offering worksite employees a workplace that is safe, conducive to productivity and operated with best practices with employment rules and regulations.  Additionally, the PEO assists clients and worksite employees with workers’ compensation insurance and a broad range of employee benefits programs.


PEOs create a real relationship with worksite employees over certain matters. This relationship exists in fact, not just in form. PEOs often assist with the risks attendant to the personnel functions of the worksite employees. PEOs manage liabilities by monitoring new employment trends and requirements and developing policies and procedures for their clients and the worksite employees, as stated in the client service agreement.  

*information provided by NAPEO An Economic Analysis: The PEO Industry Footprint in 2018 Whitepaper.

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