Best PEO Companies in Illinois
Compare Professional Employer Organizations serving Illinois businesses. Editorial ratings are independent — featured placements are paid visibility, not endorsements.
PEO Companies Serving Illinois
Justworks
New York, NY · Est. 2012
Insperity
Kingwood, TX · Est. 1986
TriNet
Dublin, CA · Est. 1988
ADP TotalSource
IRS CPEO ✓NationwideHQ: Roseland, NJ · Est. 1996
ADP TotalSource is the Professional Employer Organization division of ADP (NASDAQ: ADP), one of the world's largest payroll and HR companies with over 75 years of history and more than 1.1 million clients across 140+ cou…
CoAdvantage
IRS CPEO ✓NationwideHQ: Tampa, FL · Est. 1996
CoAdvantage is a Bradenton, Florida-based Professional Employer Organization founded in 1997.
Infiniti HR
NationwideHQ: Rockville, MD · Est. 2008
Infiniti HR is a Burtonsville, Maryland-based IRS CPEO certified Professional Employer Organization founded in 2004.
G&A Partners
IRS CPEO ✓RegionalHQ: Houston, TX · Est. 1995
G&A Partners is a Houston, Texas-based Professional Employer Organization founded in 1995 by Antonio Grijalva and John Allen.
FrankCrum
NationwideHQ: Clearwater, FL · Est. 1981
A family-owned PEO based in Florida serving businesses nationwide with 2-500 employees. FrankCrum is one of the few PEOs with its own insurance company, enabling highly competitive workers comp rates.
PrestigePEO
IRS CPEO ✓NationwideHQ: Melville, NY · Est. 1998
PrestigePEO is a national Professional Employer Organization headquartered in Melville, New York, serving small and mid-sized businesses across all 50 states since 1998.
PrimePoint
RegionalHQ: St. Louis, MO · Est. 2000
A St. Louis-based PEO serving the Heartland region. PrimePoint combines technology-driven payroll with hands-on HR support for growing businesses.
Employers Edge
IRS CPEO ✓RegionalHQ: Chicago, IL · Est. 1999
A Chicago-based PEO serving the greater Illinois and Midwest region. Employers Edge is known for its deep expertise in Illinois employment law and strong benefit partnerships.
Amplify HR Management
IRS CPEO ✓RegionalHQ: Northbrook, IL · Est. 2015
Amplify HR is an IRS CPEO certified and ESAC accredited Professional Employer Organization recognized by Forbes as a leader in HR solutions.
Human Capital Concepts
IRS CPEO ✓RegionalHQ: Indianapolis, IN · Est. 2005
Human Capital Concepts (HCC) is an Indianapolis, Indiana-based IRS CPEO certified Professional Employer Organization founded in 2007 by Steve Kellam.
The Employer Advantage
IRS CPEO ✓RegionalHQ: Joplin, MO · Est. 2010
A Joplin-based CPEO serving businesses across the four-state region. The Employer Advantage is known for personalized service and strong local relationships across Missouri and neighboring states.
WorkSmart Systems
IRS CPEO ✓RegionalHQ: Indianapolis, IN · Est. 1994
WorkSmart Systems is an Indianapolis, Indiana-based IRS CPEO certified Professional Employer Organization founded in 1988.
IntelliPro
IRS CPEO ✓NationwideHQ: San Jose, CA · Est. 2009
IntelliPro is an IRS-certified PEO headquartered in San Jose, California, specializing in HR outsourcing, payroll administration, and employee benefits management for technology companies and professional services firms…
Staff Management
IRS CPEO ✓RegionalHQ: Rockford, IL · Est. 2000
Staff Management is an IRS-certified Professional Employer Organization based in Rockford, Illinois, offering comprehensive PEO services including payroll processing, employee benefits, HR administration, and compliance…
Paychex PEO
IRS CPEO ✓NationwideHQ: Rochester, NY · Est. 1971
Paychex PEO is the co-employment division of Paychex (NASDAQ: PAYX), one of the largest HR and payroll companies in the United States with over 50 years of experience serving American businesses.
BBSI
NationwideHQ: Vancouver, WA · Est. 1965
Barrett Business Services, Inc. (BBSI) is a publicly traded (NASDAQ: BBSI) Professional Employer Organization headquartered in Vancouver, Washington.
Adams Keegan
IRS CPEO ✓NationwideHQ: Memphis, TN · Est. 1987
Adams Keegan is a Memphis, Tennessee-based PEO offering both co-employment (PEO) and administrative services organization (ASO) models.
Deel PEO
NationwideHQ: San Francisco, CA · Est. 2019
Deel PEO is the domestic U.S. co-employment offering from Deel, a San Francisco-based global HR and payroll platform founded in 2019 and valued at $16.8 billion following a $450 million Series G in May 2025.
AlphaStaff
NationwideHQ: Sunrise, FL · Est. 1997
AlphaStaff is a Sunrise, Florida-based Professional Employer Organization founded in 1997 and ESAC accredited.
Vensure Employer Services
NationwideHQ: Chandler, AZ · Est. 2004
Vensure Employer Services is one of the largest privately held PEOs in the United States, headquartered in Chandler, Arizona, and founded in 2004.
America's Back Office
IRS CPEO ✓NationwideHQ: Chandler, AZ · Est. 2000
America's Back Office is an IRS CPEO certified and ESAC accredited PEO headquartered in Chandler, Arizona, providing comprehensive HR outsourcing services to small and mid-sized businesses across the United States.
Avitus Group
NationwideHQ: Billings, MT · Est. 1994
Avitus Group is a Billings, Montana-based PEO and HR outsourcing company founded in 1994, providing payroll processing, employee benefits, workers' compensation, and HR services to businesses nationwide.
Tandem HR
RegionalHQ: Burr Ridge, IL · Est. 1998
Tandem HR is a Burr Ridge, Illinois-based PEO founded in 1998, providing payroll, benefits administration, HR support, workers' compensation, and compliance services to small and mid-sized businesses.
Modern Business Associates
NationwideHQ: Tampa, FL · Est. 1990
Modern Business Associates (MBA) is a Tampa, Florida-based PEO founded in 1990, providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance s…
QTI Human Resources
RegionalHQ: Madison, WI · Est. 1957
QTI Human Resources is a Madison, Wisconsin-based HR services company founded in 1957, offering PEO and HR outsourcing solutions to businesses primarily across the Midwest.
Employco USA
RegionalHQ: Westmont, IL · Est. 1997
Employco USA is a Westmont, Illinois-based PEO founded in 1997, providing payroll administration, employee benefits, HR outsourcing, workers' compensation, and compliance services to small and mid-sized businesses.
Cornerstone Employer Solutions
RegionalHQ: St. Louis, MO · Est. 2002
Cornerstone Employer Solutions is a St. Louis, Missouri-based PEO providing co-employment services including payroll processing, employee benefits administration, HR outsourcing, workers' compensation, and compliance sup…
Dynamic HR Services
RegionalHQ: Auburn Hills, MI · Est. 2000
Dynamic HR Services is an Auburn Hills, Michigan-based PEO providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance support to businesses…
Connectify HR
RegionalHQ: West Des Moines, IA · Est. 2010
Connectify HR is a West Des Moines, Iowa-based PEO providing co-employment services including payroll, employee benefits, HR administration, and compliance support to small and mid-sized businesses across the Midwest.
Employee Management Services
RegionalHQ: Cincinnati, OH · Est. 1993
Employee Management Services (EMS) is a Cincinnati, Ohio-based PEO founded in 1993, providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and complian…
Vincera HR
RegionalHQ: Troy, MI · Est. 2005
Vincera HR is a Troy, Michigan-based PEO providing payroll processing, employee benefits, HR outsourcing, and compliance services to small and mid-sized businesses across the Midwest and select markets nationally.
Proservice National
NationwideHQ: Honolulu, HI · Est. 2010
Proservice National is the mainland U.S. PEO extension of ProService Hawaii, providing co-employment services including payroll, benefits, HR administration, and compliance support to businesses across the continental Un…
Questco
NationwideHQ: The Woodlands, TX · Est. 2002
Questco is a national PEO headquartered in The Woodlands, Texas, providing comprehensive co-employment services to businesses across the United States.
Regis HR Group
NationwideHQ: Tampa, FL · Est. 2002
Regis HR Group is a Tampa, Florida-based national PEO providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance support to businesses acros…
Stratus HR
NationwideHQ: South Jordan, UT · Est. 2003
Stratus HR is a South Jordan, Utah-based PEO (operating as ISI HR) providing comprehensive co-employment services to small and mid-sized businesses nationwide.
INVO PEO
NationwideHQ: Tampa, FL · Est. 2010
INVO PEO is a Tampa, Florida-based Professional Employer Organization providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance support to…
Shift Human Capital Management
RegionalHQ: Chicago, IL · Est. 2012
Shift Human Capital Management is a Chicago, Illinois-based PEO providing payroll, employee benefits, HR outsourcing, and compliance services to growing businesses across the Midwest and nationally.
SinglePoint Outsourcing
NationwideHQ: Scottsdale, AZ · Est. 2007
SinglePoint Outsourcing is a Scottsdale, Arizona-based PEO providing national co-employment services including payroll, employee benefits, HR administration, and compliance support to small and mid-sized businesses acros…
Sequent
RegionalHQ: Columbus, OH · Est. 1997
Sequent is a Columbus, Ohio-based PEO providing co-employment services including payroll processing, employee benefits administration, HR outsourcing, and compliance support to businesses across the Midwest and Mid-Atlan…
NetPEO
NationwideHQ: Atlanta, GA · Est. 2009
NetPEO is an Atlanta, Georgia-based PEO broker and provider offering co-employment services and PEO matching to businesses nationwide.
IronRoad
RegionalHQ: Des Moines, IA · Est. 2011
IronRoad is a Des Moines, Iowa-based PEO providing payroll, employee benefits, HR administration, and compliance services to small and mid-sized businesses across the Midwest.
TEL Staffing & HR
RegionalHQ: Pensacola, FL · Est. 2000
TEL Staffing & HR is a Pensacola, Florida-based PEO founded in 2000, reporting over $637 million in annual revenue and serving businesses across 16 states.
PrimePay
NationwideHQ: West Chester, PA · Est. 1986
PrimePay is a West Chester, Pennsylvania-based payroll and PEO services company founded in 1986, providing co-employment services and payroll administration to small and mid-sized businesses nationwide.
Employco Resources
RegionalHQ: Westmont, IL · Est. 1997
Employco Resources is a Westmont, Illinois-based PEO founded in 1997, providing payroll, employee benefits, HR outsourcing, workers' compensation, and compliance services to small and mid-sized businesses with a focus on…
MidwestHR
IRS CPEO ✓RegionalHQ: Woodridge, IL · Est. 1997
MidwestHR is a Woodridge, Illinois-based IRS-certified PEO founded in 1997, serving startups and small businesses with HR outsourcing, payroll processing, employee benefits administration, and workers' compensation.
Sheakley HR
RegionalHQ: Cincinnati, OH · Est. 1963
Sheakley HR is a Cincinnati, Ohio-based PEO and HR services company founded in 1963, offering a full-service co-employment model alongside HR consulting, employee benefits, payroll, workers' compensation, and workplace s…
AHEAD HR
RegionalHQ: Lisle, IL · Est. 1995
AHEAD HR is a Lisle, Illinois-based PEO founded in 1995 by William and Andrea Bellis.
Employer Advantage
IRS CPEO ✓RegionalHQ: Joplin, MO · Est. 1995
Employer Advantage is a Joplin, Missouri-based IRS CPEO certified PEO providing co-employment services to businesses across the Midwest and South Central United States.
Prism HR
NationwideHQ: Hopkinton, MA · Est. 1996
PrismHR is a Hopkinton, Massachusetts-based HR technology platform and PEO services provider founded in 1996.
Choosing a PEO in Illinois
Illinois has a robust set of employee protections that go well beyond federal minimums, making it one of the more complex compliance environments in the Midwest. The state minimum wage is $15.00 per hour as of 2026. Chicago sets its own minimum wage above the state rate, so employers with employees in Chicago must verify the current Chicago rate and comply with whichever is higher. Illinois requires employers to post salary ranges in job postings when hiring, making pay transparency compliance a day-one concern for growing businesses.
The Illinois Paid Leave for All Workers Act — effective January 2024 — requires most Illinois employers to provide employees with up to 40 hours of paid leave per year that can be used for any reason. This is significantly broader than a typical sick leave law and requires careful policy design and tracking. Illinois also follows the federal WARN Act for mass layoff notifications, requiring 60 days advance notice for layoffs affecting 75 or more employees in Illinois.
Illinois is subject to the Biometric Information Privacy Act (BIPA), one of the most significant employer liability laws in the country. BIPA restricts how employers can collect, store, and use biometric data — including fingerprint time clocks and facial recognition systems. BIPA violations carry statutory damages of $1,000 to $5,000 per violation, and the law has generated significant class action litigation. Employers using any biometric timekeeping or access systems must ensure full BIPA compliance.
Illinois is not a right-to-work state, meaning union security agreements are permitted. For businesses in industries with active union presence — including manufacturing, construction, and transportation — HR compliance in Illinois requires careful attention to both state employment law and applicable collective bargaining requirements. A PEO with Illinois expertise can help businesses navigate paid leave administration, BIPA compliance, pay transparency requirements, and the full range of state-specific HR obligations.
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Frequently Asked Questions
What is the minimum wage in Illinois in 2026?
The Illinois statewide minimum wage is $15.00 per hour as of 2026. Chicago sets its own minimum wage above the state rate, which employers must comply with for employees working in the city. Employers with multi-location operations across Illinois must track the applicable minimum wage for each location.
What is the Illinois Paid Leave for All Workers Act?
Effective January 2024, the Illinois Paid Leave for All Workers Act requires most Illinois employers to provide employees with up to 40 hours of paid leave per year that can be used for any reason — not just illness. Employers can frontload the leave at the start of the year or allow it to accrue. The law applies to most private employers and requires careful policy design and tracking.
What is BIPA and how does it affect Illinois employers?
The Illinois Biometric Information Privacy Act (BIPA) restricts how employers collect, store, and use biometric identifiers — including fingerprints, retinal scans, and facial geometry used in timekeeping or access systems. Employers must obtain written consent, maintain a data retention policy, and prohibit sale or profit from biometric data. Violations carry statutory damages of $1,000 to $5,000 per incident, and class action exposure is significant.
Does Illinois require pay transparency in job postings?
Yes. Illinois employers are required to include pay scale and benefits information in job postings when they have 15 or more employees. Chicago has additional pay transparency requirements. A PEO can help businesses design compliant job posting templates and compensation structures that meet both state and local requirements.