Best PEO Companies in Missouri
Compare Professional Employer Organizations serving Missouri businesses. Editorial ratings are independent — featured placements are paid visibility, not endorsements.
PEO Companies Serving Missouri
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.
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.
Axcet HR Solutions
RegionalHQ: Shawnee, KS · Est. 1988
Axcet HR Solutions is an Overland Park, Kansas-based IRS CPEO certified Professional Employer Organization serving businesses primarily in Kansas, Missouri, and the greater Kansas City metro area.
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.
Lever1
IRS CPEO ✓RegionalHQ: Overland Park, KS · Est. 2012
Lever1 is a Kansas City-based IRS CPEO certified Professional Employer Organization led by CEO Erica Brune.
Nextep
IRS CPEO ✓RegionalHQ: Norman, OK · Est. 1997
Nextep is a Norman, Oklahoma-based IRS CPEO certified and ESAC accredited Professional Employer Organization founded in 1997.
Syndeo Outsourcing
IRS CPEO ✓RegionalHQ: Wichita, KS · Est. 2010
Syndeo is a Wichita, Kansas-based ESAC accredited Professional Employer Organization and IRS CPEO certified company founded in 2002.
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.
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…
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…
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.
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…
Harbor America
RegionalHQ: Houston, TX · Est. 2000
Harbor America is a Houston, Texas-based PEO providing payroll, employee benefits, HR administration, workers' compensation, and compliance services to businesses in Texas and the South Central region, with particular st…
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.
Employer Flexible
RegionalHQ: Houston, TX · Est. 2000
Employer Flexible is a Houston, Texas-based PEO providing co-employment services including payroll, employee benefits, HR administration, workers' compensation, and compliance support.
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.
AHEAD HR
RegionalHQ: Lisle, IL · Est. 1995
AHEAD HR is a Lisle, Illinois-based PEO founded in 1995 by William and Andrea Bellis.
Creative Business Resources
RegionalHQ: Denver, CO · Est. 1991
Creative Business Resources is a Denver, Colorado-based PEO founded in 1991, providing co-employment services to businesses across the Mountain West and Central Plains.
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.
Employers Edge
RegionalHQ: Omaha, NE · Est. 2000
Employers Edge is an Omaha, Nebraska-based PEO providing co-employment services including payroll, employee benefits, HR administration, and compliance support to businesses across the Great Plains.
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 Missouri
Missouri reached a significant wage milestone in 2026: voters approved an initiative raising the state minimum wage to $15.00 per hour as of January 1, 2026 — one of the larger increases in recent Missouri history. Missouri will remain at $15.00 per hour going forward, with no additional scheduled increases at this time. Missouri is a right-to-work state (since 2017), meaning employees cannot be required to join a union or pay union dues as a condition of employment, though union presence remains significant in some manufacturing and transportation sectors.
Workers' compensation insurance is required for Missouri employers with 5 or more employees, or for employers in the construction industry with 1 or more employees. Coverage is obtained through private insurance carriers. Missouri follows the federal WARN Act, requiring 60 days advance notice for layoffs affecting 50 or more employees. Missouri has no statewide paid sick leave law and no state-level paid family leave program — the federal FMLA applies to employers with 50 or more employees.
Missouri's Human Rights Act prohibits employment discrimination and applies to employers with 6 or more employees, providing broader coverage than federal Title VII's 15-employee threshold. Missouri has no pay transparency requirement. Kansas City and St. Louis are Missouri's two major metros, each with distinct labor markets — Kansas City is growing in technology, healthcare, and financial services, while St. Louis has significant healthcare, agricultural, and manufacturing employment. Employers with employees in St. Louis should note that the city has historically attempted to set its own minimum wage ordinances, which have faced legal challenges.
The $15.00 minimum wage increase makes workforce cost planning more important than ever for Missouri small businesses, particularly in retail, food service, and other lower-wage industries. A PEO can help Missouri businesses adapt to the new wage floor while providing access to competitive benefits packages and HR infrastructure that help attract and retain workers in both competitive urban and rural labor markets. Use the form on this page to connect with qualified PEOs serving Missouri businesses.
Already working with a PEO and considering a switch? PEO Alternatives has independent comparisons of the top providers to help you evaluate your options.
Frequently Asked Questions
What is the minimum wage in Missouri in 2026?
Missouri's minimum wage is $15.00 per hour as of January 1, 2026, following a voter-approved initiative. Missouri will remain at $15.00 per hour going forward with no additional scheduled increases at this time. Tipped employees may be paid a lower cash wage if their tips bring total compensation to at least the minimum wage.
Is workers' compensation required in Missouri?
Yes. Missouri requires employers with 5 or more employees to carry workers' compensation insurance. In the construction industry, coverage is required for employers with even 1 employee. Coverage is obtained through licensed private insurance carriers. A PEO provides workers' comp as part of the co-employment arrangement, typically at competitive rates.
Is Missouri a right-to-work state?
Yes. Missouri enacted its right-to-work law in 2017, meaning employees cannot be required to join a union or pay union dues as a condition of employment. This is relevant for businesses in Missouri's manufacturing, transportation, and logistics sectors where union organizing activity has historically been more common.
How does the new $15 minimum wage affect Missouri small businesses?
The $15.00 minimum wage represents a significant increase for many Missouri small businesses, particularly in retail, food service, hospitality, and other lower-wage industries. A PEO can help businesses plan for the cost impact, restructure compensation frameworks to maintain appropriate pay differentials between positions, and access benefits that help retain employees without further increasing base pay.