Best PEO Companies in Connecticut
Compare Professional Employer Organizations serving Connecticut businesses. Editorial ratings are independent — featured placements are paid visibility, not endorsements.
PEO Companies Serving Connecticut
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.
Extensis
IRS CPEO ✓RegionalHQ: Union, NJ · Est. 1997
ExtensisHR is a Woodbridge, New Jersey-based IRS CPEO certified and ESAC accredited Professional Employer Organization founded in 1997 by Richard Augustyn.
AdvantEdge HR
RegionalHQ: Albany, NY · Est. 2002
A New York state-based PEO with particular expertise in navigating the state's complex employment regulations. Strong nonprofit sector experience.
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.
New England HR
IRS CPEO ✓RegionalHQ: Boston, MA · Est. 1998
A Boston-based PEO with deep expertise in Massachusetts and New England employment law. Known for strong healthcare benefit networks and technology sector support.
Abel HR
IRS CPEO ✓RegionalHQ: Cranbury, NJ · Est. 2000
Abel HR is a Cranbury, New Jersey-based IRS CPEO certified Professional Employer Organization founded in 1992 by James W. Bell Sr.
Alcott HR
IRS CPEO ✓RegionalHQ: Farmingdale, NY · Est. 1988
Alcott HR is a Farmingdale, New York-based IRS CPEO certified and ESAC accredited Professional Employer Organization founded in 1987 — making it the oldest continuously operating PEO in New York State.
ArmHR
IRS CPEO ✓RegionalHQ: East Syracuse, NY · Est. 2010
ArmHR is an IRS CPEO certified Professional Employer Organization that delivers customized HR solutions with a focus on payroll, benefits management, and compliance.
Aspen HR
IRS CPEO ✓RegionalHQ: Boston, MA · Est. 2015
Aspen HR is a Walnut Creek, California-based IRS CPEO certified Professional Employer Organization founded in 2017.
Genesis HR Solutions
IRS CPEO ✓RegionalHQ: Burlington, MA · Est. 1993
Genesis HR Solutions is a Burlington, Massachusetts-based IRS CPEO certified and ESAC accredited Professional Employer Organization founded in 1991.
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…
Advantage Personnel Resources
IRS CPEO ✓RegionalHQ: Melville, NY · Est. 2015
Advantage Personnel Resources is a Melville, New York-based IRS CPEO certified Professional Employer Organization serving businesses across the Northeast and nationally.
CLEAR PEO
IRS CPEO ✓RegionalHQ: Langhorne, PA · Est. 2018
CLEAR Employer Services is an IRS CPEO certified and ESAC accredited Professional Employer Organization offering full-service PEO, ASO, HRO, and payroll solutions to businesses across the United States.
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.
Stafflink Outsourcing
IRS CPEO ✓RegionalHQ: Melville, NY · Est. 2018
StaffLink Outsourcing was a Sunrise, Florida-based IRS CPEO certified Professional Employer Organization founded in 1997 by Abram Finkelstein.
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.
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…
Employer Services Corporation
RegionalHQ: Amherst, NY · Est. 1994
Employer Services Corporation (ESC) is an Amherst, New York-based PEO founded in 1994, providing payroll processing, employee benefits administration, HR outsourcing, workers' compensation, and compliance services to sma…
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…
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…
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.
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.
Emplova
RegionalHQ: Melville, NY · Est. 2015
Emplova is a Melville, New York-based PEO providing co-employment services including payroll processing, employee benefits, HR administration, and compliance support to businesses in the Northeast United States.
Genesis HR
IRS CPEO ✓NationwideHQ: Burlington, MA · Est. 1991
Genesis HR Solutions is a Burlington, Massachusetts-based IRS CPEO certified PEO founded in 1991, providing co-employment services to businesses across New England and nationally.
Trion Group
RegionalHQ: Wayne, PA · Est. 1990
Trion Group is a Wayne, Pennsylvania-based PEO and benefits administration company founded in 1990, providing co-employment services, employee benefits, payroll, HR consulting, and compliance support to businesses in the…
Abacus HR
RegionalHQ: Bethlehem, PA · Est. 2002
Abacus HR is a Bethlehem, Pennsylvania-based PEO providing co-employment services including payroll processing, employee benefits administration, HR outsourcing, and compliance support to businesses in the Northeast and…
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 Connecticut
Connecticut has one of the most comprehensive employee protection frameworks in the Northeast, with a minimum wage of $16.94 per hour as of January 1, 2026 — among the highest in the country. Connecticut is not a right-to-work state, and its labor market — particularly in Fairfield County and the Hartford corridor — is highly competitive across financial services, insurance, healthcare, and technology. Connecticut's minimum wage is indexed to adjust automatically, so employers should verify the current rate each year.
Connecticut has a robust Paid Family and Medical Leave (PFML) program providing employees with up to 12 weeks of paid leave per year for qualifying family or medical reasons. The program is funded through a 0.5% employee payroll contribution and administered by the Connecticut Paid Leave Authority. Connecticut also requires most employers to provide paid sick leave — effective 2025, the law was expanded to cover employers with 1 or more employees, up from the prior 50-employee threshold, with employees accruing 1 hour of paid sick leave per 40 hours worked, up to 40 hours per year.
Connecticut follows the federal WARN Act, requiring 60 days advance notice for layoffs affecting 50 or more employees. Connecticut's Fair Employment Practices Act provides broad anti-discrimination protections that apply to employers with 3 or more employees — one of the lowest thresholds in the country. Connecticut also has pay equity and pay transparency requirements, requiring employers to provide salary ranges to applicants who request them and prohibiting employers from asking about salary history.
Connecticut's economy is anchored by financial services, insurance, defense manufacturing, healthcare, and education — with a significant concentration of hedge funds and asset managers in Fairfield County. The state's proximity to New York City means that compensation expectations are often calibrated to the New York metro market. A PEO with Connecticut expertise can help businesses manage PFML administration, expanded paid sick leave compliance, pay equity obligations, and the full range of state-specific HR requirements in one of the more complex compliance environments in New England. Use the form on this page to connect with qualified PEOs serving Connecticut 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 Connecticut in 2026?
Connecticut's minimum wage is $16.94 per hour as of January 1, 2026. Connecticut's minimum wage is indexed to increase automatically based on a set formula, so employers should verify the current rate each January. Tipped employees in Connecticut are subject to different rates — bartenders at $8.23 per hour and hotel and restaurant wait staff at $6.38 per hour, provided tips bring total compensation to at least the minimum wage.
How does Connecticut's Paid Family and Medical Leave program work?
Connecticut's PFML program provides employees with up to 12 weeks of paid leave per year for qualifying family or medical reasons, funded through a 0.5% employee payroll contribution. Benefits are paid by the Connecticut Paid Leave Authority, not the employer. A PEO can manage payroll deduction administration, employee notices, and leave coordination on behalf of Connecticut employers.
Does Connecticut require paid sick leave?
Yes. Connecticut's paid sick leave law was expanded in 2025 to cover employers with 1 or more employees — significantly broader than the prior 50-employee threshold. Employees accrue 1 hour of paid sick leave per 40 hours worked, up to 40 hours per year. Leave can be used for the employee's own illness, a family member's illness, or for reasons related to domestic violence.
Does Connecticut have pay transparency requirements?
Yes. Connecticut requires employers to provide salary range information to job applicants who request it and prohibits employers from asking about an applicant's salary history. Connecticut also has pay equity provisions requiring equal pay for comparable work. A PEO can help businesses design compliant compensation frameworks and job posting practices that meet Connecticut's pay transparency and equity requirements.