PEOs & ASOs

ADP’s IRS-certified PEO for small and midsize businesses, bundling payroll, benefits administration, HR guidance, and compliance on ADP technology.

PEO historically branded CoAdvantage; as of July 14, 2026 the combined CoAdvantage–PrimePay business markets as CoAd, with unbundled PEO services and co-employment tax/compliance liability.

National PEO founded in 2011 whose HR consultants are licensed employment attorneys; IRS CPEO, ESAC-accredited since 2012, SOC 1 and SOC 2 Type II, 100,000+ employees served.

Certified PEO for small and mid-sized businesses, with co-employment HR, payroll, benefits, risk, recruiting, and a mobile Work Anywhere platform.

IRS-certified PEO serving businesses in all 50 states, with a full PEO package plus à-la-carte ASO and self-service HCM options.

Columbia, Maryland–based PEO and ASO for small and mid-size businesses, with a franchise/hospitality focus, POS integrations, and True Group master policies for workers’ comp, EPLI, and cyber.

Publicly traded national PEO (NYSE: NSP) offering Insperity HR360 co-employment services, plus HRCore and a Workday-based HRScale product.

IRS-certified, ESAC-accredited PEO for small businesses, with published PEPM plans (Basic and Plus) and 24/7 support on a single HR/payroll platform.

Family-owned, IRS-certified PEO based in Pensacola, Florida, offering payroll, benefits, HRIS (MyLandrum), risk/safety, and HR consulting.

Norman, Oklahoma–based PEO with IRS CPEO status since 2017, ESAC accreditation, SOC 1 Type 2, and a national office footprint plus the Elevate by Nextep app.

Paychex professional employer organization services (including Paychex HR Pro and Paychex Oasis) delivered through co-employment on the Paychex Flex platform.

National PEO for small and mid-sized businesses, stating 25+ years in market, 95%+ client retention, and all three primary PEO certifications (IRS CPEO, ESAC, CI workers’ comp).

Optional co-employment PEO on the Rippling workforce platform: master benefits, EPLI and workers’ comp, HR/compliance support, and the ability to turn PEO off without replacing the HRIS.

PEO from Sequoia (comp and benefits firm) built for VC-backed tech startups: outsourced HR/payroll, strategic compensation, and large-company benefits, with ESAC accreditation and IRS CPEO status.

Public PEO (NYSE: TNET) for small and midsize businesses, with a separate HR Plus (non-PEO) option, ESAC accreditation since 1995, and an IRS-certified PEO subsidiary.

HR services company offering PEO (co-employment), ASO (no co-employment), and EOR, plus payroll, benefits, workers’ comp, recruiting, and a mix-and-match marketplace.