Justworks vs Oasis PEO
How the two PEOs compare on pricing, minimum employees and fit.
| Justworks | Oasis PEO | |
|---|---|---|
| Company size | 1,165 employees | Being confirmed |
| Headquarters | New York, NY | West Palm Beach, FL |
| Founded | 2012 | Being confirmed |
| Pricing | PEO Basic $79 and PEO Plus $124 per employee per month. Some sources still list Plus at $109, so confirm on justworks.com/pricing. | Quote-based. Applicant tracking and performance management cost extra. |
| Pricing model | Published | Quote only |
| Best for | Small teams that want published pricing and a simple platform | Growing small and mid-sized businesses with fewer than 49 employees (Oasis Outsourcing, now part of Paychex) |
| IRS certified (CPEO) | Yes, on the IRS list | Yes, on the IRS list |
| ESAC accreditation | Accredited | Accredited |
| Minimum employees | 2 employees | 5 employees |
Carriers, 401(k) and workers' comp: side by side
| Justworks | Oasis PEO | |
|---|---|---|
| Health carriers | Aetna, UnitedHealthcare, Kaiser Permanente (medical, dental, vision) and MetLife | Not publicly listed yet. We will get this for you: request a quote and we will include it. |
| 401(k) provider | Administered through a third-party partner, reported as Slavic401k | 401(k) and a Pooled Employer Plan (PEP) offered; provider not named |
| Workers' comp | Not publicly listed yet. We will get this for you: request a quote and we will include it. | Workers' compensation plans offered through Paychex Insurance Agency; carrier not named |
| Other named partners | Teladoc and One Medical (as available); EVERFI powers compliance training | Not publicly listed yet. We will get this for you: request a quote and we will include it. |
Due diligence checked November 4, 2026. We only list carriers and partners that a filing, the provider or a named review states. Many PEOs do not publish their carriers or recordkeepers, so "not publicly listed" means we could not find it, not that none exists. If something is missing, request a quote and we will get it from the PEO for you. Lineups vary by state and change at renewal.
Questions to ask before you sign
- Which medical carriers and networks are available in my state and zip code?
- Are the health plans fully insured or partially self-funded, and who bears claims risk?
- Who is the 401(k) recordkeeper, and what are the total plan fees and match options?
- Who is the workers' comp carrier, how are rates set, and what happens to my experience rating if I leave?
- Is the entity that will employ my staff on the IRS CPEO list, and is it ESAC accredited?
- What renewal increase did your plans see in each of the last 3 years?
Choose Justworks if
Small teams that want published pricing and a simple platform.
- Public price list with no base fee
- Payroll, HR support and compliance in one fee
- International Employer of Record add-on at $599 per employee per month
Choose Oasis PEO if
Growing small and mid-sized businesses with fewer than 49 employees (Oasis Outsourcing, now part of Paychex).
- Assigned payroll account manager and HR professional with 24-hour HR phone support
- IRS and ESAC accredited
- Workers' comp, cyber liability and employment practices liability coverage options
Ask Justworks about
- Health premiums are billed on top of the platform fee
- Per-employee cost does not shrink much as headcount grows
Ask Oasis PEO about
- One-year minimum contract with 30 days' written notice to cancel, and an early termination fee may apply
- Interface described as dated
- Sources disagree on the minimum: one says five employees, another says none
Frequently asked questions
Is Justworks or Oasis PEO cheaper?
Justworks: PEO Basic $79 and PEO Plus $124 per employee per month. Some sources still list Plus at $109, so confirm on justworks.com/pricing. Oasis PEO: Quote-based. Applicant tracking and performance management cost extra. Published rates are not directly comparable to quote-only pricing, and health premiums are separate.
Which is better for a small company, Justworks or Oasis PEO?
Justworks is best for small teams that want published pricing and a simple platform. Oasis PEO is best for growing small and mid-sized businesses with fewer than 49 employees (oasis outsourcing, now part of paychex).
Last verified November 4, 2026. Based on third-party reviews and vendor pricing pages. See each provider page for sources.