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PEO SoftwareUpdated Oct 8, 2026

Oasis Review — Paychex-Backed PEO for Small and Mid-Size Business HR Teams

Paychex

Oasis Outsourcing was an independent professional employer organization until Paychex bought it in 2018, and it is now fully part of the Paychex brand, sold within Paychex HR as Paychex PEO. As co-employer, Oasis runs your payroll through Paychex, puts staff on its benefit plans and workers' comp policy, and takes on tax filing and much of the HR paperwork. Oasis targets small and mid-size businesses with 10 to 500 employees that want the infrastructure of a large HR department without building one in-house. The Paychex backing gives Oasis access to carrier relationships, technology resources, and compliance expertise that smaller independent PEOs cannot match.

Oasis pricingOasis alternatives
Written by RajatRajatEditorThe PeopleOpsClub research desk compiles pricing, packaging and implementation detail from vendor documentation and product help centres, and hands it to a named analyst for review before publication.|Fact-checked by ChandrasmitaChandrasmitaFact-checkerChandrasmita verifies pricing claims, compliance data, and feature accuracy across HR software categories. She brings direct experience in people operations and HR technology procurement at global organisations.

Pricing model

Quoted by Paychex sales, usually per employee per month or as a share of payroll

Deployment

Cloud

Platforms

Web, iOS, Android

Free trial

No free trial; demo and consultation available through Paychex sales

Legal name

Paychex

Oasis pricing, Paychex PEO costs, and what the custom quote covers

Paychex lists no Oasis or PEO rates anywhere on paychex.com, like Insperity and ADP TotalSource, so a quote is the only route to a number. The inputs are headcount, industry, which states your employees work in, the medical plans you pick and your workers' comp classification codes. According to third-party estimates from Expert Market and G2, PEO pricing from established providers like Oasis typically ranges from $150 to $250 per employee per month, though actual costs can fall outside that range depending on the benefits package.

The custom pricing model means every company gets a different rate, and there are no published benchmarks to anchor expectations. For a 50-person company, estimated monthly PEO costs could range from $7,500 to $12,500 per month depending on benefits and risk factors. Unlike Justworks, which publishes PEO rates of $79 (Basic) and $109 to $124 (Plus) per employee per month, Oasis gives you no figure to plug into a spreadsheet until a Paychex rep has scoped your account.

See the full Oasis pricing breakdown
Oasis PEO (Custom): Custom quote required

Pricing last checked on March 17, 2026. View source

Editorial verdict

Why Oasis stands out for SMBs wanting Paychex-backed PEO services

Oasis sits between the boutique PEOs and the self-serve ones: more financially secure than a regional independent, less open on pricing than Justworks and with fewer benefits design options than TriNet.

The Paychex backing is the genuine differentiator. You get access to a mature payroll engine, broad carrier relationships for benefits, and compliance resources that come from decades in the HR services business. The technology platform has improved significantly since the Paychex acquisition, though it still trails purpose-built PEO platforms in user experience.

Pricing transparency is the weak spot. You cannot model your costs without going through a sales process, which makes comparison shopping harder. For SMBs in the 10-to-100 employee range that want a PEO with enterprise backing and are willing to go through the quote process, Oasis is a credible option. If pricing transparency is a priority, Justworks gives you numbers on their website without a phone call.

For a 40-person company, a publicly traded parent behind its payroll and benefits is worth more than it sounds, because a PEO failing mid-year would take health coverage and tax filings with it.

Oasis is best for

Companies of 10 to 500 employees that want a PEO with Paychex's balance sheet behind it, rather than a regional independent, get the most from Oasis.

It fits companies that value the reliability and carrier relationships that come with Paychex's scale, and are comfortable with the co-employment model. If your priority is a PEO that will still be operating five years from now with the same benefits carriers and compliance infrastructure, Oasis's Paychex parentage provides that assurance.

If you want a price before any sales call, go to Justworks, which publishes its PEO rates. If a financially secure co-employer and a wider carrier choice matter more to you, request an Oasis quote.

Why Oasis stands out

Oasis stands out because it combines PEO flexibility with Paychex's enterprise scale and financial stability.

Most small PEOs operate with limited carrier relationships and thin compliance teams. Oasis inherits Paychex's network of insurance carriers, retirement plan administrators, and compliance experts — resources that are difficult for an independent PEO to replicate. The payroll engine is Paychex's own, which served about 800,000 payroll clients in fiscal 2026.

Compared to Insperity and ADP TotalSource, Oasis offers a similar PEO model with competitive benefits access. Compared to Justworks, Oasis trades pricing transparency for deeper customization and carrier options. The Paychex infrastructure gives Oasis a stability advantage that matters in a PEO market where smaller providers occasionally shut down or get acquired.

Commercial fit

Paychex sells Oasis to owners who want an HR department's worth of payroll, benefits and compliance work handled without hiring one. The claim holds up because the payroll engine, retirement division and carrier contracts are Paychex's own.

The commercial risk is the opacity of the pricing model. Without published rates, buyers invest time in the sales process before knowing whether Oasis fits their budget. The co-employment model carries the same structural dependency as any PEO — exiting requires migrating payroll, benefits, and compliance simultaneously.

For companies that are already Paychex payroll customers considering a move to PEO, Oasis is the natural upgrade path. For companies evaluating PEOs from scratch, Oasis should be on the quote list alongside Insperity and ADP TotalSource, with Justworks as the transparent-pricing benchmark.

Browse all PEO software tools

Oasis is the PEO arm of Paychex and publishes no rates; third-party estimates put total cost around $150 to $250 per employee per month, with quotes built on industry, headcount and risk profile. Each quote requires a sales consultation, so buyers comparing it with Justworks's published $59 and $109 tiers should allow time for that step.

Still comparing? Dig deeper

Oasis pricingOasis alternatives

Oasis features: payroll processing, benefits enrollment, workers' comp, and 401(k)

01

Oasis PEO model and Paychex co-employment structure

Signing with Oasis makes it the co-employer of your staff: it reports wages and taxes under its own tax IDs, sponsors the health plans and carries the workers' comp policy, all on Paychex systems. You still hire, fire, set pay and direct the work, and Oasis handles payroll, tax filing, benefits enrollment and much of the compliance paperwork.

The Paychex backing means the co-employment relationship is supported by a company with about 800,000 payroll clients and 2.6 million worksite employees across its PEO and ASO services as of May 2026, and more than 50 years in HR services. This scale provides insurance carrier relationships, compliance expertise, and technology infrastructure that independent PEOs cannot match.

How Oasis co-employment works with Paychex infrastructure

Employees see Oasis or Paychex as the employer on tax documents, but your company name appears on all business-facing materials. The co-employment relationship is managed through Paychex's legal and compliance framework, which has been validated across thousands of PEO engagements. The technology platform, benefits administration, and payroll processing all run on Paychex systems.

Oasis PEO exit process and transition planning

Leaving Oasis means lining up a new payroll provider, new health plans, your own comp policy and state tax accounts before the cutover date. Paychex can facilitate a transition to standalone Paychex payroll as an intermediate step, which is unique to Oasis among PEOs. Most companies need 4 to 8 weeks to plan and execute a full PEO exit.

02

Oasis payroll processing and multi-state tax filing

Paychex Flex processes Oasis payroll, paying staff by direct deposit, withholding and filing federal, state and local taxes, issuing W-2s and 1099s, deducting garnishments and closing out the year. The system supports salaried and hourly employees, overtime calculations, and multiple pay schedules.

Multi-state payroll is a particular strength, given Paychex's experience processing payroll across all 50 states. State tax registration, withholding calculations, and filing are handled automatically. For companies with remote employees in multiple jurisdictions, this eliminates one of the most complex aspects of HR administration.

Oasis off-cycle and bonus payroll runs

The platform supports off-cycle payroll runs for bonuses, commissions, and corrections without waiting for the next scheduled pay date. Off-cycle runs include full tax calculations and direct deposit processing. This flexibility matters for companies with variable compensation structures.

Oasis contractor payments and 1099 processing

Oasis handles contractor payments alongside employee payroll through the Paychex platform. Contractors receive direct deposit payments, and the system generates 1099 forms at year-end. This consolidates employee and contractor payments in a single system.

03

Oasis benefits administration and carrier access

An Oasis benefits package can combine medical, dental and vision cover from more than one carrier with HSAs, FSAs, life and disability insurance and a 401(k). Paychex's buying volume usually opens more insurance networks than a small PEO can reach.

Benefits enrollment is handled through the Paychex Flex platform, where employees can compare plans, see costs, and enroll during onboarding or open enrollment. Employers work with their Oasis benefits advisor to select which plans to offer and set contribution levels. Qualifying life event changes, COBRA administration, and carrier communication are managed by the Oasis team.

Oasis medical plan options and carrier diversity

Oasis typically offers medical plans from multiple carriers, which varies by state and group size. This carrier diversity is an advantage over PEOs locked into one or two networks. Employers receive plan comparisons from their Oasis advisor to evaluate cost, coverage, and network adequacy for their specific employee locations.

Oasis HSA and FSA account administration

Health savings accounts and flexible spending accounts are available as part of the benefits package. Contributions are deducted from payroll pre-tax and managed through a third-party administrator. The integration with payroll ensures contributions are calculated and deposited automatically each pay period.

04

Oasis compliance support and workers' compensation management

Compliance support through Oasis covers employment law guidance, ACA compliance, workers' compensation claims management, COBRA administration, and state-specific regulatory tracking. The compliance team draws on Paychex's nationwide HR expertise, which covers employment regulations across all 50 states.

Oasis puts your staff on its workers' comp coverage as part of the PEO fee, manages claims and prices the coverage on your industry codes and claims history. For small businesses, bundling workers' comp into the PEO eliminates the administrative burden of shopping for policies, managing audits, and handling claims independently.

Oasis workers' comp claims processing and rate management

Oasis handles the full workers' compensation cycle: policy procurement, premium payments, claims filing and rate renegotiation. The pooled risk approach through Paychex can result in lower premiums for companies with clean claims histories. Annual audits are managed by the Oasis team rather than requiring employer participation.

Oasis state-specific regulatory compliance monitoring

The platform monitors employment law changes across every state where your employees work. This includes paid leave mandates, minimum wage updates, harassment training requirements, and workplace posting obligations. Alerts notify you when new requirements take effect, and the compliance team provides guidance on implementation.

05

Oasis retirement plan administration and 401(k) services

Oasis provides 401(k) retirement plan administration through Paychex's retirement services division, one of the largest 401(k) recordkeepers in the United States. The service includes plan design, employee enrollment, contribution processing through payroll, employer match configuration, compliance testing, and Form 5500 filing.

For small businesses, the retirement plan administration removes the complexity of selecting a 401(k) provider, negotiating fund fees, and managing annual compliance requirements. Paychex's scale in the retirement space means competitive fund options and established administrative processes.

Oasis 401(k) plan design and employer match options

Employers can configure matching contribution formulas, vesting schedules, and eligibility requirements through their Oasis advisor. Plan design options include traditional 401(k), Roth 401(k), and safe harbor plans. The flexibility in plan design allows companies to tailor the retirement benefit to their budget and competitive positioning.

Oasis retirement compliance testing and Form 5500 filing

Paychex's retirement compliance team runs the annual tests, including ADP and ACP, top-heavy and coverage testing. Form 5500 filing is completed on behalf of the plan sponsor. This removes one of the most technical and liability-prone aspects of offering a 401(k).

06

Oasis technology platform and Paychex Flex integration

The Oasis technology experience is delivered through the Paychex Flex platform, which provides web and mobile access for employees and administrators. The platform covers payroll management, benefits enrollment, time and attendance, PTO tracking, document management, and employee self-service.

The integration with Paychex Flex means Oasis clients get access to the same technology infrastructure that serves Paychex's broader client base. This includes mobile apps for iOS and Android, reporting dashboards, and integrations with accounting software like QuickBooks and Xero.

Oasis employee self-service portal features

Employees can access pay stubs, tax documents, benefits information, PTO balances, and personal information updates through the self-service portal. The mobile app provides the same functionality on iOS and Android devices. Self-service reduces the administrative burden on HR and managers for routine employee requests.

Oasis accounting and third-party integrations

The Paychex Flex platform integrates with QuickBooks, Xero, and other accounting software for automatic payroll journal entry sync. Additional integrations are available through the Paychex marketplace. The integration library is broader than most independent PEOs but narrower than dedicated integration platforms like Rippling.

Oasis pros and cons: benefits access, payroll, compliance, and Paychex integration

Evaluating Oasis means separating what sounds strong in the demo from what holds up after implementation for PEO software teams.

Strengths

Where Oasis earns its place for smb teams

Oasis Paychex backing provides financial stability and carrier access that independent PEOs cannot match

The single biggest advantage of Oasis is its parentage. Paychex is a publicly traded company that reported $6.5 billion in revenue for fiscal 2026, processing payroll for hundreds of thousands of businesses. This gives Oasis access to insurance carrier relationships, retirement plan administrators, and compliance resources that small independent PEOs simply cannot replicate.

For PEO buyers, financial stability matters because your benefits, payroll, and compliance infrastructure depend on the PEO remaining solvent. Multiple industry analysts note that Paychex's backing eliminates the counterparty risk that exists with smaller PEO providers.

The carrier access translates to more benefits options — Oasis can offer medical plans from multiple carriers rather than being locked into one or two networks, which gives employees more choice in providers and plan designs.

Oasis payroll runs on Paychex Flex with tax filing in all 50 states

Oasis clients run payroll on Paychex Flex, the platform Paychex uses for its own payroll clients. It files taxes in every state you employ people, pays by direct deposit, issues W-2s and 1099s, withholds wage garnishments and prepares year-end reports. For distributed teams, the multi-state payroll support is mature and well-tested, covering every jurisdiction in the US.

Paychex runs payroll for about 800,000 clients, which means the tax filing engine has been validated across every edge case — local tax districts, reciprocity agreements, and state-specific withholding rules. This matters for growing companies that add employees in new states regularly.

The payroll reliability is consistently cited in G2 and Capterra reviews as one of Oasis's strongest features, with minimal reports of late payments or tax filing errors.

Oasis benefits administration offers broader carrier options than single-network PEOs

Because Paychex buys benefits for its whole customer base, including clients outside the PEO, Oasis can usually offer medical, dental and vision plans from several insurance carriers. This carrier diversity matters because employees in different regions may prefer different provider networks.

Compared to Justworks, whose carrier list is shorter and varies by state, Oasis can offer plans from additional carriers depending on your location and group size. The benefits enrollment process is handled through the Paychex platform, with employees selecting plans during onboarding and open enrollment periods.

The broader carrier access is particularly useful for companies with employees spread across multiple states, where a single-carrier approach may leave some employees with limited in-network options.

Oasis compliance support covers employment law, workers' comp, and regulatory tracking across jurisdictions

Compliance is where the Paychex infrastructure pays dividends. Oasis provides dedicated HR support for employment law questions, ACA compliance, workers' compensation claims management, COBRA administration, and state-specific regulatory requirements. The compliance team draws on Paychex's nationwide expertise rather than a small internal staff.

For multi-state employers, Oasis tracks paid leave mandates, minimum wage changes, harassment training requirements, and workplace posting obligations for every jurisdiction where you have employees. This monitoring is proactive — you receive alerts when new requirements take effect.

The workers' compensation management is integrated, with Oasis handling policy procurement, claims processing, and rate negotiations. Bundling workers' comp into the PEO typically reduces administrative burden and can lower premiums through Paychex's pooled risk profile.

Oasis retirement plan administration includes 401(k) setup and ongoing management

Oasis offers 401(k) retirement plan administration as part of the PEO package, run by Paychex's retirement services division. This includes plan design, employee enrollment, contribution processing through payroll, employer match setup, and regulatory compliance (including annual testing and Form 5500 filing).

For small businesses, setting up a 401(k) independently involves selecting a plan provider, negotiating fees, handling compliance testing, and managing ongoing administration. Oasis bundles all of this into the PEO relationship, removing the need for a separate retirement plan vendor.

Paychex is one of the largest 401(k) recordkeepers in the US, which means the retirement infrastructure is mature and well-supported, with investment options from multiple fund families.

Oasis technology platform has improved under Paychex ownership with self-service portals

The Oasis technology platform has been integrated with Paychex Flex, giving employees and administrators access to a self-service portal for payroll, benefits enrollment, PTO requests, and document management. The platform is web-based and mobile-accessible, which meets the baseline expectation for modern HR tools.

Employees can view pay stubs, update personal information, enroll in benefits, and submit time-off requests through the portal. Managers get dashboards for team management, timesheet approvals, and basic reporting.

Paychex Flex does the job, though its screens feel busier than Justworks' interface. The interface reflects Paychex's enterprise heritage more than a startup-friendly design, which means there is a steeper learning curve for first-time users.

Limitations

What to press on in Oasis pricing calls before signing

Oasis does not publish pricing, which makes comparison shopping time-consuming

No Oasis price appears on paychex.com, so each buyer sits through a consultation and waits for a proposal before seeing a total. Justworks, by contrast, charges $79 a head each month for PEO Basic and $109 to $124 for PEO Plus, which makes the Paychex process feel slow when you are comparing three PEOs at once.

For HR buyers evaluating three or four PEOs simultaneously, the custom quote approach adds days or weeks to the comparison process. You cannot model your costs in a spreadsheet until you have received and deciphered the proposal.

The opacity also makes it harder to verify whether you are getting a competitive rate, since there are no published benchmarks to anchor negotiations.

Oasis co-employment model creates structural dependency that is harder to unwind than software

Under co-employment, Oasis files payroll taxes under its own IDs and holds the benefits and workers' comp contracts. Leaving is therefore harder than cancelling software: payroll, health plans, the comp policy and tax filings all have to move to new providers on the same date.

Companies that value full control over their employer-of-record status may find the co-employment arrangement restrictive. The exit process typically requires 4 to 8 weeks of planning and execution.

Multiple reviewers note that the transition off any PEO, including Oasis, is a multi-week project that demands careful coordination to avoid gaps in benefits coverage or payroll processing.

Oasis user interface reflects Paychex enterprise heritage rather than modern SaaS design

While the technology platform has improved since the Paychex integration, the user interface still feels more like enterprise software than a modern SaaS product. Navigation can be unintuitive for first-time users, and some workflows require more clicks than competitors like Justworks or Gusto.

Capterra reviews mention a learning curve during initial setup, particularly for administrators coming from simpler HR tools. The mobile experience is functional but not as refined as purpose-built mobile-first platforms.

For tech-savvy teams that expect consumer-grade UX in their business tools, the Oasis interface may feel dated. For teams that prioritize functionality over design, the platform covers the essentials adequately.

Oasis sales process can be slow and complex for smaller companies that want quick decisions

The Paychex sales infrastructure means buying Oasis involves consultations, proposals, and contract negotiations that can stretch over several weeks. For a 15-person company that just wants PEO services, the enterprise-style sales process can feel disproportionate.

Smaller companies often report that the sales cycle involves multiple touchpoints with different Paychex representatives before reaching a final proposal. This contrasts sharply with Justworks, where you can sign up online and start onboarding within days.

The complexity of the sales process is a feature for larger companies that need custom benefits packaging and detailed risk assessments, but it is a friction point for small businesses that want a straightforward buying experience.

Oasis HR tools lack the depth of standalone HRIS platforms for advanced people operations

The HR tools included with Oasis cover onboarding, employee records, PTO management, and basic reporting, but they do not include an applicant tracking system, performance management, employee engagement surveys, or advanced workforce analytics.

Companies that need recruiting workflows, goal tracking, or compensation benchmarking will need separate tools alongside Oasis. This increases total software spend and creates integration complexity that a unified HRIS like Rippling or BambooHR would avoid.

For PEO buyers whose primary need is benefits and compliance rather than advanced HR technology, this is an acceptable trade-off. For companies that want a single platform for all people operations, the feature gaps may push them toward a different solution.

Interested in Oasis?

Leave your details and we'll connect you with Oasis so they can share current pricing, packaging, and what the buying process looks like.

Oasis plan structure and what buyers should verify

What the Oasis custom quote process actually involves

Getting an Oasis PEO quote starts with a consultation through Paychex sales. The representative will ask about your headcount, industry, state distribution of employees, current benefits offering, workers' compensation history, and desired benefits package. Based on this information, they build a custom proposal that bundles payroll processing, benefits administration, workers' comp, compliance support, and HR tools into a single per-employee or percentage-of-payroll fee.

The quote typically takes 5 to 10 business days to produce, which is standard for PEOs but slower than SaaS platforms where you can see pricing immediately. The proposal will include the monthly PEO administration fee, estimated benefits premiums (employer and employee shares), workers' compensation rates, and any implementation or setup fees. My recommendation is to request a detailed fee breakdown rather than accepting a bundled number, so you can compare individual components against standalone alternatives.

How Oasis PEO costs compare to managing HR independently

The value calculation for Oasis depends on what you would spend assembling the same services independently. A standalone payroll system costs $6 to $15 per employee per month. A benefits broker charges 3 to 5 percent of premiums. Workers' compensation insurance varies by industry but adds another $2 to $10 per $100 of payroll. Compliance support from an HR consultant runs $150 to $300 per hour. When you stack these costs, the PEO bundled approach often looks competitive for companies under 75 employees.

Where the math changes is at larger headcounts. Companies with 100-plus employees can negotiate group benefits rates directly, hire an in-house HR generalist for $50,000 to $70,000 per year, and use standalone payroll software. At that point, the PEO per-employee fee starts to look expensive relative to the disaggregated alternative. Paychex's size gives Oasis some bargaining power on benefits pricing that smaller PEOs lack, but it does not eliminate the fundamental economics of the PEO cost curve.

Before you sign

Questions to ask Oasis before you commit

Because Oasis now sells through Paychex, the demo is run by a Paychex rep and will cover Paychex Flex, the carrier list for your states and a bundled PEO fee. Push the call toward these four points.

1

Request a detailed fee breakdown that separates the PEO administration fee from benefits premiums and workers' compensation costs. Many PEO proposals bundle everything into a single per-employee number, which makes it impossible to compare components against standalone alternatives. Ask Oasis to itemize each cost category so you can check whether the PEO bundle actually beats assembling the same services yourself.

2

Verify which insurance carriers and plan options are available for your specific employee locations. Oasis benefits carrier access varies by state and metro area. Ask for a plan comparison specific to your team's zip codes before assuming the carrier diversity advantage applies to your workforce. If key employees are in regions with limited carrier options, the benefits value proposition weakens.

3

Ask about the Paychex Flex platform experience and request a demo walk-through of the administrator and employee interfaces. The technology experience matters for day-to-day operations. Walk through payroll submission, benefits enrollment, PTO management, and reporting in the demo. Pay attention to whether the interface feels intuitive for your team or requires significant training.

4

Understand the PEO exit process and whether a transition to standalone Paychex payroll is an option. Oasis has a unique advantage in that companies can potentially transition from PEO to standalone Paychex payroll without a full system migration. Ask about this transition path, the timeline, and any costs involved. This optionality reduces the lock-in risk compared to PEOs where exiting means starting from scratch.

Browse all PEO software tools

Our evaluation

How we evaluated Oasis

Rajat worked through Oasis directly. Every figure below was checked against Oasis's published pricing on March 17, 2026. Follow the link and check it yourself — if the vendor has moved since, that date tells you how stale this page is.

Plans as published

PlanList price
Oasis PEO (Custom)Custom quote required (~$150–$250 PEPM estimated)

Trial: No free trial; demo and consultation available through Paychex sales

What the list price doesn't cover

Benefits selections drive the majority of PEO cost variation

The PEO administration fee is a relatively small portion of the total per-employee cost. Benefits premiums — medical, dental, vision, life, and disability insurance — typically represent 50 to 70 percent of the bundled PEO rate. A company that selects a high-deductible health plan with modest employer contributions will see a significantly lower per-employee total than a company offering a rich PPO plan with generous employer contributions. When comparing PEO proposals, ensure you are comparing equivalent benefits packages — a lower headline number may reflect leaner benefits rather than a better deal.

Co-employment exit costs are real and often underestimated

The PEO co-employment model creates a structural dependency. Exiting requires simultaneously migrating payroll processing, benefits enrollment, workers' compensation policies, and tax filing to new providers. The transition typically takes 4 to 8 weeks of planning and execution, during which your HR team manages dual systems. Benefits continuity is the biggest risk — employees must be enrolled in new plans with no coverage gap, which requires careful coordination with open enrollment periods or qualifying life events. Budget $10,000 to $30,000 in transition costs including consulting, software setup, and the HR team time required to manage the migration.

What we'd confirm on a demo

Request an itemized fee breakdown that separates administration from benefits and workers' comp

Many PEO proposals bundle everything into a single per-employee number. Ask Oasis to itemize the PEO administration fee, benefits premium (employer and employee shares), workers' compensation rate, and any retirement plan administration fees separately. This lets you compare individual components against standalone alternatives and understand which parts of the bundle are delivering value versus inflating the total.

Verify which insurance carriers and plan options are available for your employee locations

Oasis benefits carrier access varies by state and metro area. Ask for a plan comparison specific to your team's zip codes before assuming the carrier diversity advantage applies to your workforce. If key employees are in regions with limited carrier options, the benefits value proposition weakens. Request the carrier comparison early in the evaluation.

Understand the co-employment exit process and timeline

Before committing, ask what happens if you need to leave the PEO. What is the notice period? What transition support does Oasis provide? Can you migrate to standalone Paychex payroll as an intermediate step? Understanding the exit process upfront reduces future lock-in risk. The Paychex transition path is a unique advantage — verify that it is available for your specific engagement type.

Free templates for this

Frequently asked questions about Oasis PEO, Paychex backing, and benefits

Is Oasis the same as Paychex PEO?

Effectively, yes. Paychex acquired Oasis Outsourcing in 2018, and Paychex now says Oasis is fully part of the Paychex brand and one of the options within Paychex HR. The oasisadvantage.com site redirects to paychex.com, and new customers buy Paychex PEO through Paychex sales. Existing Oasis clients keep their portal login at portal.oasisassistant.com, and payroll, benefits and technology all run on Paychex systems. If you have an older Oasis contract, ask your representative whether any terms change as the brands merge.

How much does Oasis PEO cost per employee?

No published rate exists: Paychex quotes every Oasis PEO account individually from headcount, industry, employee locations, the medical plans chosen and workers' comp risk. Expert Market and G2 place established PEO providers at about $150 to $250 per employee per month, but actual costs can vary significantly. The only way to get an accurate price is through a consultation with a Paychex sales representative, who will build a proposal based on your specific requirements.

What size company is Oasis PEO best for?

Oasis targets small and mid-size businesses with 10 to 500 employees, with the strongest fit being companies in the 25-to-200 range. Companies under 10 employees may not meet PEO minimum requirements, and the per-employee cost structure may not make financial sense at very small headcounts. Companies over 500 employees can typically negotiate competitive benefits rates directly with carriers, reducing the value proposition of the PEO model. It suits companies big enough to gain from group insurance rates but too small to staff their own HR team.

Does Oasis offer benefits from multiple insurance carriers?

Yes, Oasis typically offers medical, dental, and vision plans from multiple insurance carriers through Paychex's group purchasing. The specific carriers available depend on your state and group size. This carrier diversity is an advantage over PEOs like Justworks that are limited to one or two carrier networks. During the proposal process, your Oasis benefits advisor will provide a plan comparison showing which carriers and plans are available for your employee locations. Ask for this comparison early in the evaluation so you can verify network adequacy.

Can I transition from Oasis PEO to standalone Paychex payroll?

Yes, one of the unique advantages of Oasis is the ability to transition to standalone Paychex payroll services if you outgrow the PEO model. Because both Oasis and Paychex run on the same technology platform, the transition can be smoother than migrating from a PEO to an entirely new vendor. You would still need to set up new benefits administration and workers' compensation independently, but the payroll migration is simplified. Ask your Oasis representative about the transition process, timeline, and any fees involved.

Does Oasis include workers' compensation insurance?

Yes. Coverage under Oasis's workers' comp program comes with the PEO arrangement, and Oasis handles procurement, premium payments, claims and rate negotiations through Paychex's risk management team. The pooled approach can result in more favorable rates than a small business would receive purchasing workers' comp independently, particularly for companies in higher-risk industries. Oasis staff also deal with the yearly premium audit, one of the more tedious parts of running a comp policy.

How does Oasis PEO compare to Insperity and ADP TotalSource?

Oasis, Insperity, and ADP TotalSource are all established PEOs targeting similar company sizes. Oasis differentiates through its Paychex backing, which provides extensive payroll infrastructure and a potential transition path to standalone payroll. Insperity is known for its dedicated service model with named HR business partners and strong compliance support. ADP TotalSource draws on ADP's size for benefits buying and adds global payroll options. All three require custom quotes, so direct pricing comparison requires proposals from each. The best choice depends on whether you prioritize Paychex's technology platform, Insperity's service model, or ADP's global reach.

Oasis alternatives worth comparing

Since Oasis became part of Paychex, the real comparison is between Paychex PEO and the other large co-employers. These three are the ones I would quote alongside it.

ProductPricingFree trial
OasisThis toolQuoted by Paychex sales, usually per employee per month or as a share of payrollNo
Infiniti HRCustom quoteNo
ScalePEOCustom quoteNo
CoAdvantageCustom quoteNo
Amplify PEOCustom quoteNo
Engage PEOCustom quoteNo

Infiniti HR

Custom quote

Infiniti HR is a professional employer organization focused on small businesses with 5 to 200 employees that need full-service HR outsourcing without hiring an in-house HR team.

Compare

ScalePEO

Custom quote

ScalePEO is an ESAC-accredited PEO for small businesses, offering Aetna and MetLife benefits and Slavic401k retirement plans.

Compare

CoAdvantage

Custom quote

CoAdvantage is a PEO for service-industry businesses, known for workers' comp and risk management alongside payroll and benefits.

Compare

Amplify PEO

Custom quote

Amplify PEO is a regional professional employer organization that runs payroll, benefits, compliance and workers' comp for small businesses.

Compare

Engage PEO

Custom quote

Engage PEO is an ESAC-accredited professional employer organization for companies with roughly 10 to 300 employees.

Compare
See all Oasis alternatives

Before you decide

The research that changes how buyers shortlist PEO Software.

01
Buyer guide

What Is Co-Employment? The Legal Model Behind PEO Services

Co-employment is the legal arrangement at the core of how PEO services work. Understanding it matters before you sign a PEO contract — it determines what the PEO controls, what liability you retain, and what happens when the relationship ends.

02
Buyer guide

PEO vs ASO: Co-Employment vs Administrative Services Only

A PEO co-employs your workforce. An ASO provides HR administration services without becoming the employer of record. The difference has real consequences for liability, benefits access, and how your employment taxes are filed.

03
Buyer guide

PEO vs Payroll Provider: Full HR Outsourcing vs Payroll-Only

A payroll provider processes your payroll. A PEO co-employs your workforce and bundles payroll with benefits, compliance, and HR support. The right choice depends on how much HR infrastructure you want to outsource and how much you want to own.

04
Buyer guide

Best PEO for Small Business: PEO Options for Teams Under 50

Most PEO comparisons are written for mid-market buyers with HR teams and legal review capacity. This guide is specifically for small businesses under fifty employees where the PEO cost-benefit calculation, support expectations, and contract terms look meaningfully different.