A general contractor with 25 employees sits in a genuinely tricky spot. You’re past the stage where payroll fits on a spreadsheet and workers’ comp renewals happen over a lunch break — but you’re not big enough to justify a full-time HR director or a dedicated safety officer on the payroll.
At 25 people, you’re likely managing a mix of field crews, project managers, maybe an office admin or two, and seasonal labor that scales with your project pipeline. A PEO can solve real problems at this size: workers’ comp access, benefits administration, compliance management. But only if you pick the right one and structure the relationship correctly.
The wrong PEO can saddle you with rigid pricing that doesn’t flex with your workforce, compliance gaps around contractor-specific regulations, or technology that won’t talk to your job-costing software. These aren’t abstract risks. They show up as surprise audit adjustments, certified payroll headaches, and termination fees when you try to exit.
What follows are seven strategies specifically calibrated for a general contracting firm at the 25-employee mark. Not generic PEO shopping tips — strategies grounded in the operational realities of running crews, managing jobsite risk, and keeping certified payroll straight.
1. Audit Your Actual Risk Profile Before You Talk to Any Provider
The Challenge It Solves
Most business owners walk into PEO conversations without a clear picture of their own risk profile. That’s a problem, because PEOs use your workers’ comp class codes, experience modification rate (EMR), and claims history to set pricing. If you don’t know these numbers cold, you’re negotiating blind — and you’ll accept whatever rate the provider quotes without knowing whether it’s fair.
The Strategy Explained
Before you call a single PEO, pull together your current workers’ comp policy, your NCCI class codes, your EMR, and your three-year claims history. General contractors typically work across several high-rate codes: carpentry (5403), concrete work (5213), roofing (5551), and general construction supervision (5606) are common examples. Each carries a different base rate, and your actual mix matters.
Your EMR is especially important. An EMR above 1.0 signals higher-than-average claims history and will affect what PEOs are willing to offer you. Some PEOs that serve construction clients will decline accounts with poor EMRs outright. Others will quote you but bury a surcharge in the admin fee structure. If you’re dealing with an elevated mod rate, understanding how PEOs handle high insurance mod rates can help you evaluate your options more clearly.
Implementation Steps
1. Request your current loss runs from your workers’ comp carrier — typically a three-to-five year history. This is a standard document any carrier will provide.
2. Confirm your active NCCI class codes with your current broker or carrier. Make sure they accurately reflect the actual work your crews perform, not just the broadest code available.
3. Calculate your current EMR and note any open or pending claims that could affect it at the next renewal cycle.
4. Document your seasonal headcount range — the low point and the high point — so you can model how PEO pricing will move with your workforce.
Pro Tips
If your EMR is above 1.0, don’t hide it. Bring it up first and explain what’s driving it — a single large claim looks different than a pattern of small ones. PEOs that specialize in construction have seen this before and will evaluate the context. The ones that won’t engage with nuance are probably not the right fit for a GC operation anyway.
2. Demand Itemized Workers’ Comp Costs, Not Bundled Quotes
The Challenge It Solves
Workers’ comp is often the primary financial reason a general contractor considers a PEO. Pay-as-you-go comp, access to better rates through the PEO’s master policy, and elimination of large upfront premiums are real benefits. But they’re only real if you can actually see what you’re paying for workers’ comp versus what you’re paying in administrative fees.
The Strategy Explained
Many PEOs bundle workers’ comp costs into a single per-employee rate or a percentage of payroll that combines their admin margin with the actual insurance cost. This makes it nearly impossible to evaluate whether you’re getting a better deal than your current standalone policy. Learning how to track and verify workers’ comp accounting through a PEO can help you see through bundled pricing structures.
Insist on a quote that separates the workers’ comp cost by class code from the administrative service fee. You want to see the effective rate per $100 of payroll for each code, and you want to compare that directly to what your current carrier charges. Some PEOs will push back on this level of transparency — that resistance itself tells you something worth knowing.
Pay-as-you-go workers’ comp is a genuine cash flow benefit for construction businesses that traditionally pay large upfront premiums and then deal with year-end audit adjustments. Factor that operational benefit in, but don’t let it obscure whether the underlying rate is competitive.
Implementation Steps
1. Ask each PEO to provide a line-item breakdown: workers’ comp cost by class code, administrative fee, benefits markup (if applicable), and any other charges.
2. Compare the effective workers’ comp rate per $100 of payroll against your current policy for each active class code.
3. Ask whether the PEO’s workers’ comp is through a captive arrangement, a master policy, or a carrier they resell — this affects your leverage and your audit exposure.
4. Clarify how year-end audits work under the PEO arrangement and who bears the risk of an audit adjustment.
Pro Tips
If a PEO won’t unbundle the quote, ask a broker who specializes in construction workers’ comp to review the all-in rate and give you an independent read on whether it’s competitive. The comparison doesn’t have to be perfect — it just has to be close enough to tell you whether you’re in the right ballpark.
3. Verify Multi-Code and Certified Payroll Capability Before You Assume It Exists
The Challenge It Solves
Generic PEO payroll platforms are built for businesses with a single pay rate, a single location, and straightforward tax filing. General contracting payroll is none of those things. If the PEO’s system can’t handle your actual payroll complexity, you’ll end up doing manual workarounds that eat up time and create compliance exposure.
The Strategy Explained
At 25 employees, your payroll likely involves multiple NCCI class codes, employees who shift between job classifications, and potentially prevailing wage requirements on public or federally funded projects. Certified payroll reporting under the Davis-Bacon Act requires detailed weekly submissions that document hours, wages, fringe benefits, and job classifications for every worker on covered projects. If you work on federal projects, understanding how a PEO for federal contractors handles these requirements is essential.
Ask each PEO to walk you through exactly how certified payroll works in their system. Don’t accept “we support it” as an answer. Ask to see a sample report. Ask how class code changes are handled mid-pay period. Ask whether the system integrates with construction-specific job-costing software like Sage, Procore, or Viewpoint.
Implementation Steps
1. List every payroll complexity you currently manage: class codes, prevailing wage jobs, multi-state employees, union vs. non-union workers, piece-rate or per-diem arrangements.
2. Ask each PEO to demonstrate how their system handles each item on your list — not describe it, demonstrate it.
3. Request a reference from a current construction client in a similar situation who can speak to the payroll platform’s actual performance.
4. Confirm integration capability with your job-costing or project management software, and ask who handles the integration setup and ongoing maintenance.
Pro Tips
If you’re currently on a Davis-Bacon project or expect to bid one, make this a non-negotiable test. A PEO that can’t produce clean certified payroll reports will cost you more in administrative time than you’ll save anywhere else in the relationship.
4. Benchmark PEO Health Benefits Against Independent Broker Quotes
The Challenge It Solves
One of the most common assumptions about PEOs is that their group health benefits are automatically better than what a small employer can get on their own. At five or ten employees, that’s often true. At 25 employees, it’s less clear — and you should verify it rather than assume.
The Strategy Explained
In most states, a 25-person employer qualifies as a small group for health insurance purposes, which means you have access to community-rated plans through the standard small group market. You’re not as disadvantaged as a three-person firm that can’t get meaningful group rates. That changes the calculation.
Before accepting a PEO’s benefits package, get a competing quote from an independent health insurance broker who works with construction employers. Compare plan design, carrier, network, and total cost — including what your employees will pay in premiums. The PEO’s benefits might still win, but you’ll know it’s a real advantage rather than a marketing claim.
Also ask whether the PEO’s benefits are fully insured or self-funded, and whether you’re in a pooled arrangement with other employers. If the pool has a bad claims year, your rates can move at renewal even if your own employees had minimal claims.
Implementation Steps
1. Get a quote from an independent broker for comparable health coverage — same plan design, similar network, same employee contribution structure.
2. Request a breakdown of the PEO’s health plan cost: what the employer pays, what employees pay, and what the PEO’s administrative margin is on the benefits.
3. Ask the PEO about renewal rate history for their health plans over the past three years. Consistent large increases are a warning sign.
4. Evaluate ancillary benefits (dental, vision, life, disability) separately — these are often where PEOs add meaningful value even when health insurance is comparable.
Pro Tips
Don’t dismiss the PEO’s benefits automatically if the premium looks similar to what you can get independently. The administrative simplicity of having benefits managed through the PEO has real value — you just want to make sure you’re not paying a significant premium for that convenience.
5. Get OSHA and Jobsite Safety Responsibilities Defined in Writing
The Challenge It Solves
Co-employment creates a shared employer relationship, and many business owners assume this means the PEO shares OSHA liability. It doesn’t work that way. The worksite employer — you — retains primary responsibility for daily jobsite safety under OSHA regulations. If you’re unclear on this going in, you may be operating with a false sense of coverage.
The Strategy Explained
OSHA recordkeeping requirements, including 300 logs, apply to construction employers regardless of size. The co-employment relationship with a PEO does not transfer your OSHA obligations. What a PEO can legitimately provide is safety program support: written safety plans, training resources, claims management support, and help with OSHA recordkeeping administration. A strong PEO risk management program will clearly delineate these boundaries. What they cannot do is stand in for your foreman on a jobsite.
Before signing, get a clear written description of exactly what safety services the PEO provides and what remains your responsibility. Specifically, ask who maintains the OSHA 300 log, who handles OSHA inspections or citations, who manages the return-to-work program for injured employees, and what safety training the PEO actually delivers versus what they just provide materials for.
Implementation Steps
1. Request a written service description that explicitly lists every safety-related service the PEO provides and the specific responsibilities that remain with you as the worksite employer.
2. Ask who maintains OSHA recordkeeping and who is the designated employer on the 300 log — this matters for compliance and for any future OSHA audit.
3. Clarify the claims management process: who contacts injured employees, who coordinates with the carrier, and what your role is when a claim is filed.
4. Ask whether the PEO has a dedicated safety consultant available to your account, or whether safety support is a self-service resource library.
Pro Tips
If a PEO’s sales pitch leans heavily on “we handle your OSHA compliance,” push back with specific questions. There’s a real difference between administrative support and actual liability transfer. A PEO that understands construction will be clear about this distinction rather than letting you walk away with the wrong impression.
6. Model the Full Cost Including Seasonal Headcount Swings
The Challenge It Solves
The monthly per-employee fee a PEO quotes you looks clean and manageable. The actual total cost of the relationship — accounting for seasonal workforce changes, minimum employee thresholds, early termination fees, and workers’ comp audit adjustments — can look very different. General contractors are particularly exposed here because seasonal workforce fluctuation is the norm, not the exception.
The Strategy Explained
Many PEO contracts include a minimum employee count below which you still pay a floor fee. If your crews thin out in winter and you drop from 25 to 14 employees for three months, you may still be paying for a larger headcount than you actually have. Firms at the 15-employee threshold face similar challenges when evaluating whether a PEO makes financial sense during lean periods.
Model the annual cost across your actual headcount range — your peak summer number and your slow-season floor. A practical PEO cost forecasting approach can help you build realistic projections. Factor in any minimum thresholds in the contract. Add early termination fees if you’re evaluating what it would cost to exit the relationship. And ask specifically how workers’ comp audit adjustments work at year-end: if your actual payroll comes in higher or lower than projected, what happens?
Implementation Steps
1. Map your expected monthly headcount for the next 12 months, including your realistic high and low points.
2. Ask each PEO to show you the contract minimum employee threshold and what you pay if you fall below it.
3. Request the full early termination clause in writing and calculate what it would cost you to exit at month three, six, and twelve.
4. Ask how workers’ comp is reconciled at year-end — whether there’s an audit adjustment process and who bears the risk of a true-up.
Pro Tips
Build a simple spreadsheet that models three scenarios: your average headcount, your peak, and your trough. Run each scenario through the PEO’s pricing structure. The gap between scenarios will tell you how much pricing risk you’re carrying with a particular provider’s contract terms.
7. Negotiate a 90-Day Operational Trial Before Locking In Long-Term
The Challenge It Solves
A PEO can look excellent on paper and underperform in practice. Payroll runs late. Certified payroll reports have errors. The safety consultant assigned to your account has never set foot on a construction site. You won’t know any of this until you’re actually operating inside the relationship — and by then, you may be locked into a multi-year contract with a painful exit.
The Strategy Explained
Not every PEO will agree to a short initial contract, but many will negotiate one if you ask directly. A 90-day initial period with defined performance criteria gives you a real-world test before you commit to a longer arrangement. The criteria should be specific to your operation: payroll accuracy rate, certified payroll report turnaround time, workers’ comp certificate issuance speed, and responsiveness of your dedicated account manager. Firms that eventually grow to 50 employees often find that the trial period they negotiated early on gave them the confidence to scale within the PEO relationship.
If a PEO won’t negotiate any flexibility on contract length, treat that as a signal. A provider confident in their service quality has less reason to lock you in than one that knows the first 90 days are when clients discover the gap between the sales pitch and the actual product.
Implementation Steps
1. Define three to five specific, measurable KPIs before you sign: payroll accuracy, report turnaround times, response time for compliance questions, and certificate issuance speed.
2. Ask the PEO to agree to a 90-day review clause where you can exit without penalty if defined performance thresholds aren’t met.
3. Document the implementation timeline in the contract: when payroll will be live, when benefits will be effective, when safety program materials will be delivered.
4. Assign an internal point person on your team who tracks PEO performance against the KPIs throughout the trial period — don’t leave this to informal observation.
Pro Tips
Use the negotiation around contract length as a diagnostic tool. How the PEO responds to a reasonable request for a short initial commitment tells you a lot about how they’ll respond to problems once you’re a client. Flexibility in negotiation often predicts flexibility in the relationship.
Putting It All Together
Picking a PEO at 25 employees isn’t about finding the cheapest option or the biggest brand name. It’s about finding a provider that actually understands how a general contracting business operates — the class code complexity, the seasonal swings, the certified payroll requirements, the jobsite safety reality.
Start with your risk profile and workers’ comp structure. That’s where the biggest dollars are, and it’s where the most confusion tends to live. Then validate payroll capabilities against the specific complexity of your work before you assume the platform can handle it. Benchmark benefits independently. Get safety responsibilities in writing. Model the full annual cost across your actual headcount range, not just the average. And if you can negotiate a short initial contract, do it.
The sequence matters. Don’t let a compelling benefits pitch or a smooth sales conversation pull you past the fundamental questions about workers’ comp pricing transparency and payroll capability. Those are the operational foundations. Everything else is secondary.
If you’re comparing PEO providers and want a clear side-by-side breakdown of pricing, contract terms, and construction-specific capabilities, PEO Metrics can help you cut through the noise. Don’t auto-renew. Make an informed, confident decision.
