Coverage Comparison for Contractors
General Liability vs Workers Comp vs Professional Liability
Three policies. Three completely different jobs. Most contractors need all three — and most claim disputes happen because the wrong policy was asked to cover the wrong loss. Here is exactly how each one works, what it pays, what it excludes, and which trades need every one.
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The Three Policies Every Contractor Confuses — And What Each One Actually Does
If you have ever stared at a stack of certificates and wondered why your premium summary lists “GL,” “WC,” and “E&O” as three separate lines, you are not alone. Most contractors lump every insurance bill into one mental bucket called “business insurance” — and then get a nasty surprise the first time a claim falls into a gap between policies. The difference between general liability vs workers comp vs professional liability is not academic. It determines whether your insurer pays the bill or whether you do. Learn more about general liability insurance for contractors or scroll down for the details on this question.
Here is the cleanest way to think about it. General liability covers harm you do to other people and their stuff. Workers’ compensation covers harm done to your own employees on the job. Professional liability (also called errors & omissions or E&O) covers harm caused by your professional advice, designs, or expertise — even when nothing physical breaks. They are completely different contracts written by different underwriting departments, often by different carriers, with different limits, exclusions, and claim processes. Carrying one does not get you the other two.
For most contractors, the practical answer is: you need GL and workers’ comp. The moment you start designing, consulting, or advising — whether that is a design-build remodeler, an HVAC engineer, an energy auditor, a home inspector who builds, or a general contractor who specs systems — you also need professional liability. Trades that touch building plans, engineering drawings, or written specifications are the most exposed and the most likely to be hit with a claim that GL and WC will both deny.
The 30-Second Rule
If a third party got hurt or had their property damaged, that is a GL claim. If your employee got hurt, that is a workers’ comp claim. If your professional advice, drawing, or recommendation caused a financial loss with no physical injury, that is a professional liability claim. When you can sort claims into those three buckets in 30 seconds, you finally understand your own insurance program.
Why This Matters at Claim Time
Insurance companies are professional readers. They scrutinize every claim against the named perils on each policy, and they reject anything that does not fit. If you submit an employee injury to your GL carrier, they will deny it — correctly — and the next call should go to your workers’ comp carrier. If you submit a faulty-design lawsuit to your GL carrier, they will deny that too, because GL excludes professional services. This is why the contractors who get burned by claim denials are almost always under-insured rather than wrongly insured. They have one or two policies when the loss needed all three.
What Each Policy Covers — Line by Line
Each policy is a different contract with different perils. Here is what the underwriter is actually agreeing to pay for when they hand you the binder.
General Liability (GL / CGL)
A GL policy responds when your business operations cause bodily injury or property damage to someone outside your company. The standard ISO Commercial General Liability form pays for medical bills, lost wages, settlements, and legal defense for claims involving:
- Third-party bodily injury on the jobsite or premises — a homeowner trips, a pedestrian is hit by debris, a building inspector falls.
- Property damage to property you do not own — you puncture a water line, scratch a customer’s hardwoods, drop a ladder through a skylight.
- Products and completed operations — the deck you finished six months ago collapses, the rooftop unit you installed leaks, the railing you welded breaks.
- Personal and advertising injury — libel, slander, copyright infringement in your marketing materials.
It excludes injuries to your own employees (that is workers’ comp), damage to your own work product (that is a faulty-workmanship issue), professional design errors, autos, intentional acts, and pollution. Limits are usually written $1M per occurrence / $2M aggregate, which is the minimum most general contractors require.
Workers’ Compensation
Workers’ comp is a no-fault statutory program. It pays for the medical care, lost wages, vocational rehabilitation, and (in the worst cases) death benefits for any employee who is injured arising out of and in the course of their employment. In exchange, the injured employee gives up the right to sue you for negligence. That trade-off is the entire basis of the system — and it is what protects your business from a five-figure ER bill turning into a seven-figure lawsuit.
Ohio is one of four states with a monopolistic state fund (BWC); the other 46 are open markets where carriers compete on rate and service. In every state, the law requires coverage from the first employee — sometimes from day one of payroll, sometimes from a low employee count threshold. Subcontractors are pulled into the policy too if they cannot show their own valid coverage. Premiums are calculated on payroll, class code, and experience modification factor (EMR).
Professional Liability (E&O)
Professional liability — sometimes called errors and omissions, contractor’s professional, or design-build E&O — pays for financial losses caused by mistakes in the professional services you provide. Unlike GL, the loss does not have to be physical. A bad recommendation, a missed code reference, an incorrect specification, a faulty calculation, or a delayed deliverable can all be E&O claims even if no one bleeds and nothing breaks.
The most common contractor claims under E&O are: design errors on design-build projects, incorrect load calculations on HVAC or electrical work, mis-specified materials that fail inspection, energy audits that overstate savings, and inspection reports that miss a defect later discovered by the buyer. If your contract uses the words “design,” “engineer,” “specify,” “consult,” “audit,” or “recommend,” you almost certainly need E&O.
Side-by-Side Comparison Table
| Feature | General Liability | Workers’ Comp | Professional Liability |
|---|---|---|---|
| Who is protected | Third parties (clients, public) | Your W-2 employees | Clients harmed by your advice |
| Triggers payment | Bodily injury or property damage | Employee on-the-job injury | Financial loss from your error |
| Typical limits | $1M / $2M | Statutory (state-set) | $250K–$2M |
| Annual cost (solo) | $600–$2,400 | Not required (no employees) | $800–$2,500 |
| Annual cost (5 employees) | $1,800–$5,200 | $3,500–$18,000 (by trade) | $1,500–$4,500 |
| Required by law? | Most state licensing boards | Yes, in nearly every state | No, but often contractual |
| Excludes | Employees, autos, faulty work, design errors | Owners (often), 1099s with COI | Bodily injury, criminal acts |
| Defense costs | In addition to limits | Statutory (paid by carrier) | Usually inside the limits |
Which Trades Need All Three?
Design-Build Remodelers
You draw the plans and build them. GL covers job-site mishaps, WC covers your crew, and E&O catches mis-specified beams, undersized circuits, or layouts that fail inspection.
HVAC Engineers / Mech Contractors
Load calcs, ductwork sizing, and Manual J reports are all professional services. Get the math wrong on a commercial RTU spec and the lawsuit is pure E&O.
Electrical Contractors w/ Design
Service calculations, panel schedules, code interpretations — if you stamp it or sign it, you can be sued on it. WC for your apprentices, GL for the building, E&O for the design.
Energy Auditors & Raters
HERS, BPI, and commercial audit reports are professional opinions. A blown number on projected savings is an E&O claim that GL will deny in a heartbeat.
General Contractors
If you write scopes of work, source subs, or commit to a schedule, your “expertise” is the deliverable. Coordination errors and schedule failures are increasingly chased under E&O.
Specialty Restoration
Mold, water, fire — you write protocols, draw moisture maps, and certify dryness. Each of those documents is a professional opinion that needs E&O behind it.
Why Trade Safe Insurance
A captive agent quotes one carrier. We quote dozens. When a single application can produce a GL, WC, and E&O bundle from three different carriers — each one the best fit for your trade — you get the right coverage at the right price the first time.
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COIs and binders for active jobs
Hard-to-Place
Roofing, demo, EIFS, prior losses welcome
Frequently Asked Questions
Do I need workers’ comp if I am the only employee?
In most states, sole proprietors and single-member LLCs without employees can opt out of workers’ comp. The moment you bring on a W-2 employee — even part-time — coverage is mandatory. Ohio’s BWC is monopolistic, so it is bought directly from the state. Owners can elect coverage on themselves; many GCs require it on every sub regardless of headcount.
Will GL cover my 1099 sub if he gets hurt?
No. GL excludes injuries to anyone classified as an employee — and most states treat uninsured 1099s as your employees for workers’ comp purposes. If you hire subs, collect a current COI from every one and verify their workers’ comp before they start. Without it, your workers’ comp carrier will audit them onto your payroll at year-end and charge you the premium.
Does professional liability replace general liability?
No. They cover completely different perils. E&O covers financial loss from professional advice or design; GL covers bodily injury and property damage. A design-build contractor needs both because a single project can produce either kind of claim — or both, when a design error causes a physical loss.
Which policy pays when an employee damages a client’s home?
If the employee is hurt, workers’ comp pays. If the client’s home is damaged, GL pays for the property damage. One incident can absolutely trigger both policies on the same day. Your agent will help you report each piece to the right carrier so neither claim falls through the gap.
What is the cheapest combination for a solo contractor?
A solo operator with no employees typically carries GL only and self-elects WC if their state allows. Expect $600–$2,400/year for $1M/$2M GL for low-hazard trades, more for roofing, demo, or excavation. If you do any design work, add an E&O policy at $800–$2,500/year. We will quote all three in one shot so you see exactly where the dollars go.
Why do GCs require all three on the COI?
A general contractor is trying to make sure their downstream liability is fully transferred to your insurance program. Asking for GL, WC, and (when applicable) E&O on the same certificate confirms that no claim category is left exposed. Refusing to provide all three usually means losing the bid.
Can I bundle them with one carrier for a discount?
Sometimes — especially for low-hazard trades through carriers like Travelers, Hartford, or Liberty Mutual. Bundling typically saves 5–15%. For high-hazard or hard-to-place trades, you almost always get a better rate by splitting policies across specialty carriers. As an independent agency, we run both scenarios and show you which one wins.
How fast can I get a quote for all three?
A complete contractor application can be turned into firm quotes inside 24–48 hours for most trades, often same day for low-hazard operations. We use one application to shop dozens of markets at once. If you have a job starting Monday, call us today and you will have a COI in hand before the kickoff meeting.
Get All Three Policies Quoted in One Phone Call
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