General Liability for Contractors: Site Risks, Subcontractors, and Completed Operations

Why Standard GL Isn't Enough — Contractors Need Construction-Specific Coverage

A restaurant owner and a roofing contractor both buy general liability insurance, but their exposures have almost nothing in common. The restaurant owner worries about a customer slipping on a wet floor. A roofing contractor worries about a worker dropping a tool through a skylight, a completed roof leaking six months after the customer pays the final invoice, or a sub-contractor's crew damaging a neighboring property. Construction GL is built for that complexity — but only if it's structured correctly from the start.

Most contractors I've seen come to me after a claim are underinsured in one of three specific ways: their subcontractor risk is unmanaged, their completed operations limit is too low, or they don't understand which exclusions apply to their trade. This article cuts through all three of those gaps.

Before diving into the mechanics, it helps to understand what contractor GL is actually designed to do. It pays for third-party bodily injury and property damage that you or your operations cause. It does not cover your employees (that's workers' compensation), your own tools and equipment (that's inland marine), or the cost to redo defective work (that's a warranty or surety issue). Understanding what the policy doesn't cover is just as important as knowing what it does.

On-Site Risks: What Happens While the Work Is in Progress

Job sites are dynamic, high-hazard environments. The premises and operations coverage section of your GL policy is what responds to incidents that occur while your crew is actively working. Here's how it plays out in practice:

• Third-party bodily injury: A delivery driver walks across your job site, trips over unsecured conduit, and breaks an ankle. Your GL pays the medical bills and any resulting lawsuit.
• Third-party property damage: Your crew is excavating a foundation and accidentally severs a neighbor's underground irrigation system. GL covers the repair cost and any claim for consequential losses.
• Advertising injury: Less common in construction, but if you use a competitor's copyrighted photo in a proposal without permission, GL's personal and advertising injury coverage may respond.

What won't be covered on-site? Employee injuries — that's your workers' comp policy's job. Damage to property you're renting or occupy under a lease typically falls under a care, custody, and control exclusion unless you add a specific endorsement. And if the incident involves pollution — a diesel spill from your excavator, for instance — the standard pollution exclusion almost certainly applies.

The premises and operations exposure is what most people think of as "liability insurance." It's real and important, but for contractors, it's often the completed operations exposure that creates the largest long-term risk.

Completed Operations: The Liability That Follows You After the Job Is Done

Completed operations coverage is the part of contractor GL that most business owners underestimate until they get a claim three years after a project closed out. Once you've completed a job and turned it over to the owner, the premises and operations coverage no longer applies — completed operations kicks in.

The trigger is simple: work is considered complete when you've finished it per the contract, when you've abandoned it, or when the portion causing injury or damage has been put to its intended use. After that point, any bodily injury or property damage your completed work causes falls under the completed operations aggregate.

This matters enormously for trades like:

• Roofers — A leak discovered two years post-installation causes mold throughout a home. The remediation costs and potential health claims hit the completed operations aggregate.
• Electricians — A wiring defect causes a fire two years after the panel was installed. Structural damage and injuries to occupants are completed operations claims.
• HVAC contractors — An improperly installed gas line causes carbon monoxide buildup a year after commissioning.
• Concrete and foundation contractors — Structural failures that emerge years later due to faulty pour or inadequate reinforcement.

Here's the critical detail: your completed operations aggregate limit is separate from your general aggregate. On a standard ISO CGL form, you typically have a $2 million general aggregate and a separate $2 million products-completed operations aggregate. If you exhaust one, you haven't touched the other. But if a single large construction defect lawsuit consumes your entire completed operations aggregate, every other completed project in that policy year is left exposed.

For major projects, many general contractors purchase extended completed operations endorsements — sometimes called "tail coverage" — that extend the completed operations period for 5 or 10 years after substantial completion. Some project owners require this in the contract. See when GL alone isn't enough for a broader look at coverage gaps that trip up contractors who assume standard policy terms are sufficient.

“The biggest mistake contractors make is treating completed operations as an afterthought. They focus on the job site risk they can see — the fall hazard, the equipment — and forget that their liability walks right out the door with every finished project.”

— Marcus Delgado, Former commercial lines underwriter, property and casualty insurance

Subcontractor Exposure: The Risk You're Taking On When You Hand Off Work

The moment you hire a subcontractor, you take on vicarious liability for what they do on your project. If their crew drops materials that injure a bystander, or their electrical work fails and starts a fire after project completion, claims can flow upstream to you as the general contractor.

Managing subcontractor risk isn't optional — it's one of the primary things underwriters evaluate when they price your GL policy. Here's what actually protects you:

Certificates of Insurance (COIs)

Require every sub to provide a current COI before they set foot on your site. A COI confirms the sub has active GL coverage and lists their limits. It's not a guarantee — a sub's policy can lapse after you receive the cert — but it establishes a baseline and shifts responsibility.

Additional Insured Status

Require subs to name you as an additional insured on their GL policy. This means their policy responds to claims against you that arise from their work. It's the difference between their insurer handling the claim first versus yours.

Indemnification Clauses

Your subcontract agreements should include mutual indemnification language requiring subs to defend and indemnify you for claims arising from their scope of work. This ties to your GL's contractual liability coverage. For a deep dive on how this interacts with your GL policy, see how indemnity clauses actually trigger GL coverage.

Minimum Limits Requirements

Don't let a $500,000 limit sub work on a multi-million dollar project. Your subcontract should specify minimum GL limits tied to the project's risk level — typically matching or exceeding your own policy's per-occurrence limit.

What happens when a sub has no insurance and causes a loss? Your GL policy may respond, but your insurer will likely pursue subrogation against the sub — and if the sub has no assets, you're left having burned through your own aggregate. Some carriers will also surcharge your renewal for claims attributable to uninsured subs.

On the underwriting side, contractors who use a lot of subcontracted labor are scrutinized more heavily. Underwriters will ask for your sub-to-employee labor ratio and may exclude or limit coverage for work performed by uninsured subs. Keep this in mind as your business scales — see how to maintain GL coverage as your business grows for practical guidance on keeping your policy aligned with your operation.

Key Exclusions Every Contractor Needs to Know

GL policies are full of exclusions that can blindside contractors if they're not read carefully. Here are the ones that matter most in construction:

The 'Your Work' Exclusion

GL does not pay to repair or replace your own defective workmanship. If you install a deck incorrectly and it collapses, GL won't pay to rebuild the deck. It will pay for the bodily injury claims from people injured in the collapse and for damage to adjacent property the collapse caused. The distinction sounds academic until you're staring at a $40,000 repair bill for faulty work and a $200,000 injury claim — one is yours to eat, the other your insurer handles.

The 'Your Product' Exclusion

Similar to the above, damage to a product you manufactured or supplied is excluded. For contractors who also supply materials, this delineation matters.

The Professional Services Exclusion

If you also provide design-build services, engineering consulting, or project management advice, the professional services exclusion can bar coverage for claims arising from those activities. Design-build contractors need professional liability (errors and omissions) coverage alongside their GL.

The Pollution Exclusion

Virtually universal in standard GL policies. Any release of pollutants — defined broadly to include fuel, chemicals, solvents, and often silica dust — is excluded. Contractors who disturb lead paint, asbestos, or handle hazardous chemicals need contractor's pollution liability as a separate line of coverage.

The Employee Injury Exclusion

GL does not cover injuries to your employees. That's workers' compensation. This exclusion is absolute — there's no endorsement that fixes it. Every contractor with payroll needs a separate workers' comp policy.

For a broader look at where GL falls short and what additional policies plug those gaps, see when general liability alone is not enough.

How Contractor GL Is Priced — and What Drives Your Premium

Contractor GL premiums are not flat rates. Underwriters price based on the actual risk characteristics of your business. Here's what they're looking at:

If you're comparing a bundled policy versus a standalone GL structure, the pricing dynamics differ. A Business Owner's Policy that bundles GL with commercial property can be cost-efficient for smaller contractors with fixed business locations, but many contractors with significant field operations are better served by a standalone GL policy with limits and endorsements tailored to construction risk. Compare both structures at GL inside a BOP vs. standalone coverage.

Building a GL Program That Actually Holds Up on a Job Site

Buying the minimum GL your license requires is not the same as having the coverage you need. Here's a practical checklist for contractors who want their policy to actually perform when a claim hits:

1. Verify your classification code is accurate. If you're classified as a general building contractor but you do specialty structural work, you may be misclassified — which could give the insurer grounds to dispute a claim.
2. Confirm you have a separate completed operations aggregate. Don't assume it's there at the same limit as your general aggregate. Read the declarations page.
3. Check whether extended completed operations coverage is needed. For large commercial projects, public works, or any project where the contract requires it, get the endorsement in writing before the project closes out.
4. Establish a subcontractor compliance program. Track COIs, additional insured status, and policy renewal dates. A COI that was valid when you hired the sub tells you nothing about whether they're still covered today.
5. Review your exclusions for trade-specific exposures. If you work near water, with chemicals, or in structures with existing hazardous materials, standard GL won't cover those exposures without endorsements or separate policies.
6. Increase limits before you need them. A $1M occurrence limit may be adequate for a kitchen remodel but dangerously inadequate on a $5M commercial build-out. Align your limits to the scale of your projects, not the minimum your state requires.

The bottom line: contractor GL is a foundational policy, but it has real edges. Knowing where those edges are — completed operations tails, subcontractor gaps, trade-specific exclusions — is the difference between a policy that protects you and one that looks good on paper until you actually need it.

For context on how personal liability differs from the business coverage described here, personal liability insurance covers individuals in their private lives — not contractors operating a business. The two don't overlap, and carrying one does not substitute for the other.