Contractual liability in insurance is a financial obligation you voluntarily take on by signing a contract that promises to cover another party’s losses or legal costs, even when those losses aren’t the result of your own negligence. Ordinary liability comes from something you did; contractual liability comes from something you signed. A standard Commercial General Liability (CGL) policy can pay these obligations, but only when the agreement meets the policy’s definition of an “insured contract” and no endorsement has stripped that coverage away.
Liability You Agreed To vs. Liability You Caused
General liability flows from tort law: cause harm through carelessness and you pay for it, contract or no contract.1Cornell Law Institute. Tort Contractual liability works on a different trigger. It doesn’t ask who caused the injury. It asks who signed a document agreeing to pay for it.
A subcontractor can sign an agreement promising to cover the general contractor’s legal costs when a worker is hurt on-site, even if the general contractor’s own negligence contributed to the accident. Without that contract, the subcontractor would owe nothing for someone else’s mistake. The signature is what creates the exposure.
Insurers draw the same line. In coverage terms, “assumed liability” refers to the liability of a third party that the policyholder agreed to shoulder through an indemnification or hold harmless provision. It does not refer to the ordinary obligations a business takes on just by entering a contract.
Indemnity and Hold Harmless Clauses
The language that creates contractual liability almost always lives in an indemnity or hold harmless clause. An indemnity clause is a written promise by one party (the indemnitor) to compensate another (the indemnitee) for specified losses or damages.2Legal Information Institute. Indemnify It usually names the types of claims that trigger the obligation, such as bodily injury or property damage to third parties, and often requires the indemnitor to pay the indemnitee’s legal defense costs on top of any settlement or judgment.
Hold harmless language frequently appears in the same paragraph. Many courts treat the two phrases as interchangeable, though hold harmless more specifically signals that one party waives the right to sue the other for certain incidents during the contract’s performance. The practical effect is identical: financial exposure moves from the party who would otherwise bear it to the party who contractually accepted it. Courts enforce these provisions strictly, and vague drafting tends to get read against the party trying to shift risk.
Three Forms of Indemnity Clauses
Not all indemnity clauses move the same amount of risk. Three tiers are generally recognized, and the form you sign determines how much you might owe.
- Broad form: the indemnitor covers all losses regardless of fault, including situations where the indemnitee was entirely to blame. This is the most aggressive risk transfer and the version most frequently targeted by state legislation.
- Intermediate form: the indemnitor covers losses unless the indemnitee was solely at fault. One percent of blame on the indemnitor’s side triggers the full obligation.
- Limited form: the indemnitor covers losses only to the extent of their own negligence. A party 30 percent at fault pays 30 percent. Every state permits this form.
The form isn’t always obvious at a glance. Phrases like “regardless of fault” or “whether caused in whole or in part by” the other party’s negligence typically signal broad or intermediate form clauses.
How a CGL Policy Covers Contractual Liability
Businesses rarely plan to pay contractual liability claims from their own cash. They expect their CGL policy to fund the obligation. The standard CGL form, based on Insurance Services Office (ISO) form CG 00 01, handles this through a two-step mechanism: it first excludes all liability assumed under any contract, then adds coverage back for liability assumed under an “insured contract.”3ABA Insurance Services. General Liability Coverage Part – Policy Specimen Two conditions apply: the bodily injury or property damage must occur after the contract was signed, and the agreement must fit the policy’s definition of an insured contract.
When those conditions are met, the policy pays both the settlement or judgment and the cost of defending the lawsuit, up to policy limits. Standard CGL limits are typically $1,000,000 per occurrence and $2,000,000 in aggregate.4ABA Insurance Services. Commercial General Liability Coverage Summary
What Qualifies as an Insured Contract
The CGL form automatically recognizes six categories of agreements as insured contracts, with no special endorsement required.3ABA Insurance Services. General Liability Coverage Part – Policy Specimen The first five cover specific business arrangements:
- A lease for the premises your business occupies.
- A sidetrack agreement with a railroad covering rail spur access.
- An easement or license agreement, excluding construction near railroads.
- An obligation required by local ordinance to indemnify a municipality, such as a sidewalk maintenance agreement.
- An elevator maintenance agreement.
The sixth category is the one that matters most in practice. It covers any other contract in which you assume the tort liability of another party for bodily injury or property damage to a third person, as long as the contract pertains to your business. “Tort liability” here means liability that would be imposed by law even without a contract, essentially negligence claims. Breach-of-contract exposure, like missed deadlines or failure to meet specifications, is not tort liability and is not covered.
Two carve-outs apply inside this sixth category. The provision cannot be used to cover indemnification of a railroad for injuries arising from construction within 50 feet of railroad property. It also excludes indemnification of architects, engineers, or surveyors for liability arising from their professional services, including design work, drawing approvals, and field instructions. Those professional-services claims generally require separate Errors and Omissions coverage.
The Endorsement That Quietly Removes Coverage
Contractual liability coverage can disappear without the policyholder noticing. Insurers sometimes attach endorsement CG 21 39, titled “Contractual Liability Limitation,” which removes the sixth category from the insured contract definition.5Independent Insurance Agents of Texas. Contractual Liability Limitation – Form CG 21 39 Only the five specifically named contract types remain covered.
The effect is severe. With CG 21 39 attached, a subcontractor’s indemnity agreement with a general contractor no longer qualifies as an insured contract. A service provider’s hold harmless clause in a maintenance agreement doesn’t either. The business has made the contractual promise, but the policy won’t fund it. That gap falls straight to the company’s own books.
This endorsement sometimes gets added at renewal when an insurer wants to reduce exposure on a riskier account. Reviewing the endorsement schedule each renewal and confirming that paragraph f of the insured contract definition is still intact is the only reliable way to catch it.
Certificates of Insurance Are Not Coverage
A certificate of insurance is a snapshot showing that a policy exists and listing its basic terms on a given date. It does not change the policy, does not grant coverage, and does not give the certificate holder any right to make a claim. If you are the party being indemnified and all you hold is a certificate, you have proof the other side carries insurance and no direct way to reach it.
The actual protection is additional insured status, created by a specific endorsement added to the other party’s policy. Being named as an additional insured gives you a direct right to coverage under that policy for claims arising from the named insured’s work. The contractual liability framework works as intended only when the indemnity clause, the additional insured endorsement, and the underlying CGL coverage all line up.
Waiver of Subrogation
One more piece can quietly unwind the whole arrangement. Subrogation is an insurer’s right to pursue recovery from a third party after paying a claim. If a general contractor’s insurer pays a loss caused partly by a subcontractor’s negligence, the insurer can normally sue the subcontractor to recoup the payout. That lawsuit defeats the purpose of the indemnity agreement, which was to settle financial responsibility without litigation between the parties.
A waiver of subrogation endorsement, typically ISO form CG 24 04, prevents it. When added to the policy, the insurer gives up its right to pursue recovery against the parties named in the endorsement. The policyholder hasn’t waived anything personally; only the insurer’s collection right is affected. Many indemnity agreements now require both additional insured status and a waiver of subrogation together, so the insurer can’t use a back door to undo the risk allocation.
What Contractual Liability Coverage Will Not Pay
Several categories of claims fall outside this coverage no matter what the contract says. Intentional acts and criminal conduct are universally uninsurable. Public policy prohibits using insurance to fund deliberate wrongdoing, and no indemnity clause can override that principle.
Breach-of-contract damages are a different gap that catches businesses off guard. If a contractor misses a deadline and owes liquidated damages, that penalty stems from a failure to perform, not from a negligence claim by an injured third party. Standard CGL policies don’t cover it. Warranty claims, cost overruns, and similar commercial disputes fall on the same side of the line.
State Anti-Indemnity Statutes
A signed indemnity clause isn’t automatically an enforceable one. Most states have anti-indemnity statutes that limit or void certain indemnification agreements, particularly in construction, because parties with superior bargaining power were routinely forcing subcontractors to accept broad form clauses that made them financially responsible for everyone else’s negligence.
Specifics vary significantly. Some states void only broad form clauses. Others void both broad and intermediate forms, permitting only limited form indemnity. A handful extend anti-indemnity protection beyond construction into other industries, including oil and gas, where separate oilfield anti-indemnity acts may apply with their own rules. If a court voids the indemnity clause, there is no contractual liability to insure in the first place. Getting the contract right under applicable state law is the first step; the insurance is the backup, not a substitute.