Read past the scope and the price of almost any commercial or construction contract and you'll find the same quiet demand: you agree to assume someone else's liability. It's in the hold-harmless clause, the indemnification section, the additional-insured requirement. Sign it, and you've taken on risk that has nothing to do with your own negligence — risk that's only as real as the insurance standing behind it.
That assumed risk is contractual liability, and it's one of the most consequential — and least understood — things a business agrees to. Here's what it is, how your coverage backs it, and the two places it quietly falls apart.
What contractual liability actually is
Contractual liability is liability you take on by agreement rather than by fault. Normally you're responsible for harm you cause. Under an indemnity clause, you also agree to be responsible for harm someone *else* is involved in — to "hold them harmless" and cover their losses arising out of your work.
A general liability policy handles this in a specific way. The GL form first excludes liability assumed under a contract — then gives much of it back for what it calls an "insured contract." Most ordinary business agreements (leases, subcontracts, service agreements) qualify as insured contracts, so the indemnity you signed is backed by your GL's contractual-liability coverage. That giveback is the entire reason hold-harmless clauses function: the promise you made is supposed to be insured.
When the coverage is there and the exclusions don't bite, the risk transfer works. When it isn't, you've made a promise with nothing behind it.
The flavors of indemnity
Not all indemnity clauses ask for the same thing, and the difference decides how much you're assuming:
- Limited (comparative) form — you cover losses to the extent of *your own* fault. The narrowest and fairest.
- Intermediate form — you cover the loss as long as you were *partly* at fault, even for the other party's share.
- Broad form — you cover the loss *even when the other party was entirely at fault.* The broadest, and in many states restricted or unenforceable (especially anti-indemnity statutes in construction).
The clause you sign determines which of these you're on the hook for — and whether your coverage can even back it, since some broad-form assumptions fall outside what the policy will insure.
Contractual liability vs. additional insured
These two travel together in contract requirements, so they're easy to blur:
- Contractual liability covers the indemnity you assume — your promise to answer for a loss.
- Additional-insured status extends your policy to cover the other party directly as an insured on your policy.
A well-drafted subcontract usually asks for both. And both depend on the same thing: the underlying policy actually responding. Naming a general contractor as additional insured is worthless if the policy won't pay. For how that side works, see certificate of insurance vs. additional insured.
Where contractual liability shows up
Three places account for most of it:
- Construction subcontracts — the richest source. GCs push liability down to subs through indemnity and additional-insured requirements, backed by the subcontractor's GL. See business insurance for contractors and general contractor insurance.
- Commercial leases — tenants routinely indemnify landlords for claims arising from the leased space.
- Vendor and service agreements — the party providing the service assumes liability for claims tied to it.
In each, the business signing is agreeing to carry risk it doesn't fully control — which is exactly why the coverage behind the promise matters so much.
Where it falls apart — the two traps
Contractual liability is powerful when it works and dangerous when it doesn't. Two failures account for most of the damage:
1. An exclusion quietly removes the coverage you promised
The most important example in construction is the action over exclusion on a general liability policy. It removes coverage for bodily injury to an employee of the insured — *including the liability the insured assumed by contract* to indemnify a third party for that injury. Sign an indemnity in favor of a GC, name them additional insured, and if your GL carries this exclusion, the coverage you promised can simply not be there when the claim comes. It's the single most dangerous gap in contractor insurance, and it has to be found and bought back before you sign. We break it down in the action over exclusion.
2. You can't prove the coverage the way the contract demands
The second obligation in every contract is proof. You can have perfect coverage and still lose the job over the form it's shown on — most notably with workers' compensation in New York, which doesn't accept an ACORD certificate and requires its own form instead. See Form C-105.2: New York's workers' comp proof requirement.
How to line it up
Before you sign anything with an indemnity clause:
1. Read the indemnity and insurance sections together — understand what you're assuming and what proof you're promising. 2. Check the indemnity's form — limited, intermediate, or broad — and whether your state restricts it. 3. Confirm your GL actually backs it — specifically, check for an action over or employee-injury exclusion and get it removed or bought back. 4. Line up additional-insured status with the right endorsement, not just a certificate. 5. Order the correct proof for every coverage and jurisdiction — including the right workers' comp form.
Our approach
At Cory Washington & Co., we treat the contract and the coverage as one problem, because they are. We read the indemnity and insurance language before you sign, confirm your general liability actually backs what you're assuming, line up additional-insured status properly, and make sure you can prove the coverage the way the contract and the jurisdiction require. The goal is simple: the liability you promised to carry is liability your policy will actually answer for.
Lining up a contract, or not sure what your current policy backs? Request a quote or a policy review and we'll read the fine print with you.
Frequently Asked
What is contractual liability in insurance?
It's liability you take on by agreement rather than by your own negligence. A general liability policy excludes liability assumed under a contract, then gives much of it back for what it calls an "insured contract" — which most ordinary business agreements qualify as. So when you sign a hold-harmless or indemnification clause, your GL's contractual-liability coverage is what's supposed to respond to the liability you assumed.
Is contractual liability automatically covered by general liability?
Partly, and with limits. Standard GL covers liability assumed under an "insured contract," which captures typical indemnity clauses — but endorsements can narrow or remove it, and some assumed liability falls outside the insured-contract definition. The single most dangerous example in construction is the action over exclusion, which can strip coverage for exactly the liability you promised a general contractor. Always confirm the coverage is actually there before you sign.
What's the difference between contractual liability and additional insured?
They work together but aren't the same. Contractual liability covers the indemnity you assume — your promise to answer for a loss. Additional-insured status extends your policy to cover the other party directly as an insured. A well-drafted contract usually asks for both, and both depend on the underlying policy actually responding — naming someone as additional insured means nothing if the policy won't pay.
This article is general information for business owners, not insurance or legal advice, and does not bind or alter coverage. Policy terms, eligibility, and pricing vary by carrier and state — confirm specifics with our licensed team before making decisions.