Primary and noncontributory means your general liability policy pays first on a claim tied to your work, and your general contractor's (GC) own policy does not have to chip in. It is one line of wording added to your policy by an endorsement (a one page change), and most insurance companies add it at no separate charge. Who this is for: subcontractors reading those four words in a subcontract or on a certificate request for the first time.
The short version
- "Primary" means your policy pays first. "Noncontributory" means your insurance company cannot ask your GC's insurance company to share the cost.
- It only works alongside the other thing your GC asked for: the page that lets them use your policy if they get sued over your work. Without that, the words do nothing.
- Most insurance companies add it at no separate charge once that page is on the policy.
- It shows on your certificate as a line of text, not a check box. Your GC will likely ask for the policy page too.
- It takes one to three business days to add. Send the request the day you get the contract.
Why does my GC care who pays first?
Additional insured means your GC can use your general liability policy if they get sued because of your work. Say your crew drops a beam and a passerby is hurt. The passerby sues everyone on site, including the GC. The GC hands the claim to your insurance company.
Here is the problem. The GC has its own general liability policy too. Without the extra wording, whether the two policies share the cost depends on the fine print in both of them, and the two insurance companies often argue about it for months. The GC's policy can get dragged in, the GC pays its deductible (the part of a claim it pays out of its own pocket), and the claim lands on the GC's record.
Primary and noncontributory settles the argument in advance. Your policy goes first. Your insurance company cannot ask the GC's insurance company to chip in.
What does each word mean?
| Word | Plain English | What it stops |
|---|---|---|
| Primary | Your policy pays first | Your insurance company asking the GC's policy to pay part of the claim from the start |
| Noncontributory | Your insurance company cannot demand a share from the GC's insurance company | The GC's policy, deductible, and claims record being touched |
| Together | Your policy stands alone for a claim caused by your work | A long fight between two insurance companies while the GC waits |
| How it is added | Endorsement CG 20 01, "Primary and Noncontributory, Other Insurance Condition," or the same wording built into your additional insured endorsement | The standard policy's "other insurance" rule, which can leave the two policies sharing the cost |
Does this wording work by itself?
No. It only sets the order of payment for someone who already has coverage under your policy, and that someone is the additional insured. If your GC is not one, the wording has nobody to apply to. Always pair the two. See what an additional insured is.
It also does not stretch your coverage. Your GC is covered only for claims that come from your work, as the additional insured endorsement spells out. The wording says who pays first, not that you pay for everything.
How do I get it added?
- Check your additional insured endorsement first. Many blanket versions already include the primary wording. Your broker can tell you in minutes. See how to check.
- If it is missing, ask your broker to add it. Send the insurance section of the subcontract and the GC's legal name. It usually issues in one to three business days.
- Ask about the charge. Most insurance companies add it at no separate cost. A few charge a small flat fee, illustratively $0 to $100. See does it cost extra.
- Send the GC proof. A certificate with the wording on it, plus a copy of the endorsement page.
How does it show up on my certificate?
There is no check box for it. Primary and noncontributory appears as a line of text in the "Description of Operations" box near the bottom of your certificate, usually alongside additional insured and waiver wording. That text only says the endorsement exists. It is not proof, and most GCs now ask for the endorsement page as well. More at primary and noncontributory on a certificate.
Should I agree to it?
Usually yes. It is standard in construction, and most insurance companies issue it without fuss. Two cautions. First, confirm your policy can carry it before you sign, because agreeing to wording your policy does not have means you have broken the contract on day one. Second, if the contract asks for it on every policy, ask your broker which ones can carry it. Your umbrella (a second layer of coverage above your other liability policies) usually follows the policy under it, but confirm.
What this looks like in real life
Illustrative example. It is typical of what we see and is not a promise of how any specific situation would be handled.
The setup: A plumbing subcontractor in New York signs a $95,000 subcontract on a restaurant fit out. The subcontract asks for additional insured status with primary and noncontributory wording. The sub's policy has a blanket additional insured endorsement, but that form has no primary wording, and nobody checks.
What went wrong: A delivery driver slips on water from a pipe the sub's crew left uncapped and sues the GC and the sub. The sub's insurance company accepts the GC as an additional insured, then spends months arguing with the GC's insurance company over how much each policy owes.
What it cost: The GC's policy paid part of a $140,000 settlement and the GC spent its $10,000 deductible. The GC billed the sub back $10,000 under the subcontract (a back charge) for failing to carry the required wording, and dropped the sub from its bid list.
The fix: Additional insured without primary and noncontributory is a half answer. Have your broker confirm both are on the policy, and send the GC the endorsement page, before the first day on site.
Frequently asked questions
Q: My GC says my general liability must be primary and noncontributory. What does that mean?
It means your policy pays first on a claim tied to your work, and your GC's own policy does not have to chip in. It is a line of wording added by an endorsement, and it only works when your GC is also an additional insured on your policy.
Q: Is this the same as letting my GC use my policy?
No. That is a separate page: it lets your GC use your policy for claims tied to your work. Primary and noncontributory says your policy goes first. You need both.
Q: Does it cost extra to add?
Usually not. Most insurance companies add it at no separate charge when the additional insured endorsement is already on the policy. A few charge a small flat fee (illustratively $0 to $100).
Q: Does this make me responsible for the GC's own mistakes?
No. Your GC is covered under your policy only for claims that come from your work, as the additional insured endorsement spells out. The wording changes who pays first, not what is covered.
Q: How long does it take to add?
Usually one to three business days. If your additional insured endorsement already includes the wording, there is nothing to add and your certificate can go out today.
Q: Where does it show on my certificate?
In the Description of Operations box near the bottom, as a line of text. There is no check box for it. Most GCs will also ask for a copy of the endorsement page.
How Morrow helps
Morrow is a licensed independent commercial insurance brokerage that works with contractors and trades every day. Translating a GC's insurance requirements into plain English, then confirming the policy actually has the wording, is the first thing we do on every contract review.
- Free contract review. Send us the contract or bid documents and we mark up the insurance section in plain English, whether or not you buy anything from us.
- Free, instant certificates. Clients issue their own certificates of insurance online in about a minute, any hour, any day, at no charge.
- Markets you cannot reach online. One application, shopped across many insurance companies for general liability, workers comp, auto, umbrella, and pollution coverage.
One more thing. This article is general information and is not legal advice or a statement of coverage. Your contract and your policy wording control in every case. Requirements vary by customer, by state, and by insurance company, so have a licensed advisor review your own contract and your own policy before relying on any of it.
Last updated: Reviewed by the Morrow commercial lines team. Last updated September 2026.