Primary and non contributory is about the order of payment, not the amount of coverage. Primary means your policy pays first. Non contributory means your insurer cannot ask the other party's insurer to share. It comes from an endorsement, and the certificate only reports it, usually as a line of text in the Description of Operations box. Who this is for: anyone whose contract uses those four words.
The short version
- Primary and non contributory is endorsement wording, not a check box on the certificate.
- It is routine on general liability and auto, and usually free.
- Most professional liability carriers will not provide it at any price.
- Without it, two insurers can share a loss and the other party's deductible gets paid.
- Agreeing to it in a contract when your policy cannot deliver it puts you in breach.
What each half does
| Term | Plain English | What it prevents |
|---|---|---|
| Primary | Your policy responds first | Your insurer arguing the other party's policy should share from dollar one |
| Non contributory | Your insurer cannot demand contribution | The other party's insurer being dragged in and their deductible being spent |
| Together | Your policy stands alone for the covered claim | The other party's limits and loss history being touched at all |
How it shows up on the certificate
There is no dedicated box. It appears as free text in the Description of Operations, usually reading something like: the general liability policy includes blanket additional insured, primary and non contributory, and waiver of subrogation wording per forms on file. That text is a report. The endorsement is the thing.
A reviewer who cares will ask for the form. That is a reasonable request and your broker can supply it.
Where it is available and where it is not
- General liability: Routine. Standard industry forms exist and carriers add them without fuss.
- Commercial auto: Routine, usually added alongside additional insured wording.
- Workers compensation: Available, though carriers sometimes charge a small premium.
- Professional liability: Usually unavailable. Most carriers in this class will not add additional insureds or primary wording at all.
- Umbrella: Should follow the underlying policy, but confirm rather than assume.
What to do when a contract demands it on every policy
- Send the clause to your broker before signing.
- Get confirmation in writing of which policies can carry the wording.
- For the ones that cannot, ask the client to limit the requirement to general liability and auto. This is a common and usually accepted amendment.
- Get the endorsement issued effective on or before the start date.
- Keep the endorsement with the signed contract.
Related reading: primary and noncontributory.
What this looks like in practice
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 facilities vendor signs a national account agreement requiring additional insured status with primary and non contributory wording on all policies including professional liability.
What went wrong: The general liability endorsement was issued in a day. The professional liability carrier declined, as most do, and nobody noticed until a compliance audit twelve months in.
What it cost: The vendor was technically in breach for a year and had to renegotiate the clause under pressure rather than during the original negotiation.
The fix: Have the broker read the insurance clause before signature and narrow the requirement to the policies the market actually endorses.
Frequently asked questions
Q: What does primary and non contributory mean?
That your policy pays first and your insurer cannot ask the other party's insurer to contribute. The other party wants their own policy, deductible, and loss history kept out of any claim from your work.
Q: Is it shown on the certificate?
Only as text in the Description of Operations box. There is no dedicated check box, and the text is a report of an endorsement rather than the endorsement itself.
Q: Does it cost extra?
On general liability it is usually free or nominal, particularly where blanket additional insured wording already exists. Workers compensation sometimes carries a small charge.
Q: Can I get it on professional liability?
Rarely. Most professional liability carriers will not add it. The usual fix is amending the contract so the requirement applies to general liability and auto.
Q: What happens without it?
Insurers can share the loss pro rata, which means the other party's policy is drawn into a claim caused by your work, spending their deductible and marking their loss history.
Q: Does my umbrella need it too?
If the contract requires the wording on excess layers, yes. Umbrellas usually follow the underlying policy, but confirm it rather than assuming, especially with a different carrier.
How Morrow helps with certificates of insurance
Morrow is a licensed independent commercial insurance brokerage that specializes in certificates of insurance and the endorsements behind them. Getting primary and non contributory wording issued where it is available is the kind of thing we handle every day, for clients across construction, trades, professional services, trucking, real estate, and hospitality, so we know what a compliance reviewer will reject before you send it.
- We issue certificates the same day you ask, and usually within the hour.
- We read the contract first, so the endorsements the certificate reports actually exist on your policy.
- We push back on requirements the market will not issue, and give you language your client will accept.
- We keep a record of who was issued what, so renewals go out before anyone chases you.
Get in touch and we will see how we can help. Send us the contract or the certificate request and we will tell you what your current policy can support and what needs to change. Start at morrowinsure.com or reach the team through the contact options on that page.
One more thing. This article is general information and is not legal advice or a statement of coverage. Certificates report what a policy says, and the policy wording controls in every case. Forms and requirements vary by carrier, by state, and by contract, so have a licensed advisor review your own policy and your own contract before relying on any of it.
Last updated: Reviewed by the Morrow commercial lines team. Last updated August 2026.