Notice of Cancellation on a COI: What the Certificate Promises, and the Endorsement That Reaches You
Most subcontracts require 30 days' notice of cancellation, and most GCs assume the certificate gives it to them. It doesn't. The certificate defers to the policy, the policy owes notice to the sub, and the best-known endorsement, CG 02 24, only gives the sub more days. This guide covers what each document actually promises, the endorsement that puts you on the notice list, and what notice will never catch.
A certificate of insurance gives the certificate holder no right to notice of cancellation: the ACORD 25 says notice "will be delivered in accordance with the policy provisions", and a standard policy owes notice only to its first named insured, the sub. CG 02 24 lengthens that notice to the sub; it doesn't add you. To be told yourself, you need an endorsement that names you in its schedule, with your address, the number of days your contract requires, and notice for any reason. Even then, track every policy's expiry date: notice doesn't cover everything.
In this guide
What the certificate's cancellation box says
The Cancellation box sits at the bottom right of the ACORD 25, next to the certificate holder. Its wording changed in 2009, and a lot of contract language and advice still describes the old version:
| ACORD 25 edition | What the box says | What it means for you |
|---|---|---|
| 2009/01 and earlier | The insurer "will endeavor to mail __ days written notice to the certificate holder", but failure to do so "shall impose no obligation or liability of any kind" | A number of days, attached to a promise to try. Missing the notice cost the insurer nothing |
| 2009/09 onwards (current) | Should any of the policies be cancelled before the expiration date, "notice will be delivered in accordance with the policy provisions" | No days, and no promise of its own: you get whatever the policy gives you, which is usually nothing |
The change made the certificate honest rather than weaker: the old wording looked like a 30-day promise and wasn't one. It also means an agent can't fix the gap by typing "30 days' notice" onto the certificate. The certificate states that it confers no rights and doesn't amend the policy, and New York's insurance regulator has said an agent may not add terms to a certificate that expand the policy. A certificate that promised notice the policy doesn't give would itself be an unfiled policy form.
So the question isn't what the certificate says. It's what the policy says, and who it says it to. The COI audit checklist covers the rest of the boxes on the same form.
Who the policy owes notice to
Commercial policies built on ISO forms share a set of Common Policy Conditions (IL 00 17), and its Cancellation condition answers the question. The insurer cancels by sending written notice to the first named insured: the first company named on the declarations page, which on a sub's policy is the sub. The standard periods are at least 10 days before cancelling for nonpayment of premium and 30 days for any other reason, and many states change those periods with their own endorsements.
Nobody else is on that list. Not the certificate holder, and not an additional insured. Some insurers send copies as a courtesy; nothing in the standard policy requires it.
The insurer cancels
Notice goes to the sub. 10 days for nonpayment, 30 for other reasons in the standard conditions.
The sub cancels
The sub tells its insurer in writing. Nothing in the standard policy tells anyone else.
The policy expires
A policy that runs to its end date isn't cancelled at all, so no cancellation notice applies.
CG 02 24: more days, same recipient
CG 02 24, Earlier Notice of Cancellation Provided by Us, is the ISO general liability form most people mean by "notice of cancellation endorsement". Its working sentence is short: for any statutorily permitted reason other than nonpayment of premium, the number of days required for notice of cancellation, "as provided in paragraph 2. of either the CANCELLATION Common Policy Condition or as amended by an applicable state cancellation endorsement", is increased to the number of days in its schedule.
Paragraph 2 is the insurer's notice to the first named insured. So CG 02 24 gives the sub more warning. Its schedule has one box, the number of days, and no place for your name.
| CG 02 24 | What it does |
|---|---|
| Changes | The number of days before the insurer can cancel, for reasons other than nonpayment |
| Doesn't change | Who gets the notice: still the first named insured |
| Doesn't change | Nonpayment: still the standard period, or the state's |
| Doesn't apply to | The sub's auto, workers' comp or umbrella policies; it's a general liability form |
That's why a sub can send a CG 02 24 in good faith, your contract can say "30 days' notice of cancellation", and you can still hear nothing when the policy is cancelled. The form is worth having, because a sub with more warning has more time to replace coverage. It just isn't notice to you.
An endorsement that names you
Notice to a third party comes from a different kind of form, usually the carrier's own. The titles vary: Notice of Cancellation to Third Parties, Notification to Others of Cancellation, Notice of Cancellation to Designated Person or Organization. There's no single standard number to ask for, so read what's on the page. These are the checks:
| Check | What to look for | The gap if it's wrong |
|---|---|---|
| Name | Your exact legal entity in the schedule, and the owner too if your prime contract requires it | Notice goes to someone else, or to no one |
| Address or email | Where notice is sent, current and read by someone | Notice sent correctly and never seen |
| Number of days | At least what your subcontract requires, often 30 | A 10-day form meets no 30-day requirement |
| Reasons | Notice for any cancellation, not only one cause | A form limited to nonpayment says nothing about the others |
| Policy | One for each line your contract requires: general liability, auto, workers' comp, umbrella | Notice on general liability only, while workers' comp lapses |
| Last sentence | Some forms say that failing to send notice doesn't affect the cancellation | The insurer misses the notice and the policy is still cancelled |
Not every carrier offers one, and some only on certain lines. If your sub's carrier won't, the answer is in the contract and in your tracking, below. The same endorsement pages usually carry the other requirements in your insurance exhibit, from CG 20 10 and CG 20 37 to the waiver of subrogation, so ask for them together.
What notice won't catch
A perfect notice endorsement still only covers the insurer cancelling a policy partway through its term. The other ways a sub ends up uninsured on your job send no notice at all:
- The policy runs out. Expiry isn't cancellation. A policy that ends on its date and isn't renewed triggers no cancellation notice to anyone.
- The sub cancels. Whether a third-party notice form covers a cancellation the sub asks for depends on its wording, and many don't.
- The renewal comes back different. Lower limits, a different carrier, or your endorsements dropped. Nothing is cancelled, so nothing is sent.
- The notice goes nowhere. An old address, a departed employee's inbox, a letter that sits in the office while the crew is on site.
So treat notice as a backstop. What actually keeps a sub covered is knowing every policy's expiry date, asking for the renewal certificate before it, and a subcontract that makes the sub tell you about any cancellation, non-renewal or change. The subcontractor insurance requirements guide puts that clause alongside the rest of the exhibit.
How to require it and check it
Write the duty into the subcontract
Require the sub to tell you in writing, within a set number of days, of any cancellation, non-renewal or reduction in coverage, whoever starts it. That covers the cases no endorsement does. Have your attorney set the wording once.
Ask for notice to you, not just more days
Require an endorsement naming you as the party to receive notice, on each line you require, with at least your contract's number of days. Accept a CG 02 24 as well, not instead.
Read the schedule
Your legal name, the right address or email, the number of days, and whether it covers any cancellation or only some.
Track every expiry date
General liability, auto, workers' comp and umbrella often renew on different dates. Request the renewal certificate before each one, not after.
Check again at renewal
Notice endorsements drop off when a policy renews or moves carriers. Ask for the endorsement pages with every renewal certificate.
Expiry dates are the part notice can't do for you. Automated expiration alerts go out before each policy runs out, to your team and to the sub, and insurance endorsement verification reads the endorsement pages that arrive with the certificate.
How TrackMyVendor automates this
- Every coverage row on the certificate is read: carrier, policy number, limits and the dates each policy runs.
- Alerts at 90, 60, 30 and 7 days before each policy expires, to your team and to the sub, whose copy carries the upload link for the renewal. Starter
- Notice of cancellation endorsements are read with their number of days, and a CG 02 24 is marked as notice to the sub, not to you. Pro
We track the dates on the documents you're sent. We aren't told when an insurer cancels a policy partway through its term, so the notice itself still has to reach you.
See how endorsement verification worksKnow when a policy runs out, before it does
Subs and vendors upload the certificate and endorsement pages through one link — no account, no portal. Every policy is read and tracked on its own dates. Your first 25 contractors are free.
Frequently asked questions
Does a certificate of insurance guarantee notice of cancellation?
What is the CG 02 24 endorsement?
Who gets notice when a policy is cancelled?
Can an insurance agent add 30 days' notice to the certificate?
If my sub cancels their own policy, will I be told?
This guide explains how notice of cancellation commonly works. It isn't insurance or legal advice: form editions, carrier wording and state cancellation laws differ, and the policy and your contract govern. Ask your broker and attorney about your own requirements.
Insurance on a sub’s certificate
What to require from every sub, one term at a time.
Subcontractor insurance requirements: start here → Coverage, minimums and endorsements to require from subs, with every term below in one table