When you hire a contractor, you will often hear that you should be added as an additional insured on their policy. It sounds like paperwork. But it can decide who pays if something goes wrong on the job. This article answers a simple question: what does additional insured mean, and why does it matter to you? It also covers how it differs from being a certificate holder. This is general information, so talk to your insurance agent about your own contracts.
The Short Answer
An additional insured is a person or business added to someone else's insurance policy. Most often, that is you, added to a contractor's general liability policy. If a claim comes up because of the contractor's work, their policy can protect you too, not just them.
The contractor is the named insured. You are covered only because they added you. Even then, only within the terms of their policy.
Additional Insured vs. Certificate Holder
These two terms get mixed up a lot. The difference matters. A certificate holder is just the person who gets a copy of the certificate. That copy is proof the policy exists. Being a certificate holder gives you no coverage at all. An additional insured has rights under the policy itself.
| Certificate Holder | Additional Insured | |
|---|---|---|
| What it means | You get a copy of the proof | You are added to the policy |
| Coverage for you | None | Yes, within the policy terms |
| What makes it real | Your name on the certificate | An endorsement from the insurer |
| What to ask for | A current certificate | The certificate and the endorsement |
Why the Certificate Alone Is Not Enough
A certificate is a summary. It shows the policy was in place on the day it was issued. It does not change the policy. If a certificate says you are an additional insured and the policy was never changed, you may not be covered.
That is why many businesses also ask for the endorsement. This is the page of the policy that actually adds them, and it is the part that counts if a claim comes up.
Common Types of Endorsements
Insurers use standard forms for this. In the US, two of the most common cover ongoing work and completed work. They are often ISO forms CG 20 10 and CG 20 37. Ongoing work means while the job is going on. Completed work means after the job is done, for problems that show up later. A contract may ask for both.
Some policies use a blanket endorsement instead. It adds anyone the contractor has agreed in writing to cover, without listing each name.
How to Ask for Additional Insured Status
- Put it in the contract. Say which policies must name you, usually general liability and often auto.
- Ask before work starts. Coverage that begins after an accident will not help.
- Request the certificate and the endorsement. The certificate alone does not prove you were added.
- Check names and dates. Your business name should match, and the policy dates should cover the job.
- Ask again at renewal. When the policy renews each year, get an updated certificate.
Red Flags to Watch For
Most certificates are fine. Still, a few things are worth a second look:
- Your name is on the certificate, but no endorsement came with it.
- The policy ends before the job does.
- The business name does not match the one in your contract.
- The contractor sends last year's certificate.
None of these mean the contractor is hiding something. Mistakes happen. But each one is worth a quick call before work starts, not after a claim comes in.
A Common Scenario
A property manager hires a painting company for a stairwell. A tenant slips on a drop cloth and sues both the building owner and the painter. The manager had the painter's certificate on file, but the owner was only listed as a certificate holder. The painter's insurer covers the painter, while the owner's own policy has to deal with its share. Had the owner been added as an additional insured, the painter's policy might have covered the owner as well.
Where Software Fits In
Most of this comes down to paperwork that changes every year. A policy renews, a new certificate arrives, and someone has to check it and file it. Keep each contractor's certificates and endorsements in one place, with end dates you can see. The yearly check gets much easier. DocuStacker can hold these papers and remind you before a policy ends. Read more about keeping contractor certificates organized.
The Bottom Line
What does additional insured mean? It means you are added to another business's policy, so their insurance can protect you for claims tied to their work. Being a certificate holder is not the same thing. Put the requirement in your contract, ask for the endorsement as well as the certificate, and check it again each time the policy renews.
