Additional Insured & Waiver of Subrogation Explained

Additional insured status lets a customer use your liability policy for claims tied to your work. A waiver of subrogation stops your insurer from suing that customer to get back what it paid. Primary and noncontributory wording makes your policy pay first, without asking the customer's insurer to share. All three come from endorsements on your policies, not from the certificate. After closing, confirm that the policies you actually hold back up what your contracts promise. This guide is for new owners who keep seeing these three phrases in customer contracts, lease exhibits and certificate requests and want to know what they mean and what to check.

The short answer

Additional insured: the customer becomes an insured under your policy, usually only for claims arising from your work for them.
Waiver of subrogation: your insurer gives up its right to recover a paid claim from the customer, where you agreed to that in writing before the loss.
Primary and noncontributory: your policy responds first for that customer and does not ask the customer's own policy to contribute.
Each is usually granted or confirmed by an endorsement, either blanket (anyone you agreed in a written contract to cover) or scheduled (named parties only), and each line of coverage needs its own.
After closing, check the list of endorsements on every policy, not the certificates, against the contracts you now own.

What do these three contract terms mean in plain words?

Customer contracts, leases and general contractor agreements ask for these three items more than almost anything else in the insurance exhibit. They are related, but each does a different job.

The three common contract asks, side by side
Term	Plain meaning	Who it protects	What it does not do
Additional insured	The customer is added as an insured on your policy, usually for injury or damage caused at least partly by your work for them	The customer, when it is sued over your work	It does not cover the customer for everything, and under many forms it does not cover the customer's own sole negligence
Waiver of subrogation	After your insurer pays a claim, it agrees not to chase the customer to get its money back	The customer, against your insurer	It does not make the customer an insured or give it any coverage
Primary and noncontributory	For claims where the customer is an additional insured, your policy pays first and does not seek a share from the customer's own policy	The customer, by keeping its own policy out of the claim	It only matters if the customer is already an additional insured on your policy

A simple way to remember it: additional insured gets the customer into your policy, primary and noncontributory puts your policy at the front of the line, and the waiver keeps your insurer from turning around and suing the customer. For a deeper look at each term, see what an additional insured is and why clients ask for it and what a waiver of subrogation is.

How does each one get onto a policy?

Each item is added by an endorsement, a page that changes the standard policy. Endorsements come in two broad styles:

Blanket. The endorsement grants the item to any person or organization you agreed in a written contract to cover, usually where the contract was signed before the loss. One blanket endorsement can handle dozens of customers. See blanket additional insured.
Scheduled. The endorsement lists specific names. Anyone not on the list does not get the coverage, even if a contract promised it.

Additional insured endorsements also split by timing. Some cover only ongoing operations (while the work is happening). Claims about finished work fall under completed operations, which usually needs its own endorsement or blanket wording that expressly includes it. Contractors and installers should look for both. The difference is explained in blanket vs scheduled additional insured and additional insured endorsements explained.

Each line of coverage needs its own endorsement. A waiver on general liability does nothing for a workers' compensation claim. Here is where each item usually shows up:

Where contracts usually ask for each item
Policy	Additional insured	Waiver of subrogation	Primary and noncontributory
General liability	Very common	Common	Common
Commercial auto	Sometimes	Sometimes	Sometimes
Umbrella or excess	Contracts often require the umbrella to cover the same additional insureds	Sometimes	Sometimes
Workers' compensation	Not used in the same way (it covers your own employees)	Common, by its own endorsement. Some states set a premium charge for it, and some states restrict or void workers' compensation waivers in some contracts, so ask your broker what applies where you work.	Not applicable

On auto, the standard business auto form already gives some protection to anyone held liable for your covered driving. Many contracts still ask for an auto endorsement that names the customer (sometimes called a designated insured endorsement) or a blanket additional insured endorsement, so check the contract wording.

Carrier forms vary, so these are general patterns. Your broker can confirm which endorsements are on each policy and what they actually say.

Why do new owners need to recheck these after closing?

Because the endorsements that backed the seller's promises may not be on the policies you now hold. For a business you just financed, a missing endorsement can stall a renewal with a key customer, which shows up in revenue before it shows up in a claim.

Asset purchase. Your company usually bought new policies at closing. The new carrier may have used different endorsements, or none, so check them line by line. The seller's policies do not simply move to you; see keep the seller's insurance or start over.
Stock purchase. The same policies usually continue until renewal, but the renewal is a common moment for endorsements to change quietly. Check the renewal's list of endorsements (its forms schedule) against the expiring one.
Contracts signed by the seller. Blanket endorsements usually apply when the named insured agreed in a written contract to provide the coverage. If your company took over contracts the seller's entity signed, ask your broker to confirm in writing that the carrier treats those assigned contracts as yours, or have key customers sign updated agreements with your entity.
Certificates that do not match the policy. A certificate can show these boxes ticked even when the endorsement behind them has changed or was never added, so compare each one with the current forms schedule. See certificates the seller issued. If a carrier will not add what a contract requires, see when customer contracts require coverage you do not have.

What should I confirm on the policies I inherited?

Ask your broker for the full forms and endorsements schedule (the list of every form attached to the policy) for each policy, then work through this list:

Is there an additional insured endorsement at all? Look for titles that include "Additional Insured" in the forms list.
Blanket or scheduled? If scheduled, does the list include every customer, landlord and general contractor whose contract requires it?
Ongoing and completed operations? If your contracts require completed operations coverage, confirm the endorsement provides it, and for how long the contract requires.
Does the blanket wording need a written contract signed before the loss? Most do. Make sure the agreements are actually signed and on file.
Is there a primary and noncontributory endorsement? Many standard policies have "other insurance" wording that shares losses unless an endorsement changes it.
Is there a waiver of subrogation on each line the contract names? Check general liability, auto and workers' compensation separately.
Does the umbrella follow? Confirm the umbrella treats additional insureds the way the contract requires, if the contract counts the umbrella toward its limit.
Do the limits fit? Many current additional insured endorsements give the customer no more than the contract requires, capped at the lesser of the contract amount or your policy limit.

For a method to compare every contract at once, use the requirements matrix in how to check your customer contracts against your policies.

What do these endorsements usually not do?

They do not add limits. An additional insured shares your policy limits. A large claim involving a customer can use up limits you need for yourself.
They do not cover everything a contract promises. Many additional insured forms exclude the customer's sole negligence, and some states limit how far insurance and indemnity can go in construction contracts. Your indemnity clause and your insurance can say different things; ask counsel about the indemnity side.
A waiver given after a loss can backfire. Waivers generally need to be agreed in writing before the loss. Signing one after the fact without your insurer's agreement can hurt your own coverage.
A certificate does not create any of them. A certificate of insurance only summarizes coverage. See additional insured vs certificate holder.
They may cost money. Carriers may charge for blanket endorsements, and workers' compensation waivers can carry a premium charge set by state rules. See how much it costs to add an additional insured.

How do the three terms work when a loss happens?

A hypothetical example. A buyer acquires a commercial painting contractor whose general contractor customers require all three items. Two things happen on one job. A visitor trips over the crew's drop cloths and sues both the general contractor and the painting company for $400,000. Because the general contractor is an additional insured, the painting company's general liability carrier defends it, subject to the policy terms. Because of the primary and noncontributory endorsement, that policy pays first and does not ask the general contractor's insurer to share. Separately, one of the painters is hurt on scaffolding the general contractor set up. The painting company's workers' compensation carrier pays the benefits, and the waiver of subrogation stops that carrier from suing the general contractor to get its money back. The waiver does not stop the painter from suing the general contractor directly; whether that claim reaches the painting company's policies depends on the additional insured wording, the contract and state law. Each result depends on the endorsement being on the policy before the loss, on the policy wording and, for the waiver, on state law. The figures are illustrative only.

If the business is a contractor, completed operations matters long after the job ends; see completed operations claims from the seller's past jobs. If you want a second set of eyes, Morrow can compare your endorsements with your key contracts and list what is missing.

Keep reading

Frequently asked questions

What is the difference between an additional insured and a certificate holder?

An additional insured has rights under your policy through an endorsement. A certificate holder only receives a certificate showing your coverage and has no coverage rights. Contracts that require additional insured status are not satisfied by listing the customer as a certificate holder.

Do I need all three endorsements on every policy?

Only where your contracts require them. Read each contract's insurance exhibit. Many ask for additional insured and primary wording on general liability, and waivers on general liability, auto and workers' compensation. Blanket endorsements are often the simplest way to meet requirements across many contracts.

Does a blanket additional insured endorsement cover contracts the seller signed?

It depends on the endorsement wording and the carrier. Blanket wording usually applies where the named insured agreed in a written contract to provide coverage. Ask your broker for the carrier's written position, or have key customers sign updated agreements with your company.

Will adding these endorsements raise my premium?

It can. Some carriers include blanket endorsements in contractor programs, others charge for them, and workers' compensation waivers can carry a premium charge under state rules. Your broker can tell you the cost before you agree.

What does 'where required by written contract' mean on my policy?

It means the endorsement gives additional insured status, a waiver or primary wording only to parties you agreed in a written contract to cover. Most blanket wording also requires the contract to be signed before the injury or damage happens. A handshake deal or an unsigned purchase order may not qualify, so keep signed copies of every contract with an insurance clause on file.

References

Just bought a business? Get your insurance reviewed.

Send Morrow the declarations pages, loss runs and key contracts you inherited. Morrow can review them against the business you bought, flag gaps and request quotes where it makes sense. Any new terms depend on carrier underwriting.

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This article is general information, not legal, tax or financial advice, and not a coverage determination. Coverage depends on the actual policy wording, carrier underwriting, your purchase agreement and your contracts. Ask your attorney and accountant about deal and legal questions.

Additional Insured, Waiver of Subrogation and Primary Noncontributory