Waiver of subrogation and primary and non-contributory, in plain English

Additional insured status gets you onto the vendor's policy. Two further clauses decide whether being on it actually protects you.

Neither has a box on the ACORD 25. Both live in the description of operations field or nowhere at all, which is why most compliance programs confirm the first thing and miss these two.

Subrogation is your vendor's carrier coming after you

Subrogation is the right of an insurer, having paid a claim, to step into its insured's shoes and pursue whoever caused the loss.

Play out the sequence without a waiver. Your plumber's negligence floods three units. You tender the claim to their carrier under your additional insured status. Their carrier pays.

Then their carrier looks at who else contributed. If they can argue the property manager failed to maintain the shutoff, or delayed reporting, or shares fault in any way, they can pursue you to recover what they paid.

You tendered the claim to get it off your books. Subrogation puts it back.

A waiver of subrogation is the vendor's carrier agreeing in advance not to do that. One sentence, and it is the difference between a claim resolved and a claim relocated.

Primary and non-contributory decides whose policy goes first

Two policies can respond to the same loss. Somebody has to be first.

Without this wording, your policy and the vendor's can be treated as co-primary, and both carriers contribute. That sounds fair and it is expensive, because a contribution from your carrier is a claim on your loss run.

Your loss run drives your renewal. A loss caused entirely by somebody else's work, sitting on your history, raises your premium for years.

"Primary and non-contributory" means the vendor's policy responds first and in full, and yours does not contribute until theirs is exhausted. Which is the arrangement you thought you had when you required additional insured status.

Both usually depend on your contract requiring them

This is the part that catches programs that fixed their certificate review but never touched their vendor agreement.

Most additional insured endorsements apply "as required by written contract." The endorsement is conditional on your agreement demanding it.

The same conditionality generally applies to primary and non-contributory wording and to a blanket waiver of subrogation. If your master vendor agreement is silent, the endorsement may attach on paper and provide nothing, because the condition it depends on was never met.

So the sequence is: require it in the agreement, then verify it on the endorsement. Verifying without requiring is checking for something you never asked for.

The language worth having in the MVA

One sentence closes the gap between what most certificates show and what most programs assume:

Vendor names the property owner and manager, and their affiliates, as additional insureds on general liability, covering both ongoing and completed operations, on forms CG 20 10 and CG 20 37 or equivalent, primary and non-contributory, with waiver of subrogation, and supplies the endorsement forms on request.

That sentence does four things. It names who is covered. It covers work after completion, which is where property claims often arise. It sets the payment order. And it blocks recovery against you.

Workers compensation needs its own waiver

Separate policy, separate waiver, commonly forgotten.

If a vendor's employee is injured on your property, workers comp pays their benefits. The comp carrier can then pursue you as a third party for causing the injury, and that is a different recovery action from a general liability subrogation.

A waiver of subrogation on the workers compensation policy blocks it. Ask for it specifically. A vendor who provides one on general liability often has not thought about the comp policy.

Where to actually look on the certificate

There is no box. Read the description of operations field, every time.

The last row is the most common.

Why this fails at volume rather than at knowledge

None of this is obscure. Any risk manager knows it.

A portfolio with a few hundred active vendors, each carrying general liability, workers comp, auto, and sometimes umbrella, each renewing on its own date, produces a document stream nobody can review at 15 to 30 minutes each and stay current. Teams report 15 to 20 hours a week on this and still fall behind.

So programs degrade to checking that a certificate exists and the limits look right. That catches the obvious failures and misses endorsement scope completely.

IDCore extracts endorsements and waivers of subrogation and matches them against your per-property requirement set, flagging the specific miss rather than a generic non-compliant. When the coverage genuinely is not there, InsurePro can place it in the same flow at roughly $99 per vendor per year in 49 states, which turns a rejection into a cleared vendor rather than a stalled job.

Pull three certificates. How many mention primary and non-contributory anywhere?