What "waiver of subrogation" means, and when to require it

A waiver of subrogation stops a vendor's insurance company from suing you to get back money it paid on a claim. If your contracts ask for it and the vendor's policy doesn't include it, you can end up paying for an accident their insurer already covered.

What subrogation is

When an insurer pays a claim, it takes over its customer's right to recover that money from whoever caused the loss. That is subrogation. It is normal and usually fair: the insurer pays first, then goes after the party at fault.

On a job site, "the party at fault" is often you. Say a subcontractor's worker is hurt on your site. Their workers compensation insurer pays the medical bills and lost wages, then argues that your site conditions caused the injury and sues you for what it paid. Your own insurer defends you, the claim lands on your record, and your premiums go up.

What the waiver does

With a waiver of subrogation, the vendor's insurer agrees in advance not to come after you. The claim stays on their policy, which is where your contract meant it to be. It is one of the standard protections in construction and property contracts, along with additional insured status and primary and non-contributory wording.

It can apply to each type of coverage separately:

• Workers compensation: the most common one to ask for, because injured workers are the most common source of these lawsuits.
• General liability: covers property damage and injuries to other people.
• Auto liability: covers accidents involving the vendor's vehicles.
• Umbrella: often follows whatever the underlying policies do, but check.

Where it shows on the certificate

On an ACORD 25 there is a narrow column headed SUBR WVD next to each coverage line, beside the ADDL INSD column. A "Y" there means the agent says a waiver applies to that policy. The Description of Operations box often adds wording like "waiver of subrogation applies in favor of the certificate holder where required by written contract".

A "Y" is a good sign, but the certificate itself says it does not change the policy. The waiver only exists if the policy contains an endorsement that grants it.

The endorsement is the proof

Ask for a copy of the endorsement page with the certificate. Common forms include:

• General liability: ISO form CG 24 04, "Waiver of Transfer of Rights of Recovery Against Others to Us", or a blanket version written by the insurer.
• Workers compensation: NCCI form WC 00 03 13, "Waiver of Our Right to Recover From Others Endorsement", or a state-specific version.

When you read the endorsement, look for two things:

• Who it covers. A scheduled waiver names specific people or companies, and you need to be one of them. A blanket waiver covers anyone the vendor agreed to in a written contract, which means you need a signed contract that asks for it.
• That it is current. The endorsement should carry the same policy number and dates as the certificate.

When to require it

Most contractors and property managers ask for it from anyone who works on their site or property: trades, cleaners, landscapers, movers, event crews. It matters most where people can get hurt or property can be damaged, which is most on-site work.

A few practical points:

• Put it in the contract. Blanket endorsements only work if a written agreement asks for the waiver, and it should be signed before work starts.
• Expect a small charge. Insurers sometimes charge the vendor for a waiver, especially on workers compensation. That is normal, not a reason to drop it.
• State rules differ. Some states limit waivers on workers compensation or in certain construction contracts. Your broker or attorney can tell you what applies where you work.
• Check it again at renewal. A waiver on last year's policy does not carry over unless the renewal includes the endorsement too.

Quick checklist

• Your contract asks for a waiver of subrogation, on which coverages.
• The certificate shows "Y" in SUBR WVD for each of those coverages.
• You have the endorsement page, it matches the policy number, and it covers you by name or by contract.
• The dates on the endorsement match the current policy.