Additional Insured, Primary and Non-Contributory, Waiver of Subrogation: What Your Contract Is Really Asking For

Three phrases appear in nearly every subcontract in American construction. Most contractors sign them without a clear picture of what they do, which is understandable, since the language was written for lawyers and insurance people rather than for the person doing the work.

They are not boilerplate. Each one moves a specific risk from one party to another, and together they form the structure the entire construction insurance system runs on. Understanding them takes about ten minutes, and it changes how you read every contract you sign afterward.

The idea underneath all three

Start with the concept, because the three phrases make more sense as parts of one machine.

When a general contractor hires you, they take on a problem. If your work injures somebody or damages something, the injured party will sue everyone with a name on the project, and the general contractor will be on that list whether or not they did anything wrong. Their goal is that your insurance handles it rather than theirs.

That is risk transfer, and the contract accomplishes it in two ways at once. The indemnity clause is a promise you make personally, backed by the assets of your business. The insurance requirements are what make that promise collectible, by putting a carrier behind it. These three phrases are the mechanics of the second half.

Additional insured

Being named an additional insured means the other party becomes an insured under your policy for the work you perform. Not a certificate holder, which means only that they received a document. An actual insured, with the right to tender a claim to your carrier and have your carrier defend them.

Two things determine whether it works.

The first is scope. Additional insured status can extend to ongoing operations only, or to ongoing and completed operations. Ongoing means while the work is in progress. Completed operations means after the work is finished, which is when most construction claims actually arrive. An endorsement granting ongoing operations only will satisfy a quick glance at a certificate and fail entirely on a defect claim two years later.

The second is form. Blanket additional insured endorsements grant status automatically to any party you have agreed in a written contract to name, which is convenient. Scheduled endorsements name specific parties, which is precise but requires you to remember to request each one. Both work. What matters is reading what the endorsement actually grants, because some forms limit coverage to liability caused by your own negligence, or only to the extent required by the contract, or exclude the additional insured’s own negligence. Those limitations are legitimate and common, and they are also frequently narrower than what the contract obligated you to provide.

One more detail worth knowing. Industry standard additional insured endorsements come from a small family of forms, and the edition date matters as much as the form number. These forms have been revised repeatedly over the past two decades, generally in the direction of narrowing coverage, so two editions of the same form can behave differently. Your agent should be able to tell you which edition sits on your policy.

Primary and non-contributory

Every liability policy contains an other insurance clause explaining what happens when more than one policy covers the same loss. The default is usually that the policies share, pro rata or by some other method.

Primary and non-contributory overrides that default in one direction. Primary means your policy responds first, ahead of any other coverage. Non-contributory means your carrier will not ask the other party’s carrier to contribute.

The general contractor cares because without it, your carrier can take the position that their policy shares the loss. They then have a claim on their own loss history, a deductible to fund, and an argument with their own carrier, which is precisely the outcome the requirement exists to prevent.

It matters to you because agreeing to it in a contract does not make it true. This has to exist as an endorsement on your policy. A certificate reading primary and non-contributory over a policy with no such endorsement is a document making a claim the policy does not support, and the person who discovers that is usually you, at claim time.

Waiver of subrogation

Subrogation is the right your insurer has, after paying a claim, to step into your shoes and pursue whoever actually caused the loss. It is how carriers recover money and it is a normal part of how insurance works.

A waiver of subrogation is your carrier agreeing in advance to give up that right against a specific party. When a general contractor requires one, they are saying that if your carrier pays a claim on this project, they are not permitted to turn around and come after us to recover it.

Three practical notes. Most carriers will provide it by endorsement. Some charge a modest premium, since they are giving up a recovery right. And in most cases the waiver has to be in place before the loss occurs, which means it belongs on the policy before the job starts rather than arranged afterward.

How the three work together

Walk through a single claim and watch each one do its job.

A framing subcontractor’s employee is injured on a jobsite. Workers compensation pays the medical and lost wages, because that is what it is for. The employee’s attorney then sues the general contractor, alleging unsafe site conditions. In most states the employee cannot sue their own employer, but the general contractor is fair game.

The general contractor tenders the claim to the framing subcontractor’s general liability carrier as an additional insured.

Additional insured status is what gives the general contractor the right to tender at all. Without it, their own policy handles the defense from the first dollar. If the endorsement covers ongoing operations only and the injury happened during construction, this works. If the same claim were a defect claim arriving after completion, it would not.

Primary and non-contributory determines whether the framing subcontractor’s carrier handles the entire matter or argues that the general contractor’s carrier should share it. Without the endorsement, the general contractor ends up with a claim on their loss run either way.

Waiver of subrogation determines what happens afterward. If the framing subcontractor’s carrier pays and believes the general contractor’s site supervision contributed to the injury, subrogation is how they would go recover part of it. The waiver closes that door.

Three requirements, three distinct jobs, one claim.

What to check on your own policy

• Pull the endorsement schedule, not the declarations page. The declarations page will not tell you any of this.
• Find your additional insured endorsement and read what it grants. Ongoing operations, completed operations, or both.
• Note the edition date on that endorsement.
• Confirm a separate primary and non-contributory endorsement exists.
• Confirm a waiver of subrogation endorsement exists, and whether it is blanket or scheduled.
• Compare all of that against what the contracts you are actually signing require.

If you cannot find these, that is itself the answer.

The most common failure

The certificate says all three. The policy contains none of them.

This happens more often than it should, and it is rarely anyone acting in bad faith. Certificates get produced quickly, frequently by someone working from the contract requirements rather than from the policy, and the document ends up describing what was asked for instead of what exists.

It holds up fine right until a claim, at which point the carrier looks at the policy rather than the certificate, and the certificate turns out to be worth exactly what it says on its own face. A matter of information only, conferring no rights upon the holder.