Insurance requirements in contracts: what the certificate proves and what the endorsement grants

Two documents are involved in every insurance requirement, and they do opposite things. The certificate is evidence. The endorsement is the grant. Almost every dispute about insurance in a commercial contract comes from someone collecting the first and believing they have the second.

What a certificate of insurance actually proves

The standard form is the ACORD 25, Certificate of Liability Insurance, and it disarms itself in its own heading: "THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER", and it "does not affirmatively or negatively amend, extend or alter the coverage afforded by the policies below". It also says it does not constitute a contract between the insurer, the producer and the certificate holder. That is the whole document telling you what it is not.

Two lines below that disclaimer do real work and are almost never read. The limits panel is footnoted "limits shown may have been reduced by paid claims" — a shared aggregate can already have been spent on somebody else's claim. And the cancellation box promises nothing: notice will be delivered in accordance with the policy provisions, meaning according to whatever rights you have under the policy, and if you have none, none.

"Certificate holder" and "additional insured" are different boxes

The certificate holder is whoever the paper was addressed to. An additional insured is a person added to the policy's "Who Is An Insured" section, with a right to be defended and indemnified under someone else's cover. The form spells the difference out in its own IMPORTANT block: if the certificate holder is an additional insured, the policy "must have ADDITIONAL INSURED provisions or be endorsed", and a statement on the certificate "does not confer rights to the certificate holder in lieu of such endorsement(s)".

So the practical move is not to argue about the certificate but to ask for the endorsement page, or for the blanket additional insured wording that grants the status automatically where a contract requires it. Three ISO forms cover most situations: CG 20 10 for ongoing operations, CG 20 37 for completed operations, and CG 20 26 for a designated person or organisation.

The failure mode is the split between those first two. Take only the ongoing-operations form and your status ends when the work does. The claim that matters usually arrives afterwards — the installation that fails a year later, the product that injures someone after handover — and by then you are not an insured under that endorsement at all. Say "ongoing and completed operations" in the clause.

The endorsement reads your own contract back to you

Since the 2013 editions, the ISO additional insured forms measure themselves against your contract. CG 20 37 04 13 is explicit: coverage applies "only to the extent permitted by law", and "if coverage provided to the additional insured is required by a contract or agreement, the insurance afforded to such additional insured will not be broader than that which you are required by the contract or agreement to provide".

The limits paragraph goes further: where the contract requires the coverage, the most the insurer will pay for the additional insured is the amount required by the contract or the amount available under the declarations, whichever is less. Three counter-intuitive consequences follow.

• A modest number in your clause becomes your ceiling. Ask a supplier carrying $5m for $1m and you have contracted yourself down to $1m. If you want the limits they actually carry, say so.
• A vague clause produces vague status. If the contract requires additional insured cover only for the supplier's vicarious liability, that is all the endorsement grants, whatever the policy would otherwise have done.
• "To the extent permitted by law" imports local anti-indemnity rules. California Civil Code § 2782 voids construction indemnity for the promisee's sole negligence or wilful misconduct, and for private construction contracts made after 1 January 2013, provisions relieving the owner from its own active negligence. Several states have comparable limits.

Where the indemnity and the policy stop matching

A general liability policy pays, under Coverage A, for bodily injury and property damage caused by an occurrence — an accident. Property damage means physical injury to tangible property, or loss of use of it. Now read the indemnity two paragraphs above the insurance clause. It probably covers breach of the agreement, infringement of third-party intellectual property, breach of confidentiality, mishandled personal data and regulatory penalties. None of that is bodily injury or property damage, and requiring higher limits does not change it.

Above that sits the contractual liability exclusion, which removes liability taken on "by reason of the assumption of liability in a contract", subject to two exceptions: liability the insured would have had anyway, and liability assumed in an "insured contract". It is narrower than insurers once argued. In Ewing Construction Co. v. Amerisure Insurance Co. (Tex. 2014) the Texas Supreme Court held that a contractor promising to work in a good and workmanlike manner does not "assume liability" at all, because the promise adds nothing to the ordinary duty of care. Agreeing to be careful is not an assumption. Agreeing to carry someone else's liability is.

Defence is the sharpest edge. A contractual duty to defend bites the moment a claim is pleaded and it is yours to fund; your insurer's duty runs on the policy's own terms. Where the two do not line up you spend real money before anyone decides whether the policy answers for it. Draft the indemnity and the insurance clause as one exercise — indemnify, defend and hold harmless sets out what each verb costs, and the liability cap usually carves the indemnity out of the very limit that made the deal tolerable.

Waiver of subrogation, and the timing that voids it

Subrogation is the insurer's right to pay its own policyholder and then step into their shoes to sue whoever caused the loss. A waiver is the policyholder giving that up in advance, so their insurer cannot come after the other party. In practice it stops a fire on a site turning into a two-year fight between insurers with both parties as witnesses.

Two things go wrong. Timing: the waiver has to be given before the loss, because giving up rights after your insurer has paid interferes with rights that are by then the insurer's, and policies commonly treat that as a breach of the recovery condition. Form: the waiver usually has to be endorsed onto the policy — which is exactly what the certificate warns. Workers' compensation waivers are typically a scheduled endorsement carrying extra premium, so a blanket demand across every supplier is a demand that costs them money.

Professional liability does not work the way general liability does

Errors and omissions cover is written claims-made: the trigger is the date the claim is made, not the date the mistake happened. Two drafting consequences follow. The retroactive date has to predate the work, or the policy never sees it. And the cover has to outlive the contract, because problems with advice surface after the engagement ends — hence the requirement to maintain the policy for a stated period after completion, not only during the term.

Asking to be an additional insured on a professional liability policy, meanwhile, is a request you should hope is refused. Most insurers decline it, for a reason that runs against the person asking: these policies exclude claims between insureds. Sonoma County's contracting guidance puts it plainly — if the client is an additional insured on the consultant's policy and then sues the consultant, the consultant is not covered, and there is nothing left to recover from. The endorsement destroys the asset you were trying to reach.

Writing a clause that can actually be complied with

A supplier who cannot comply sends a certificate and hopes. A clause specific enough to be checked is also specific enough to be met, which is why the precise version usually signs faster. The same wording belongs in a vendor agreement or a consulting agreement, adjusted for which policies matter.

The insurance clause is not the most important paragraph in a contract. It is the one where the ratio of effort to consequence is most lopsided: two extra sentences, one about endorsements and one about limits, cost nothing to negotiate and decide whether a six-figure claim lands on your balance sheet or someone else's policy. On a freelance contract or an independent contractor agreement they are the cheapest items on the list. The document everybody collects grants nothing; the document that grants everything is the one nobody asks for.