What Additional Insured Actually Means for You

Why this matters

Granting additional insured status feels like a signature. It is a purchase, paid later, out of an account most shops never look at: their own loss history. When an institution is an additional insured on your general liability policy and something happens on their property, their lawyer tenders the claim to your carrier. Your carrier defends them. The claim is recorded against your policy. It shows on your loss run at renewal, whether or not anyone ever concluded you were at fault, and whether or not a single payment was made.

None of that is an argument against granting it. Institutional work requires it and you will not get on the vendor list without it. It is an argument for knowing what you granted, to how many parties, on which endorsement form, and what it is doing to the one aggregate limit all of them share.

A renewal nobody could explain

A nine-technician mechanical shop got a general liability renewal quote 34 percent above expiring. Their broker's first read was market conditions. The owner's first read was that the broker had stopped shopping it.

The loss run settled it. Three claims in the three-year experience period. The owner recognized one: a van backed into a bollard in a parking structure, closed and paid, no dispute. He did not recognize the other two.

Claim two. A visitor at a community college slipped in a corridor where the shop's technician had been running a wet vacuum on a condensate overflow. The visitor sued the college. The college tendered to the shop's carrier as an additional insured. The carrier defended both the college and the shop, and the matter closed with no indemnity payment at all. The file still shows as a reported claim with defense expense on it.

Claim three. A county maintenance worker was injured on a rooftop unit the shop had serviced eleven days earlier. Workers compensation covered him, and his employer's carrier then pursued the shop. The county, also an additional insured, tendered its own defense. That one settled inside the shop's limits.

The owner had never received a letter about either. He had not been sued personally; the institutions had, and the tender went from their risk managers to his carrier without passing through his office. That is the ordinary mechanism, not an oversight.

What actually drove the number. The underwriter's stated concern was not the settlement on claim three. It was frequency: three reported claims in three years on a nine-technician shop, one of them closed at zero and still counted, on an account the carrier prices toward a loss ratio band the underwriter described as the mid-forties. Two of the three reported claims existed because of endorsements the shop had granted and forgotten. The claim that closed with no payment moved the renewal exactly as much as the one that paid, because frequency is a rating input independent of severity.

What the endorsement actually does

It extends your policy, it does not create a new one. The institution becomes an insured under your existing limits for liability arising out of your work. Nothing is added. Your each-occurrence limit and your general aggregate are the same numbers they were.

Every additional insured draws on the same aggregate. This is the part that surprises people, and it is the reason to count your grants. Your general aggregate is one bucket for the policy year, shared across every insured on the policy and every job you run. A shop that has granted additional insured status to fourteen institutional accounts has not created fourteen protections. It has fourteen parties with a claim on one bucket, drawn in the order claims are paid. If two claims in one policy year consume 60 percent of the aggregate, what remains for all fourteen accounts and every residential job for the rest of that year is the other 40 percent - and an institution that discovers mid-year that your aggregate is largely spent may treat that as a compliance failure. The endorsement that fixes this is a per-project general aggregate, which gives designated projects their own aggregate rather than sharing the policy-wide one. It costs premium. On a shop with a small number of large institutional accounts it is usually worth asking about; on a shop with many small ones it usually is not, because the administrative load rises with the count of designated projects.

Ongoing operations and completed operations are two different forms. The commonly used ongoing operations endorsement, CG 20 10, responds while the work is in progress. Once the work is complete, a claim arising from it falls into products and completed operations, which requires the separate CG 20 37 form. Claim three above arrived eleven days after the work, on a unit the shop had finished, which is precisely the gap the second form exists to close. An agreement that requires both and a certificate that shows one is a live exposure, not a paperwork nit. See related: The Certificate of Insurance and What It Has to Say.

Primary and non-contributory changes the order of payment, not the amount, and it is its own endorsement. It is not conferred by the additional insured endorsement and it is not conferred by a checked box on a certificate; ask your agent which form carries it on your policy. With it, your policy responds first and the institution's own general liability does not contribute. Without it, the two policies' other-insurance clauses decide how they share, which usually means your carrier and theirs argue about it while the defense runs.

Current forms are generally limited, and the limit is in your favor. These endorsements have been narrowed twice, and which narrowing you have depends on the edition date printed on your own form. The 2004 revision replaced the broad "arising out of" trigger with liability caused in whole or in part by your acts or omissions. The 2013 revision added a further limit, capping coverage at the extent and amount the written contract actually requires. Read the edition date rather than assuming the current wording, and read what the agreement demands rather than assuming your endorsement matches it. The institution's own sole negligence is generally outside that grant. Older, broader wording that covered liability merely "arising out of" your work is still in circulation in some contract templates, so read what the agreement demands rather than assuming your endorsement matches it. Contractual indemnity is a separate promise that runs alongside this and is limited in many states by anti-indemnity statutes; that is its own subject. See related: Risk Shift to Subs via Additional Insured and Waiver of Subrogation.

Defense cost usually sits outside your limits, but confirm it. On the standard commercial general liability form, defense expense is generally paid in addition to the limits rather than eroding them. Some professional liability forms, pollution forms and excess layers are written the other way, with defense inside the limits, and on those a defended claim consumes limit even when it closes at zero. Which of those you have is a policy question, not a certificate question.

The practical decisions this leaves you

Ask for a blanket additional insured endorsement. A blanket form grants additional insured status automatically to any party you have agreed in a written contract to name, rather than requiring a scheduled endorsement per customer. For a shop with a growing count of institutional agreements, this converts a recurring multi-day request into a same-day certificate, and it removes the failure where an agreement is signed and the endorsement is never actually ordered. Confirm the blanket form covers both ongoing and completed operations, because some do not.

Count your grants once a year. You cannot manage the aggregate you share without knowing the number of parties sharing it. This is a list, not an analysis: every active agreement that requires additional insured status.

Do not grant more than the contract requires. Naming a party for completed operations where the agreement asks only for ongoing operations gives away exposure for nothing. Read the article, grant what it says.

What would change the calculus. On a large capital project an institution may run an owner-controlled insurance program, a wrap-up that insures every party on the project under one policy. Where a wrap-up applies, on-site injury claims run through it rather than through your policy, your additional insured grants matter much less for that project, and your own policy may be endorsed to exclude the wrapped work, and where it is, the rating treatment of that payroll at audit is a question to raise with your broker before the audit rather than after it, because the answer depends on which exclusion endorsement is attached and how your carrier rates it. In the other direction, a shop with a large self-insured retention pays the first layer of every tendered claim out of pocket before its carrier engages, so a run of small tendered claims that a low-deductible shop would barely notice becomes a direct cost. Retention size and claim frequency multiply; check both together rather than either alone.

How to verify you got this right

Ask your broker for your loss run every year at renewal, before the quote arrives, and read it as a list of surprises. Any claim you do not recognize was almost certainly tendered by a party you named. That is the only routine feedback you get on what your endorsements are doing.

Then hold the loss run beside your list of active additional insured grants. If claims are concentrated in one account, the conversation to have is about that site's conditions and your scope there, not about your insurance. If they are spread across accounts, the exposure is in how you work, and no endorsement change will fix it.

References

• Insurance Services Office standard endorsement forms CG 20 10 (ongoing operations) and CG 20 37 (products and completed operations), and the designated construction project general aggregate limit endorsement
• Standard commercial general liability coverage form provisions on supplementary payments and defense expense
• See related: The Certificate of Insurance and What It Has to Say, Risk Shift to Subs via Additional Insured and Waiver of Subrogation, Business Insurance Basics