An insurance broker issued a certificate to a commercial tenant confirming additional insured status. The underlying policy had not been endorsed. When a slip-and-fall claim at the tenant's premises was tendered to the landlord's insurer under the additional insured provision, the carrier denied: "No endorsement exists." The landlord sued the broker for E&O.
The broker's team processed 800 certificates that year. This was the third certificate with that error.
These are the mistakes that produce those errors-and how to eliminate them.
Mistake 1: Noting AI Status on a Certificate Without Confirming the Endorsement
This is the single most consequential COI error in commercial insurance. A certificate of insurance is a summary document. Writing "Additional Insured" in the description of operations, or noting "CG 20 11" on the form, does not create an additional insured relationship. Only an endorsement on the underlying policy creates that relationship.
How it happens: Account coordinators process certificate requests quickly. They confirm the client has an AI endorsement on their policy in general-but don't verify that a specific, properly-named AI endorsement has been issued for this specific counterparty.
The consequence: The counterparty believes they're covered as an AI. A claim occurs. The carrier denies: no endorsement. The counterparty sues the broker who issued the misleading certificate.
Fix: Require confirmation of a policy-level AI endorsement before any certificate notes AI status. Create a checklist step that forces this confirmation before issuance.
Mistake 2: Using the Wrong Additional Insured Endorsement Form
CG 20 10 covers ongoing operations. CG 20 11 covers both ongoing and completed operations. Many contracts-especially construction subcontracts and commercial leases involving tenant improvements-require CG 20 11 or equivalent.
A broker who issues a CG 20 10 endorsement when CG 20 11 was required leaves the counterparty unprotected for claims arising after the work is complete (e.g., a defect in tenant improvements discovered two years after project completion).
How it happens: Brokers default to CG 20 10 because it's more commonly available. They don't check whether the contract specifies the form type.
Fix: Read the contract's AI requirement language. If it specifies "completed operations" or references the specific endorsement form, confirm that form is available and used.
Mistake 3: Issuing a Certificate That Doesn't Match the Client's Actual Coverage
A client's lease requires $2 million per occurrence in GL. The client's policy provides $1 million per occurrence. The broker issues the certificate showing $2 million because the client asked them to-or because the coordinator assumed the limits were correct without checking.
How it happens: Certificate requests arrive from clients without policy details attached. Coordinators process from memory or from an outdated policy summary. Limits have changed since the last renewal.
The consequence: A claim occurs. The carrier pays $1 million. The landlord is exposed for the $1 million gap. The landlord argues the broker misrepresented coverage on the certificate.
Fix: Require every outgoing certificate to be verified against current policy declarations before issuance-not against the prior year's summary.
Mistake 4: Not Reading the Contract Before Reviewing Incoming COIs
A broker reviews an incoming COI for a client and declares it compliant-because it has GL, workers' comp, and an AI listing. The client's lease requires a CG 20 11 AI endorsement, primary and non-contributory language, a waiver of subrogation on workers' comp, and $3 million in umbrella. None of those were checked.
How it happens: Brokers reviewing incoming COIs without the underlying contract don't know what to look for. They pattern-match: "Has GL? Has AI? Looks fine."
Fix: Never review an incoming COI without first reading the contract's insurance requirements. Build a contract library for every client relationship where incoming COI review is part of the service.
Mistake 5: Accepting a Checked Box as a Waiver of Subrogation
The ACORD 25 form has checkboxes for waiver of subrogation. Checking the box on the certificate does not create a WOS-only an endorsement on the underlying policy does.
A checked WOS box without an endorsement means the counterparty believes they're protected from subrogation, but the insurer retains full subrogation rights. When a claim is paid and the insurer subrogate, the counterparty discovers the checkbox was meaningless.
Fix: Verify that a WOS endorsement is actually on the policy for every line where WOS is required. Don't accept the ACORD checkbox as evidence.
Mistake 6: No Documentation of Compliance Reviews
A broker reviews incoming COIs informally-mentally or on a notepad. When a claim occurs and the client demands proof that the broker performed due diligence, there's nothing to show.
How it happens: COI review is treated as a task, not as a professional service with a deliverable. There's no formal output, no file entry, no written determination.
The consequence: Absence of documentation is effectively absence of review in a legal dispute. The broker cannot defend their due diligence because they can't prove it happened.
Fix: Document every compliance review-date, reviewer, certificate version, contract reference, specific findings, compliance determination. This documentation is the broker's E&O defense.
Mistake 7: Not Updating Requirements When Contracts Are Amended
A broker maintains a requirement profile for a client's tenant-based on the original lease. The lease is amended six months later, increasing GL requirements from $1 million to $2 million. The broker doesn't update the profile. The next incoming COI shows $1 million and passes review.
How it happens: Contract amendments are sent to the client's legal team, not to the broker. The broker doesn't know requirements changed.
Fix: Include in your service agreement a requirement that clients notify you of any contract amendment that affects insurance requirements. Periodically ask clients about changes. When you do a compliance review, ask: "Has this contract been modified since the last time we looked at it?"
Mistake 8: Treating COI Management as an Administrative Function
The largest systemic mistake brokers make is not a specific error-it's a categorization error. When COI management is treated as administrative work (processing requests, filing documents), it gets assigned to the lowest-cost staff, receives minimal training investment, and has no professional standards applied to it.
In practice, COI compliance involves:
- Insurance contract interpretation
- Endorsement form knowledge
- Coverage analysis
- Client communication of professional findings
This is professional work with professional liability implications. It should be treated and resourced accordingly.
Frequently Asked Questions
Q: If a client asks us to issue a certificate that misrepresents their coverage, what should we do? A: Decline. Issuing a certificate that contains material misrepresentations about coverage terms exposes the broker to E&O liability, and in some states, to regulatory sanctions. Explain the issue to the client, correct the underlying coverage if possible, and document the conversation.
Q: Which of these mistakes is most likely to generate an E&O claim? A: Mistakes 1 (AI without endorsement) and 3 (certificate showing limits the policy doesn't carry) are the most common sources of broker E&O claims in the certificate context. Both involve affirmative misrepresentations about coverage.
Q: Is it the broker's job to catch compliance gaps in incoming COIs, or is that the client's responsibility? A: It's the client's primary responsibility. If the broker has undertaken a compliance management service, it becomes part of the broker's obligation. If the broker is simply reviewing on an informal, ad hoc basis, the scope of responsibility is less clear. Formal service agreements that define what the compliance service includes and excludes are the best protection.
Q: How do we protect ourselves when a client chooses not to act on a compliance finding? A: Document the finding and your recommendation in writing. Ask for written acknowledgment from the client that they've reviewed the deficiency. File the response. If the client overrides a professional recommendation on the record, your E&O exposure for the resulting loss is substantially reduced.
Bramble eliminates the mechanical sources of these errors-reading contracts, verifying endorsements, and producing specific compliance determinations that brokers can document, deliver to clients, and rely on in E&O defense.