Endorsement
A written amendment attached to an insurance policy that adds, removes, or modifies coverage terms, conditions, or limits.
What It Is
An endorsement is a document attached to an insurance policy that modifies the terms, conditions, coverage, or limits of the underlying policy. Endorsements can broaden coverage (adding additional insureds, extending to additional perils), restrict coverage (adding exclusions, reducing limits), or clarify policy language.
Endorsements can be issued at inception, mid-term, or at renewal. They are identified by form numbers (such as CG 20 10, CG 20 37, or carrier-proprietary numbers) and edition dates. The endorsement supersedes any conflicting language in the base policy form.
In commercial insurance, endorsements are the primary mechanism for customizing coverage to meet contractual requirements and address specific exposures. A single CGL policy may have 20 or more endorsements attached, and each one must be reviewed to understand the actual scope of coverage provided.
Why It Matters for Brokers
Endorsements are where the real coverage details live. The base CGL policy form is relatively standardized, but endorsements can dramatically alter the coverage. A broker who reviews only the declarations page and base form without reading every endorsement is likely to miss critical coverage modifications. This is especially true for exclusionary endorsements, which carriers may attach to address specific underwriting concerns. Brokers must review every endorsement on every policy — not just the ones they requested.
Real-World Example
A commercial bakery's CGL policy has 18 endorsements. The broker reviews the declarations page showing $1M/$2M limits and confirms the additional insured endorsements were added. However, the broker misses endorsement #14, a carrier-proprietary exclusion for "products containing tree nuts." When a customer has a severe allergic reaction to a walnut brownie and files a $340,000 claim, the claim is denied based on the tree nut exclusion. The bakery sues the broker for failing to identify and disclose the exclusion.
Common Mistakes
- 1Reviewing only the endorsements the broker requested without reading all endorsements the carrier attached to the policy.
- 2Not tracking endorsement edition dates, which significantly affect coverage scope — especially for additional insured and waiver of subrogation forms.
- 3Assuming carrier-proprietary endorsements provide the same coverage as the ISO forms they replace without comparing the actual language.
How brokerageaudit.com Handles This
Policy Checker reads every endorsement on uploaded policies, cataloging each by form number, edition date, and effect (broadening, restricting, or clarifying). It flags exclusionary endorsements that may create coverage gaps and compares carrier-proprietary forms against ISO equivalents. COI Manager cross-references issued certificates against verified endorsements to prevent certificates from referencing coverage that is not actually endorsed on the policy.