What Is an Insurance Exclusion?

Why insurance exclusions matter

A certificate of insurance shows the coverages a policy carries, but it will not list the exclusions written inside the policy itself. Those exclusions can remove the very protection you are counting on. A common example: standard general liability policies typically exclude pollution, so acontractor who works with hazardous materials can look covered on paper while carrying a major uncovered risk.

Common exclusions to watch for

Pollution and environmental damage, professional services such as errors in advice or design, certain high-risk operations, and prior or known losses. The exclusions that matter most are the ones that touch the work a partner actually does for you.

Why it matters for compliance

Spotting likely exclusions is what separates a real certificate review from a box-checking one. When a coverage is required for a partner's work, confirm the policy does not exclude it, and request the endorsement or policy language that proves it.

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Related resource

See a real exclusion in action: the contractualliability exclusion and what it means for your coverage.