Excess and Surplus Insurance

(1) Insurance to cover losses above a certain amount, with losses below that amount usually covered by a regular policy. (2) Insurance to cover an unusual or one-time risk, e.g., damage to a musician’s hands or the multiple perils of a convention, for which coverage is unavailable in the normal market. (See also “Umbrella liability” and “surplus lines.”)

Excess liability policy

A policy issued to provide limits in excess of an underlying liability policy. The underlying liability policy can be, and often is, an umbrella liability policy. An excess liability policy is no broader than the underlying liability policy; its sole purpose is to provide additional limits of insurance.
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A policy issued to provide limits in excess of an underlying liability policy. The underlying liability policy can be, and often is, an umbrella liability policy. An excess liability policy is no broader than the underlying liability policy its sole purpose is to provide additional limits of insurance.

Exclusions

Specific conditions or circumstances listed in the policy for which the policy will not provide benefit payments.
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Specific situations, conditions or circumstances that are listed in the contract as being not covered.

Exposure Unit

Unit of measurement used in insurance pricing.
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The number of exposure units used to determine the premium or pure premium for a policy or group of policies. Also, a unit such as a payroll, receipts, area, gate receipts, automobiles, etc. used to measure exposure.

Extended coverage (EC) endorsement

An endorsement to a standard fire policy adding coverage for the following perils
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An endorsement to a standard fire policy adding coverage for the following perils windstorm, hail, explosion (except of steam boilers), riot, civil commotion, aircraft, vehicles, and smoke. The EC perils are now included in most property policies without the need for a separate endorsement.