A policy covering claims that arise out of damage or injury that took place during the policy period (or reinsurance contract period when used to describe reinsurance coverage) regardless of when claims are made. Most commercial general liability insurance is written on an occurrence form. Contrast with Claims-Made coverage.
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Same as occurrence basis refers to a type of insurance coverage that insures occurrences taking place during the policy period, regardless when the claim arising out of the occurrence is first made. This coverage is in contrast to claims made coverage, which insures claims first made during the policy period, regardless when the alleged wrongdoing occurred.