Definition:Occurrence policy
📋 Occurrence policy is a type of insurance policy that provides coverage for losses arising from events that take place during the policy period, regardless of when the claim is actually reported to the insurer. This stands in contrast to a claims-made policy, which covers claims only if both the event and the reporting of the claim fall within the policy's active dates (or any applicable extended reporting period). Occurrence policies are the traditional form in many liability and property lines, and they remain the dominant structure in commercial general liability, homeowners, and commercial auto coverage.
🔄 Under an occurrence policy, the key trigger is the date the bodily injury, property damage, or other covered event happened — not the date the insured became aware of it or reported it. This means a policyholder could discover harm years after the policy expired and still have a valid claim against the policy in force when the event occurred. For the insurer, this creates long-tail exposure, since reserves must account for claims that may not surface for years or even decades. Actuaries use loss development factors and IBNR estimates to project these latent liabilities, and reinsurers factor the tail risk into their pricing and commutation strategies.
🛡️ The enduring appeal of occurrence policies for policyholders and brokers lies in their simplicity and the breadth of protection they offer. An insured does not need to worry about maintaining continuous coverage to preserve the right to report a claim — once the event falls within a covered policy period, the right to claim is locked in. However, this certainty for the insured translates into greater uncertainty for underwriters, which is why occurrence forms tend to carry higher premiums than claims-made alternatives in lines with significant latent exposure, such as professional liability and product liability.
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