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đĽ Clash cover is a type of reinsurance protection that responds when a single catastrophic event or set of related circumstances triggers claims across multiple policies, lines of business, or treaties within the same ceding company's portfolio. Unlike a standard per-risk excess of loss treatyâwhich addresses losses from individual risksâclash cover aggregates the impact of one event that simultaneously affects several otherwise independent exposures, protecting the insurer from a concentration of losses it did not anticipate at the individual policy level.
âď¸ Consider a chemical plant explosion that generates property damage claims under a commercial policy, workers' compensation claims for injured employees, general liability claims from neighboring businesses, and environmental liability claims for contaminationâall written by the same carrier. Each policy sits in a different book, potentially protected by different excess of loss layers, yet the aggregate drain on the insurer's capital stems from one occurrence. Clash cover sits above those individual program retentions and catches the combined loss that spills over, typically structured as a per-occurrence excess of loss layer with a retention set higher than any single-program attachment point.
đĄď¸ Without clash cover, a reinsurance program can appear robust on a line-by-line basis yet still leave the ceding company dangerously exposed to a multi-line event. This gap becomes especially significant for diversified carriers and Lloyd's syndicates that underwrite across many classes. Reinsurance brokers typically structure clash cover during the annual treaty renewal, stress-testing scenarios with catastrophe models to calibrate the appropriate attachment point and limit, ensuring the program absorbs realistic worst-case aggregation.
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