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🎯 '''Loss trigger''' is the specific event or condition defined in an [[Definition:Insurance policy | insurance policy]] or [[Definition:Reinsurance | reinsurance]] contract that must occur before coverage is activated and the insurer becomes obligated to pay a [[Definition:Claim | claim]]. In essence, the trigger answers the question, "What exactly has to happen for this policy to respond?" Different [[Definition:Line of business | lines of business]] and contract structures employ different triggers — and the choice of trigger can dramatically affect which policies respond, when they respond, and how [[Definition:Loss allocation | losses are allocated]] across multiple policy periods or layers of coverage.

🔧 The most common trigger types encountered in the industry include occurrence triggers (coverage attaches when the loss-causing event takes place), claims-made triggers (coverage attaches when the [[Definition:Policyholder | policyholder]] first reports the claim during the [[Definition:Policy period | policy period]]), and manifestation triggers (coverage attaches when the loss becomes apparent). In [[Definition:Reinsurance | reinsurance]], triggers can take additional forms: [[Definition:Indemnity-based reinsurance | indemnity triggers]] that respond based on the cedent's actual losses, [[Definition:Parametric insurance | parametric triggers]] that pay out when a measurable index — such as wind speed or earthquake magnitude — exceeds a defined threshold, and [[Definition:Industry loss warranty (ILW) | industry loss triggers]] that activate when aggregate market losses surpass a specified level. Each carries distinct implications for basis risk, speed of payment, and the moral hazard profile of the contract.

💡 Selecting the right loss trigger is a strategic decision with far-reaching consequences. In [[Definition:Liability insurance | liability insurance]], the trigger debate has generated decades of complex litigation — particularly in long-latency claims like [[Definition:Asbestos and environmental (A&E) liability | asbestos]] and pollution exposure — because the trigger determines which [[Definition:Insurance carrier | carriers]] and which policy years bear the loss. On the reinsurance and [[Definition:Insurance-linked securities (ILS) | insurance-linked securities]] side, parametric triggers have gained traction because they enable rapid payouts without lengthy [[Definition:Claims adjustment | claims adjustment]] processes, though they introduce [[Definition:Basis risk | basis risk]] when actual losses diverge from the index measurement. A thorough understanding of loss triggers is essential for [[Definition:Underwriter | underwriters]], [[Definition:Insurance broker | brokers]], and claims professionals alike, as ambiguity around trigger language is one of the most frequent sources of coverage disputes.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Parametric insurance]]
* [[Definition:Claims-made policy]]
* [[Definition:Occurrence policy]]
* [[Definition:Basis risk]]
* [[Definition:Industry loss warranty (ILW)]]
* [[Definition:Coverage trigger litigation]]
{{Div col end}}

Definition:Loss trigger - Revision history

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