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⚖️ '''Continuous trigger theory''' is a legal doctrine used in [[Definition:Insurance coverage | insurance coverage]] disputes to determine which [[Definition:Insurance policy | policies]] are activated when a [[Definition:Claim | claim]] involves injury or damage that develops gradually over an extended period rather than resulting from a single, discrete event. Under this theory, every policy in effect from the initial [[Definition:Exposure | exposure]] to the harmful condition through the manifestation of injury — and sometimes through to the point of [[Definition:Diagnosis | diagnosis]] or [[Definition:Claim | claim]] — is considered "triggered" and potentially obligated to respond. The doctrine emerged from complex [[Definition:Long-tail liability | long-tail liability]] cases, most notably [[Definition:Asbestos claim | asbestos]] and [[Definition:Environmental liability | environmental contamination]] litigation, where the lag between exposure and observable harm can span decades.

🔍 Courts applying the continuous trigger approach allocate defense and [[Definition:Indemnity | indemnity]] obligations across all triggered policy periods, often using pro-rata or other allocation methodologies to distribute the financial burden among successive [[Definition:Insurance carrier | insurers]]. This stands in contrast to alternative trigger theories — the [[Definition:Exposure trigger theory | exposure trigger]], [[Definition:Manifestation trigger theory | manifestation trigger]], and [[Definition:Injury-in-fact trigger theory | injury-in-fact trigger]] — each of which narrows the universe of responsive policies. The landmark New Jersey Supreme Court decision in ''Keene Corp. v. Insurance Company of North America'' and subsequent rulings have shaped how insurers, [[Definition:Policyholder | policyholders]], and courts navigate these disputes. For [[Definition:Underwriting | underwriters]] evaluating long-tail [[Definition:Liability insurance | liability]] risks, understanding which trigger theory a given jurisdiction follows is essential, because it directly affects the potential accumulation of [[Definition:Loss reserves | loss reserves]] across multiple policy years.

📊 The practical implications of the continuous trigger theory ripple through virtually every aspect of an insurer's operations when long-tail liabilities are involved. [[Definition:Actuarial | Actuaries]] must model reserve needs across extended time horizons, accounting for the possibility that policies written decades ago could still face new claims. [[Definition:Reinsurance | Reinsurers]] structure treaties and assess [[Definition:Ceded premium | ceded exposures]] with trigger theory assumptions baked into their pricing. For the broader market, the doctrine has driven significant innovation in policy language — including the development of [[Definition:Claims-made policy | claims-made]] forms and specific [[Definition:Policy exclusion | exclusions]] for latent injury — as insurers seek to limit the open-ended liability that continuous trigger allocation can create.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Long-tail liability]]
* [[Definition:Exposure trigger theory]]
* [[Definition:Manifestation trigger theory]]
* [[Definition:Claims-made policy]]
* [[Definition:Asbestos claim]]
* [[Definition:Loss allocation]]
{{Div col end}}

Definition:Continuous trigger theory - Revision history

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