Home

Did you know?

🔄 Continuous trigger is a legal theory used in insurance coverage disputes to determine which policies respond when a bodily injury or property damage claim stems from exposure or conditions that span multiple policy periods. Under this doctrine, every policy in effect from the initial exposure through the manifestation of harm — and sometimes through the point of diagnosis or discovery — is deemed "triggered," obligating each successive insurer to participate in the defense and indemnification of the claim.

📐 Courts have applied the continuous trigger most prominently in long-tail liability cases such as asbestos exposure, environmental contamination, and construction defect litigation, where injury develops gradually over years or decades. When the trigger is continuous, the policyholder can access the aggregate limits of every triggered policy year, dramatically expanding the available coverage pool. Carriers, in turn, must allocate their share of the loss — often using methods like pro-rata by time on risk or "all sums" allocation, depending on the jurisdiction. The landmark New Jersey Supreme Court decision in Owens-Illinois v. United Insurance Group is among the most cited authorities establishing this framework, and its reasoning has influenced courts nationwide.

🧩 For insurers and reinsurers, the continuous trigger theory creates significant reserving complexity, because a single claim can implicate dozens of policy years and multiple layers of excess and umbrella coverage. Actuaries must model potential trigger outcomes when setting IBNR reserves for legacy books of business. The theory also shapes how underwriters draft modern exclusions — such as absolute pollution exclusions — aimed at limiting future long-tail trigger disputes. Anyone involved in claims management, legacy run-off, or coverage litigation should understand continuous trigger alongside its alternatives, including the exposure trigger, manifestation trigger, and injury-in-fact trigger.

Related concepts:

• Definition:Exposure trigger
• Definition:Manifestation trigger
• Definition:Injury-in-fact trigger
• Definition:Long-tail liability
• Definition:Occurrence-based policy
• Definition:Allocation (insurance)