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🔍 '''Originating cause''' refers to the initial event or circumstance that sets in motion a chain of events ultimately resulting in an insured [[Definition:Loss | loss]]. In insurance, identifying the originating cause is essential to determining whether a [[Definition:Claim | claim]] falls within the scope of a [[Definition:Policy | policy's]] coverage, because policies typically respond to losses arising from specific covered perils rather than to every consequence of every event. The concept is closely related to, but distinct from, the legal doctrine of [[Definition:Proximate cause | proximate cause]] — which in most jurisdictions refers to the dominant or most effective cause of a loss rather than simply the first link in the causal chain.

⚙️ When a loss involves a sequence of events, [[Definition:Claims adjuster | claims adjusters]] and [[Definition:Underwriter | underwriters]] must trace the causal chain back to determine which peril initiated the damage. For example, if an earthquake ruptures a water main that subsequently floods a commercial property, the originating cause is the earthquake — even though the immediate physical damage was caused by water. Whether the resulting [[Definition:Property coverage | property]] claim is paid depends on whether earthquake or flood is the covered or excluded peril under the terms of the policy. In markets governed by English law, the proximate cause doctrine tends to prioritize the dominant efficient cause, which may or may not be the originating event. Under certain U.S. state laws, concurrent causation doctrines can produce different outcomes, and many [[Definition:Insurance contract | insurance contracts]] now include anti-concurrent-causation clauses to clarify that if an excluded peril is part of the causal chain, coverage does not apply regardless of other contributing causes.

⚖️ Disputes over originating cause are among the most litigated issues in insurance, particularly in complex losses involving [[Definition:Natural catastrophe | natural catastrophes]], [[Definition:Business interruption insurance | business interruption]], and multi-peril scenarios. The COVID-19 pandemic generated a wave of [[Definition:Coverage dispute | coverage disputes]] in which courts around the world had to determine whether government-mandated closures, the virus itself, or the broader public health emergency constituted the originating or proximate cause of business losses. Getting this analysis right has enormous financial consequences for both [[Definition:Policyholder | policyholders]] and [[Definition:Insurance carrier | insurers]], and it directly affects how [[Definition:Reinsurance | reinsurance]] treaties respond — since many reinsurance contracts aggregate losses by reference to a single originating event or cause for purposes of [[Definition:Retention | retention]] and [[Definition:Policy limit | limit]] calculations.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Proximate cause]]
* [[Definition:Peril]]
* [[Definition:Concurrent causation]]
* [[Definition:Business interruption insurance]]
* [[Definition:Claims adjustment]]
* [[Definition:Policy exclusion]]
{{Div col end}}

Definition:Originating cause - Revision history

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