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🎲 '''Fortuitous event''' is a foundational principle of [[Definition:Insurance | insurance]] law and practice holding that a covered [[Definition:Loss | loss]] must result from chance — an occurrence that is accidental, unexpected, and beyond the [[Definition:Insured | insured's]] deliberate control. Without this element of fortuity, the transfer of risk that defines an insurance contract collapses: if a loss is certain to happen or is intentionally caused, no genuine risk transfer exists, and what might appear to be an insurance policy fails to meet the legal and regulatory definition of one. The concept applies universally across jurisdictions, though the precise doctrinal framing varies — common-law systems like those in the United States, the United Kingdom, and Australia tend to root it in case law, while civil-law traditions across Continental Europe, Japan, and other markets codify it in statutory insurance contract law.

⚙️ In practice, the fortuity requirement shapes how [[Definition:Underwriter | underwriters]] design [[Definition:Policy wording | policy wordings]], how [[Definition:Claims adjuster | claims adjusters]] investigate losses, and how courts resolve coverage disputes. A fire caused by an accidental electrical fault is fortuitous; an [[Definition:Arson | arson]] committed by the policyholder is not. A [[Definition:Natural catastrophe | hurricane]] devastating a coastal property is fortuitous; wear and tear gradually degrading a roof is not. The distinction also surfaces prominently in [[Definition:Reinsurance | reinsurance]], where [[Definition:Cedant | cedants]] must demonstrate that ceded losses arise from genuinely fortuitous events rather than from known, pre-existing conditions that were concealed during the underwriting process. [[Definition:Anti-selection | Anti-selection]] — where a party seeks coverage after a loss becomes probable or imminent — represents a failure of fortuity, and underwriters guard against it through [[Definition:Waiting period | waiting periods]], [[Definition:Warranty | warranties]], effective-date controls, and rigorous [[Definition:Disclosure | disclosure]] requirements.

⚖️ Beyond individual policy disputes, the fortuity principle serves as a structural safeguard for the entire insurance mechanism. If insurers were obligated to pay for deliberate or inevitable losses, [[Definition:Premium | premium]] pools would be depleted by claims that bear no relationship to shared, probabilistic risk, ultimately undermining solvency and the affordability of coverage for all policyholders. Regulators worldwide reinforce this principle by requiring that insurance contracts satisfy an identifiable [[Definition:Risk transfer | risk transfer]] test — a requirement embedded in standards from [[Definition:IFRS 17 | IFRS 17]] to [[Definition:US GAAP | US statutory accounting]]. When emerging risks test the boundaries of fortuity — as seen in debates over [[Definition:Pandemic risk | pandemic]] coverage, [[Definition:Cyber insurance | cyber]] incidents involving known software vulnerabilities, or climate-related losses that become increasingly predictable — the industry must continuously reexamine where the line between fortuitous and foreseeable should be drawn.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Insurable interest]]
* [[Definition:Risk transfer]]
* [[Definition:Moral hazard]]
* [[Definition:Proximate cause]]
* [[Definition:Exclusion]]
* [[Definition:Utmost good faith]]
{{Div col end}}

Definition:Fortuitous event - Revision history

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