Fortuity Principle

The fortuity principle is the bedrock concept that insurance responds only to losses that are accidental and uncertain from the insured's standpoint. A fortuitous event is one that is not planned, intended, or substantially certain to occur. This principle underlies the entire insurance mechanism: premiums are pooled to pay for random misfortune, not for damage the policyholder chose to cause or knew was coming. It is closely tied to the known loss rule, which denies coverage for losses already in progress when the policy incepts.

For business buyers, fortuity explains why many claims are denied even when the loss is real and expensive. Intentional acts, expected wear and tear, gradual deterioration, and losses the insured deliberately triggered generally fall outside coverage because they lack the element of chance. That is why occurrence-based liability forms define a covered occurrence as an accident, and why standard property and liability policies contain an intentional-acts exclusion. Understanding fortuity helps owners set realistic expectations: insurance is not a maintenance budget or a guarantee against foreseeable business consequences.

The important nuance is that fortuity is judged from the insured's perspective, not the victim's. A loss can be fully expected by a third party yet still be fortuitous to the policyholder who neither intended nor foresaw it — for example, an employee's unauthorized act. Conversely, damage the business itself knew was inevitable is not fortuitous even if the exact timing was unknown. Courts weigh what the insured actually knew or intended, which is why documentation of when a problem became known can decide whether the fortuity requirement — and therefore coverage — is satisfied.