Mitigating A Loss Is A Duty, Not A Favour

Every policy contains a condition requiring reasonable steps to prevent further loss after an incident. It is a duty, and the settlement can be reduced where it is ignored.

What the duty actually requires

The standard is what a prudent uninsured person would do. The test imagines someone bearing the cost themselves and asks whether they would have acted.

Turning off a water supply, boarding a broken window, moving undamaged contents away from water and arranging drying are the everyday examples.

It does not require heroics, expenditure beyond means, or action creating danger. Reasonableness is judged against the circumstances at the time, not with hindsight.

Why the cost of mitigation is usually covered

Most wordings pay the reasonable cost of steps taken to limit damage, because the insurer benefits directly from a smaller eventual claim.

This includes emergency trades, temporary protection and sometimes storage. Keeping receipts turns those costs into a claimable head rather than an argument.

Where the expenditure is substantial, agreeing it with the insurer first is safer, since only reasonable costs are recoverable and the definition is the insurer's to test.

Where failure to mitigate bites

The insurer does not decline the whole claim. It declines the part of the damage that would not have occurred had reasonable steps been taken.

A leak left running for days after discovery produces a claim in two parts: the original escape and the avoidable spread. Only the first is straightforwardly covered.

Proving what would have happened is difficult, which is why insurers usually raise this only where the failure is clear and the additional damage is substantial.

Mitigation and evidence pull in opposite directions

Clearing damage quickly conflicts with preserving evidence of what happened, and both matter. Photographs taken before anything moves resolve the tension.

Damaged items should generally be retained rather than discarded until the insurer has had the chance to inspect or agree disposal.

Where disposal is unavoidable for health reasons, documenting the item and the reason preserves the claim.

The related duty of reasonable care

A separate condition requires reasonable care to prevent loss in the first place, which is a different obligation and is applied more cautiously by insurers.

Courts in many jurisdictions have limited that condition so it excludes only reckless conduct rather than ordinary carelessness, which insurance exists to cover.

Mitigation duties, recoverable costs and the standard of care applied vary by insurer and jurisdiction and change over time. The wording and applicable law govern the outcome.