Occurrence policy
A liability policy that covers injury, property damage or another covered event that happens during the policy period, even if the claim is reported after the policy ends. Payment still depends on the insuring agreement, exclusions, conditions, deductibles, limits and state law, and the policy form sets the exact trigger.
Also called: occurrence, occurrence coverage form
An occurrence policy answers one practical question: which year's policy pays when a claim shows up late. If a customer is hurt in 2025 and sues in 2027, the occurrence policy that was in force in 2025 is the one that responds, even if you have since switched insurers or closed the policy. That date rule decides which policy year responds, not whether the loss is covered or the limit is high enough. You still have to give notice and cooperate with the insurer.
How the trigger and the limits work together
New York's insurance regulation defines an occurrence policy as one covering liability for injury or damage arising out of incidents, acts or omissions that occurred during the policy period, where a claim may be made during or after that period, under 11 NYCRR § 73.1(j) (opens in a new tab). Coverage applies regardless of when the claim is filed, according to the Connecticut Insurance Department glossary (opens in a new tab).
Once the right policy year is found, its limits do the rest. A Connecticut state procurement contract (opens in a new tab) requires commercial general liability of $3,000,000 per occurrence and $3,000,000 aggregate. Suppose a covered accident happens during that policy period, the claim arrives after the policy has expired, the covered damages are an illustrative $1,200,000, and there is no deductible.
Hover or tap a row to highlight it.
| Item | Amount |
|---|---|
| Covered damages | $1,200,000 |
| Deductible | $0 |
| Insurer pays (from the policy in force when the accident happened) | $1,200,000 |
| Left of the $3,000,000 per-occurrence limit | $1,800,000 |
| Left of the $3,000,000 aggregate, if this is the only payment counted against it | $1,800,000 |
The $3,000,000 limit comes from the contract; the $1,200,000 loss is illustrative. A larger loss, a deductible, an exclusion or defense costs paid inside the limit would change the result.
Limits and settings that change what the policy pays
The occurrence label sits beside other settings on the declarations page, and each one moves the payout:
- Each-occurrence limit. The most the policy pays for one occurrence.
- General aggregate limit. The most it pays for all covered losses in the policy period, with separate aggregates such as products-completed operations where they apply.
- Deductible or self-insured retention. What you pay before the insurer's payment begins.
- Policy period. Commonly a stated annual term, set on the declarations page.
- Defense costs. Depending on the form, defense is paid inside the limit, which shrinks what is left for damages, or outside it.
- Endorsements. These can expand, restrict, redefine or allocate coverage.
Higher limits, broader coverage, lower deductibles and added endorsements generally affect the premium, though the amount depends on underwriting and the form. A retroactive date belongs to claims-made coverage, not to an ordinary occurrence policy.
Occurrence versus claims-made coverage
A claims-made policy generally responds when the claim is first made during the policy period or an extended reporting period, subject to any retroactive date, according to the NAIC's medical malpractice insurance overview (opens in a new tab). Tail coverage, or an extended reporting period, lets certain claims first made after the policy ends count as made during the term; it changes the reporting window, not the date of the event, according to New York DFS Opinion 02-01-15 (opens in a new tab). Moving from claims-made to occurrence coverage can leave a gap for earlier acts unless prior-acts, tail or other transition coverage applies.
Where you see the term
The label appears most often on general liability insurance, products and completed-operations liability, professional liability insurance and medical malpractice coverage. The liability sections of auto, homeowners, renters and condo policies can work the same way without using the label. Life, ordinary health and most pet insurance do not use the occurrence-versus-claims-made distinction.
You meet it on quotes, binders, declarations pages, coverage forms, endorsements, renewal notices and claim letters. A certificate of insurance often has a box marked "occurrence" or "claims-made," as on the Connecticut certificate of liability insurance form (opens in a new tab), but a certificate summarizes coverage and does not replace the policy. In New York, a claims-made policy must say so prominently on the application and declarations page, including its retroactive date and reporting period, under 11 NYCRR § 73.7 (opens in a new tab).
Questions to ask an agent or insurer
- If the injury or damage happens during this policy term but the claim arrives after renewal or cancellation, which policy period responds? This tests the trigger instead of relying on a label.
- Is the coverage occurrence-based or claims-made, and where does the declarations page or coverage form say so? The designation decides which event places a claim within the policy.
- What are the each-occurrence, aggregate and products-completed operations limits, and do defense costs reduce them? These figures set how much remains after one or more claims.
- Do any exclusions or endorsements change how completed work, known circumstances, prior acts, professional services or intentional conduct are treated? The occurrence trigger does not override them.
- If I change insurers or switch from claims-made to occurrence, what happens to earlier acts, open claims and incidents I already know about? A change can create a gap unless prior-acts or extended reporting coverage applies.
Frequently asked questions
These answers cover what policyholders ask when a late claim or a contract requirement brings up the term.
Do I need tail coverage with an occurrence policy?
Ordinary occurrence coverage does not need tail coverage for covered occurrences during its own policy period. Tail coverage is tied to claims-made policies. If you are leaving a claims-made policy, ask whether tail or prior-acts coverage is needed for the years it covered.
Does occurrence coverage pay every claim from the policy year?
No. The loss must fall within the insuring agreement, avoid the exclusions, meet the policy's conditions and stay within the limits that remain. Damage to your own work, for example, can be excluded even when the event happened in the right year.
Will my current insurer handle a claim about an old accident?
Usually the policy in force when the injury or damage occurred is the relevant one, subject to its wording and state law. Give that insurer prompt notice, because late notice or a failure to cooperate can lead to coverage disputes.
What should I check when a contract requires occurrence coverage?
Confirm that the declarations page or coverage form shows occurrence wording and that the per-occurrence and aggregate limits meet the contract, such as the $3,000,000 and $3,000,000 in the Connecticut example. A certificate is evidence of insurance only, so ask for the policy form if the customer needs proof of the trigger. The guide to Connecticut umbrella insurance covers adding limits above a liability policy.