Claims-made and occurrence policies.
How each policy form responds when you change jobs, change carriers, or retire.
Two physicians can provide the same care on the same day and face different reporting paths after a job change. The answer begins with the policy form, then depends on the policy's insuring agreement, definitions, dates, insureds, exclusions, limits, and reporting conditions. These differences matter most when a physician changes jobs, carriers, entities, or practice status.
How an occurrence policy works
An occurrence policy can respond to a qualifying claim arising from covered care during its policy period, even if the claim arrives later. Its insuring agreement, exclusions, limits, insured status, and notice duties still apply.
For example, assume an occurrence policy covered all of 2026. A patient makes a covered claim in 2029 about care from 2026. The 2026 policy can cover that claim.
An occurrence policy normally does not need tail coverage when it ends for qualifying care during its term. Keep the old policy, declarations, endorsements, and reporting contact because that old policy may still be the route to a later claim.
How a claims-made policy works
A claims-made policy uses a reporting trigger. A claim must meet the policy definition, concern covered professional services on or after the retroactive date, be made and reported as the policy requires, and satisfy other conditions.
The care must also occur on or after the retroactive date. This date is the earliest care that the policy can cover.
For example, a policy may run through 2026 with a January 1, 2022, retroactive date. It can address qualifying claims reported in 2026 about covered care since that date.
When a new claims-made policy begins with its retroactive date at inception, its early terms may be priced below its mature rate because the covered prior-work period is shorter. A carrier can use a different rating approach, and a policy with accepted prior acts can begin at a mature rate. Ask for the exact renewal and maturity schedule for the quoted form; do not treat a first-year quote as its long-term cost.
A claims-made policy needs coverage for prior work
The ordinary reporting period ends when a claims-made policy ends, unless another provision extends it. Earlier care can still produce a later claim. The physician or entity needs a prior-care solution only if qualifying later claims need coverage and no continuing policy or reporting provision supplies it.
Two common approaches are tail coverage from the prior carrier and prior-acts coverage from the new carrier.
Prior-acts coverage is sometimes called nose coverage. The new policy must show the correct retroactive date and actually extend its coverage to the relevant physician, entity, and services.
The two choices are not interchangeable. A tail generally leaves the old policy's insured definitions, limits, exclusions, aggregate treatment, and reporting terms in place. Prior-acts coverage subjects earlier care to the new policy's terms and may exclude known matters, former entities, or services. Match each insured and entity, retroactive date, known-matter language, professional-services scope, limits, aggregate, reporting destination, and deadline before treating either option as a solution.
A tail extends time to report qualifying earlier work; it does not cover new services after the old policy ends. Prior-acts coverage can move qualifying earlier work to the new policy, but it may not replace the old carrier's notice route for a known claim or reported circumstance. Before a change, review every open demand, board notice, adverse event, patient complaint, and prior written circumstance notice. Follow the old policy's notice instructions; do not wait for a new insurer to decide whether it accepts prior acts.
Follow one claim through both forms
Assume Dr. Lee treated a patient on June 1, 2026. The patient first makes a written claim on October 1, 2028.
| Coverage arrangement | Potential reporting route |
|---|---|
| Occurrence policy active on June 1, 2026 | The 2026 occurrence policy, subject to its terms |
| Claims-made-and-reported policy in force when the claim is first made and reported, with a retroactive date before June 1, 2026 | That policy, if its terms permit it |
| 2026 claims-made policy followed by its tail endorsement | The old policy and tail reporting arrangement, subject to its terms |
| New claims-made policy with accepted prior acts to the original retroactive date | The new policy, if it is in force and its terms permit it |
| Claims-made policy ended, no tail, and new retroactive date starts after the care | Neither claims-made arrangement shown covers the 2026 care |
The last row shows a gap between the two claims-made arrangements. Another policy or endorsement could change the result. The policy dates can appear continuous even when the two listed arrangements do not cover the earlier care.
How to compare the forms
Compare the full expected period, not only the first premium. Include the claims-made maturity schedule, any tail obligation, and the chance that a future carrier will not accept all prior acts.
Review these items before you choose:
- Identify the policy form.
- Record the retroactive date.
- Confirm the claim reporting requirements.
- Ask who pays for tail coverage.
- Ask whether a new carrier can cover prior acts.
- Compare limits, exclusions, and defense provisions.
An employment contract can allocate a tail cost between a physician and an employer. It cannot create a tail or alter the policy. Put the payer, triggering event, required form, required limit, election deadline, and proof of purchase in the signed contract, then compare it with the actual policy terms.
Employer-provided coverage needs the same analysis. Request evidence of the form, limits, retroactive date, named insureds, and tail responsibility.
Keep that evidence after employment ends. A certificate is a snapshot, not a coverage grant. The declarations, policy, endorsements, and tail or prior-acts document are needed to reconstruct the date sequence.
Compare claims-made and occurrence costs with one filed carrier example.
Compare the full cost, expected job changes, reporting rules, and written responsibility for prior care. Repeat this review before each job change, carrier change, practice sale, and retirement.