A professional advisory firm completes a design package in 2022. A client discovers an alleged error in 2026 and brings a claim. Whether the firm’s insurance can respond may turn less on when the work was performed than on the policy trigger in force when the claim was made. That is the practical difference behind occurrence versus claims made policies – and it can become a significant continuity issue when businesses renew, change insurer or cease an activity.
For directors, finance leaders and risk managers, this is not merely insurance terminology. The wrong assumption can leave historic work, contracts or operations exposed at the point a serious allegation emerges.
Occurrence versus claims made policies: the core difference
An occurrence policy is generally triggered by an event, injury or damage that takes place during the period of insurance. If the underlying incident occurred while the policy was in force, the policy from that period may be relevant, even if the claim is only reported years later. Public liability and products liability covers are commonly structured on this basis, although the actual trigger always depends on the wording.
A claims made policy is generally triggered when a claim is first made against the insured and notified to the insurer during the policy period. The alleged act, error or omission may have happened earlier, provided it falls after any applicable retroactive date and other policy conditions are met. Professional Indemnity insurance and many management liability covers are commonly issued on a claims made basis.
The distinction changes the question a business must ask. With occurrence cover, the starting point is often: when did the incident happen? With claims made cover, it is usually: when was the claim first made and when was it notified?
Neither structure is automatically better. Each is designed for a different liability pattern. The risk lies in treating them as interchangeable, especially where the business has long project cycles, professional advice liabilities, products that remain in the market for years, or contractual duties that survive completion.
Why claims made cover demands continuity
Claims made insurance places particular value on uninterrupted cover. Consider an engineering consultant that has maintained Professional Indemnity insurance for several years. At renewal, it moves to a new insurer and accepts a retroactive date of the renewal date to reduce premium. A claim later arises from a design issued three years earlier. Although the claim is made during the new policy period, work before the retroactive date may not fall within the new policy’s scope.
A continuous retroactive date, often described as the retroactive date or prior acts date, is therefore central to reviewing Professional Indemnity arrangements. It identifies how far back the policy may respond to otherwise covered acts, errors or omissions. In some cases, cover may be written without a retroactive date limitation, but that should never be assumed.
Prior knowledge is equally important. If a business was aware of circumstances that might reasonably be expected to give rise to a claim before a new policy began, the new insurer may exclude that matter. The existing policy may instead require notification of the circumstances during its own period of insurance. Delayed internal escalation can turn a manageable notification issue into a disputed coverage position.
This is why a renewal discussion should involve more than turnover, fee income and a premium comparison. It should examine open complaints, project disputes, defects, missed milestones, adverse correspondence, regulatory enquiries and any incident that could develop into an allegation. A notification is not an admission of liability. It is a step that may be required to preserve the position under the policy terms.
Where occurrence policies can create their own challenges
Occurrence cover can appear more straightforward because the historic policy is tied to the date of the incident. Yet it creates a different administrative burden. A liability claim reported today may need to be referred to an insurer that provided cover several years ago, under wording and limits that applied at that time.
Businesses should retain historic policy schedules, wordings, endorsements, certificates, renewal correspondence and details of insurer changes. This matters for manufacturers facing long-tail products liability allegations, contractors dealing with third-party property damage claims, and logistics operators whose incidents may involve multiple parties and delayed recovery actions.
It may also be difficult to determine when the relevant occurrence took place. Was it the date defective work was performed, the date damage began, or the date damage became apparent? Policy language and the facts can be decisive. Complex matters should be reviewed early rather than allocated to an insurer based on an assumption.
The transition risks leaders should test before renewal
The greatest exposure frequently arises during change: a new insurer, reduced limit, altered business activity, acquisition, disposal, project completion or business closure. Before changing a liability programme, decision-makers should test four connected issues:
- Retroactive protection: Does the new claims made policy preserve the required retroactive date and cover past professional activities?
- Notification discipline: Are potential claims and circumstances being identified and reported in line with the current policy conditions?
- Run-off needs: If the business, a division or a project is ending, is run-off cover needed for claims first made after the policy expires?
- Contractual requirements: Do client agreements, leases, concessions or financing arrangements prescribe a period of Professional Indemnity or other liability cover after completion?
Run-off cover deserves careful attention in Singapore’s project and professional-services environment. A firm may stop trading, merge or cease providing a particular service, but allegations relating to earlier work can still arrive later. Run-off insurance is intended to address claims first made during an agreed period after the active policy ends, subject to its terms. It is not the same as cancelling a policy and hoping historic work remains protected.
The right duration depends on the nature of the work, contractual obligations, limitation periods, the potential time between completion and discovery, and the firm’s risk appetite. Design, engineering, construction management and specialist consultancy may require a longer view than a short transactional engagement.
Professional Indemnity: questions that reveal the real position
For businesses buying or renewing Professional Indemnity insurance, the proposal and renewal process should reflect what the organisation actually does. A policy arranged around a broad but outdated business description may fail to address emerging services, overseas assignments, sub-consultant exposures, contractual assumptions of liability or technology-enabled advice.
Senior leaders should be able to answer several practical questions. What is the earliest retroactive date available, and has it remained continuous? Has the business notified all known circumstances that warrant notification? Are former entities, predecessor firms, retired directors or employees included where relevant? Do contracts impose indemnities or fitness-for-purpose obligations that exceed the intended cover? Is the limit sufficient for a single major allegation as well as related defence costs, where those costs sit within the limit?
These are not questions to leave until an allegation arrives. A risk adviser can help translate policy mechanics into the organisation’s operational reality, including project timelines, client terms, service changes and claims reporting procedures.
Policy wording decides the outcome, not the label
“Occurrence” and “claims made” are useful labels, but they do not replace a careful review of the policy. Definitions of claim, circumstance, wrongful act, occurrence and notification may vary. Defence costs, aggregation provisions, territorial limits, jurisdiction clauses, excesses and exclusions can materially alter the protection available.
A claim may involve several policies, multiple insured parties or allegations spanning more than one period of insurance. Prompt preservation of records, internal reporting and early engagement with the relevant insurer or insurers are often as important as identifying the correct policy type.
No article can determine whether a particular claim will be covered. Coverage depends on the quotation, schedule, policy wording, endorsements, exclusions, limits and the facts of the claim. However, the policy trigger should be understood before a contract is signed, a renewal is accepted or an insurer is changed.
Kloon Risk Management approaches this review as a business-continuity exercise, not a price-only purchasing decision. The objective is to make the connection between how your organisation operates, where allegations could emerge and how the insurance programme is expected to respond.
The most useful action is simple: before the next renewal, place your current and previous liability policies beside your project register, contract obligations and incident log. The gaps worth addressing are usually visible well before they become expensive.
For further information, call +65 6241 3767, contact us on WhatsApp, or email enquiry@kloonrisk.com.
