PlumBot: Bot: Creating new article from JSON

2026-03-15T16:29:09Z

Bot: Creating new article from JSON

New page

🔗 '''Claims aggregation''' is the process of grouping multiple individual [[Definition:Claims | claims]] arising from a single event, common cause, or related set of circumstances into a collective unit for the purposes of [[Definition:Reinsurance | reinsurance]] recovery, [[Definition:Policy limit | policy limit]] application, or [[Definition:Reserving | reserving]]. In insurance and reinsurance, the ability to aggregate claims — and the contractual rules governing when aggregation is permitted — can dramatically alter the financial outcome for both the [[Definition:Ceding company | ceding company]] and the [[Definition:Reinsurance | reinsurer]], determining whether a multitude of small losses transforms into a single large loss that pierces an [[Definition:Excess of loss reinsurance | excess of loss]] attachment point.

⚙️ Aggregation operates through clauses typically found in reinsurance contracts, [[Definition:Excess of loss reinsurance | excess of loss]] treaties, and certain primary [[Definition:Insurance policy | insurance policies]], particularly in [[Definition:Professional indemnity insurance | professional indemnity]], [[Definition:Cyber insurance | cyber]], and [[Definition:Liability insurance | liability]] lines. An aggregation clause — sometimes called a "hours clause" in [[Definition:Property insurance | property catastrophe]] reinsurance, limiting the window within which losses from a single event can be combined — defines the criteria for linking individual claims into a single [[Definition:Loss occurrence | loss occurrence]]. In the [[Definition:London market | London market]], disputes over aggregation have produced landmark case law, because the language connecting claims ("arising out of one event," "originating from one cause," or "a series of related acts") can be interpreted broadly or narrowly with very different financial consequences. For [[Definition:Catastrophe risk | catastrophe]] scenarios, aggregation is relatively intuitive — a hurricane generates thousands of individual property claims that clearly stem from one event. In liability and financial lines, however, the question of whether hundreds of claims stemming from a defective product, a regulatory failure, or a cyber breach constitute one aggregated loss or many separate ones is fiercely contested.

💡 Proper treatment of claims aggregation directly affects an insurer's [[Definition:Net retained liability | net retention]], reinsurance recoveries, and capital position. If an insurer successfully aggregates numerous small claims into a single occurrence, it may breach the retention on its excess of loss cover and shift a significant portion of the loss to reinsurers. Conversely, reinsurers have a financial incentive to resist broad aggregation when it increases their exposure. The growing interconnectedness of risks — exemplified by systemic [[Definition:Cyber insurance | cyber]] events or pandemic-related business interruption claims — has pushed aggregation into the spotlight as an area requiring clearer contractual drafting and, in some markets, regulatory guidance. Actuarial teams and [[Definition:Enterprise risk management (ERM) | risk managers]] increasingly model aggregation scenarios explicitly in their [[Definition:Capital model | capital models]], recognizing that the rules governing how claims cluster can be as consequential as the frequency and severity of the underlying losses themselves.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Loss occurrence]]
* [[Definition:Excess of loss reinsurance]]
* [[Definition:Hours clause]]
* [[Definition:Catastrophe risk]]
* [[Definition:Cyber insurance]]
* [[Definition:Event definition]]
{{Div col end}}

Definition:Claims aggregation - Revision history

PlumBot: Bot: Creating new article from JSON