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🏛️ '''Layered reinsurance program''' is a structured arrangement in which a [[Definition:Cedent | ceding insurer]] divides its reinsurance protection into multiple successive [[Definition:Layer (insurance) | layers]], each attaching at the point where the layer below exhausts, to distribute [[Definition:Ceded risk | ceded risk]] across different [[Definition:Reinsurer | reinsurers]] or panels of reinsurers according to the specific loss characteristics of each band. This architecture is the dominant model for organizing [[Definition:Excess of loss reinsurance | excess-of-loss]] protection in both property and casualty reinsurance worldwide, allowing cedents to match risk transfer with capacity from participants best suited to absorb losses at each level. A mid-size insurer, for instance, might retain losses up to a specified [[Definition:Retention | retention]], cede the next tranche to a panel of regional reinsurers in a working layer, and place higher excess layers with global reinsurers or through the [[Definition:Lloyd's of London | Lloyd's]] market and [[Definition:Retrocession | retrocession]] markets, potentially extending into a catastrophe layer at the top of the tower.

⚙️ Each layer in the program is negotiated with its own rate, terms, reinstatement provisions, and coverage conditions. Working layers — those closest to the cedent's retention — experience more frequent losses and are priced at higher [[Definition:Rate on line (ROL) | rates on line]], reflecting the greater probability that they will be penetrated. Higher excess and [[Definition:Catastrophe excess of loss reinsurance | catastrophe layers]] attach at elevated thresholds, respond less frequently, and typically carry lower rates on line but can involve very large limits. [[Definition:Broker | Reinsurance brokers]] manage the placement process, designing the layer structure to optimize the cedent's cost of risk transfer while ensuring each layer is adequately subscribed. Participation within a single layer is often shared among multiple reinsurers, each taking a percentage [[Definition:Line (reinsurance) | line]], and the broker negotiates a [[Definition:Slip | slip]] that formalizes the terms. Coordination across layers demands meticulous attention to interlocking conditions — including [[Definition:Hours clause | hours clauses]] for catastrophe layers, [[Definition:Loss occurrence definition | loss occurrence definitions]], and [[Definition:Reinstatement | reinstatement]] mechanics — to prevent gaps or disputes when a large event penetrates multiple layers simultaneously.

📊 The strategic value of a layered reinsurance program lies in its ability to align risk transfer with the cedent's [[Definition:Capital management | capital management]] objectives, regulatory requirements, and [[Definition:Risk appetite | risk appetite]]. Under [[Definition:Solvency II | Solvency II]] in Europe, reinsurance credit directly reduces the [[Definition:Solvency capital requirement (SCR) | SCR]], and the structure of the program influences how much capital relief the cedent achieves. Under the [[Definition:Risk-based capital (RBC) | RBC]] framework in the United States and China's [[Definition:C-ROSS | C-ROSS]], similar considerations apply. Rating agencies such as [[Definition:AM Best | AM Best]], [[Definition:S&P Global Ratings | S&P]], and [[Definition:Moody's | Moody's]] evaluate the quality and structure of a company's reinsurance program when assigning [[Definition:Financial strength rating | financial strength ratings]], paying particular attention to the creditworthiness of reinsurers at each layer and the adequacy of coverage limits relative to probable maximum loss scenarios. As catastrophe models evolve, [[Definition:Cedent | cedents]] and their brokers continuously re-optimize the layering — adjusting retentions, shifting attachment points, incorporating [[Definition:Aggregate excess of loss reinsurance | aggregate]] covers, and blending traditional reinsurance with [[Definition:Insurance-linked securities (ILS) | insurance-linked securities]] — to build programs that are both cost-efficient and resilient under a range of loss scenarios.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Layer (insurance)]]
* [[Definition:Excess of loss reinsurance]]
* [[Definition:Rate on line (ROL)]]
* [[Definition:Catastrophe excess of loss reinsurance]]
* [[Definition:Retention]]
* [[Definition:Reinstatement]]
{{Div col end}}

Definition:Layered reinsurance program - Revision history

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