PlumBot: Bot: Creating new article from JSON

2026-03-10T13:59:44Z

Bot: Creating new article from JSON

New page

🏗️ '''Tower''' in insurance refers to a layered structure of [[Definition:Insurance coverage | coverage]] in which multiple [[Definition:Insurance carrier | carriers]] or [[Definition:Reinsurance | reinsurers]] stack their policies vertically, each responsible for a discrete band of loss above a specified [[Definition:Attachment point | attachment point]]. This architecture is most commonly found in large [[Definition:Commercial insurance | commercial]] and [[Definition:Specialty insurance | specialty]] programs — such as [[Definition:Excess liability insurance | excess liability]], [[Definition:Directors and officers liability insurance (D&O) | D&O]], and [[Definition:Property insurance | property]] catastrophe placements — where the total limits required by the [[Definition:Policyholder | insured]] exceed what any single carrier is willing or able to provide.

🔧 A typical tower begins with a [[Definition:Primary insurance | primary layer]] that responds first once the insured's [[Definition:Retention | retention]] or [[Definition:Deductible | deductible]] is exhausted. Above that sit one or more [[Definition:Excess insurance | excess layers]], each triggered only when the layer beneath is fully eroded by losses. For example, a $100 million liability tower might consist of a $10 million primary policy, followed by successive excess layers of $15 million, $25 million, and $50 million, each written by a different [[Definition:Underwriter | underwriter]] or group of underwriters. [[Definition:Insurance broker | Brokers]] play a central role in constructing towers, negotiating terms, pricing, and participation percentages — especially in the [[Definition:London market | London market]] and [[Definition:Bermuda market | Bermuda market]], where complex placements are routine. The [[Definition:Premium | premium]] for each layer generally decreases as the attachment point rises, reflecting the declining probability that losses will reach those higher strata.

🧩 Well-designed towers distribute risk efficiently across the market and enable insureds to secure limits that no individual carrier would shoulder alone. However, towers also introduce coordination challenges: differences in policy wording between layers can create gaps or disputes over which carrier owes what when a loss spans multiple layers. The phenomenon of [[Definition:Vertical exhaustion | vertical exhaustion]] — whether a lower layer must be completely paid out before the next layer attaches — has generated significant litigation. For insurers, where a company positions itself in the tower reflects its risk appetite: writing lower layers offers higher [[Definition:Premium | premium]] volume but greater expected loss, while upper layers provide thinner premiums with correspondingly rarer exposure. Understanding tower dynamics is essential for anyone involved in large-account [[Definition:Underwriting | underwriting]], [[Definition:Reinsurance | reinsurance]] purchasing, or [[Definition:Claims management | claims]] coordination.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Tower of insurance]]
* [[Definition:Excess insurance]]
* [[Definition:Primary insurance]]
* [[Definition:Attachment point]]
* [[Definition:Layered program]]
* [[Definition:Quota share]]
{{Div col end}}

Definition:Tower - Revision history

PlumBot: Bot: Creating new article from JSON