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📋 '''Other insurance clause''' is a [[Definition:Policy provision | policy provision]] found in virtually every [[Definition:Insurance policy | insurance policy]] that dictates how coverage responsibilities are allocated when two or more policies cover the same [[Definition:Loss | loss]]. Because individuals and businesses frequently maintain overlapping [[Definition:Insurance coverage | coverages]] — a commercial tenant's [[Definition:General liability insurance | general liability policy]] and a landlord's policy may both respond to the same slip-and-fall [[Definition:Claim | claim]], for instance — insurers include these clauses to prevent [[Definition:Double recovery | double recovery]] by the [[Definition:Insured | insured]] and to establish an orderly framework for apportioning [[Definition:Indemnity | indemnity]] obligations among responding carriers.

⚖️ These clauses typically follow one of three models: pro rata, excess, or escape. Under a pro-rata approach, each insurer pays a share of the loss proportional to its [[Definition:Policy limit | policy limit]] relative to the total available limits. An excess clause positions a policy to respond only after the other applicable policy has been exhausted, effectively treating the second policy as a layer above the first. An escape clause attempts to eliminate the insurer's liability altogether when other valid coverage exists. Complications arise — and frequently end up in litigation — when two policies contain conflicting other insurance clauses, such as when both attempt to be excess over the other. Courts have developed various doctrines to resolve these standoffs, and [[Definition:Underwriter | underwriters]] must draft their clauses with an awareness of how jurisdictions in their [[Definition:Book of business | book of business]] tend to rule.

🧩 Getting other insurance clauses right has meaningful financial consequences for carriers. Poorly coordinated clauses can result in an insurer bearing a disproportionate share of a loss, eroding its [[Definition:Loss ratio (L/R) | loss ratio]] on an otherwise properly priced risk. For [[Definition:Managing general agent (MGA) | MGAs]] and [[Definition:Program administrator | program administrators]] designing coverage programs, understanding how their policies interact with [[Definition:Primary insurance | primary]], [[Definition:Umbrella insurance | umbrella]], and [[Definition:Excess insurance | excess]] layers is essential to avoid coverage disputes that slow [[Definition:Claims settlement | claims settlement]] and damage client relationships. Brokers, meanwhile, must review these provisions during [[Definition:Policy review | policy reviews]] to ensure clients are not paying for overlapping coverage that neither policy will honor without a fight.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Primary insurance]]
* [[Definition:Excess insurance]]
* [[Definition:Contribution]]
* [[Definition:Subrogation]]
* [[Definition:Policy provision]]
* [[Definition:Double insurance]]
{{Div col end}}

Definition:Other insurance clause - Revision history

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