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🛡️ '''Primary liability insurance''' is the first layer of [[Definition:Liability insurance | liability coverage]] that responds when a [[Definition:Policyholder | policyholder]] faces a [[Definition:Claim | claim]] or lawsuit alleging that they caused bodily injury, property damage, or other covered harm to a third party. It sits at the base of a liability insurance program, paying from the first dollar of covered loss (above any applicable [[Definition:Deductible | deductible]] or [[Definition:Self-insured retention (SIR) | self-insured retention]]) up to the policy's stated [[Definition:Policy limit | limits]]. In virtually every insurance market worldwide — from US [[Definition:Commercial general liability insurance (CGL) | commercial general liability]] to UK [[Definition:Public liability insurance | public liability]] to equivalent products across Asia and the Middle East — the primary layer represents the core liability protection that businesses and individuals purchase before considering additional capacity through [[Definition:Excess insurance | excess]] or [[Definition:Umbrella insurance | umbrella]] layers.

🔧 When a covered event triggers a primary liability policy, the insurer typically assumes two obligations: the [[Definition:Duty to defend | duty to defend]] the insured against the claim and the [[Definition:Duty to indemnify | duty to indemnify]] — that is, to pay damages up to the policy limit if liability is established. Defense costs may be included within the policy limit or payable in addition to it, depending on the policy form and jurisdiction — a distinction with significant financial implications, especially for claims involving protracted litigation. In the US market, the standard [[Definition:Insurance Services Office (ISO) | ISO]] CGL form provides defense costs outside the limit, whereas many [[Definition:Professional liability insurance | professional liability]] and [[Definition:Directors and officers liability insurance (D&O) | D&O]] policies erode the limit with defense spending. In international programs, [[Definition:Multinational insurance program | multinational insurers]] coordinate primary liability policies across jurisdictions through local [[Definition:Admitted insurance | admitted]] policies issued in each country, ensuring compliance with local compulsory insurance requirements and regulatory standards.

💡 Understanding the role of primary liability insurance is essential for constructing a sound insurance program, particularly for organizations with significant liability exposures. The primary layer's limits, [[Definition:Policy exclusion | exclusions]], and trigger mechanisms determine when and whether [[Definition:Excess insurance | excess carriers]] above it will respond — gaps or ambiguities in the primary policy can leave the insured without coverage even when substantial excess towers sit above. [[Definition:Insurance broker | Brokers]] and [[Definition:Risk manager | risk managers]] carefully negotiate primary terms because these effectively set the foundation for the entire liability program. In [[Definition:Hard market | hard market]] conditions, primary liability capacity can tighten dramatically, forcing buyers to accept higher retentions, reduced limits, or restrictive sublimits for specific exposures like [[Definition:Cyber insurance | cyber]] or [[Definition:Abuse and molestation liability | abuse and molestation]]. The pricing and availability of primary liability coverage thus serves as a bellwether for the broader health and discipline of liability insurance markets globally.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Excess insurance]]
* [[Definition:Umbrella insurance]]
* [[Definition:Commercial general liability insurance (CGL)]]
* [[Definition:Self-insured retention (SIR)]]
* [[Definition:Duty to defend]]
* [[Definition:Policy limit]]
{{Div col end}}

Definition:Primary liability insurance - Revision history

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