Definition:Primary and noncontributory
📋 Primary and noncontributory is a provision in a commercial general liability or other liability insurance policy that requires the insurer's coverage to respond first to a covered claim and to do so without seeking contribution from another party's insurance. The clause most commonly appears in contracts between businesses — construction agreements, vendor contracts, and lease arrangements — where one party demands that the other's policy sit in the primary position so that the demanding party's own coverage remains untouched unless the primary limits are exhausted.
🔧 In practice, a subcontractor's CGL policy endorsed as primary and noncontributory with respect to a general contractor means that if a bodily injury or property damage claim arises from the subcontractor's work, the subcontractor's insurer pays first. Crucially, it also waives the right to invoke other insurance clauses that would ordinarily force the general contractor's carrier to share the loss on a pro-rata or excess basis. The endorsement is typically paired with an additional insured endorsement, since the party being protected needs to be a named interest on the responding policy for the arrangement to function. Underwriters evaluate these requests carefully because granting primary and noncontributory status increases the likelihood and size of payouts from the endorsing insurer's perspective.
⚠️ Failure to secure this language — or to attach the correct endorsement — is one of the most common gaps discovered during certificate of insurance reviews and post-loss coverage litigation. When the endorsement is missing, insurers on both sides may dispute payment priority, delaying claims settlement and exposing the upstream party to unexpected out-of-pocket costs. For risk managers and brokers, verifying that primary and noncontributory wording is properly endorsed rather than merely referenced in a contract is an essential part of the contract review process, protecting clients from coverage gaps that surface at the worst possible time.
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