What does primary and non-contributory mean?
When you're an additional insured on a vendor's policy AND you carry your own insurance, a question arises the day of a claim: whose policy pays first? 'Primary and non-contributory' (P&NC) wording answers it in your favor — the vendor's policy pays first (primary) and cannot demand your policy chip in (non-contributory).
Without P&NC, both insurers can invoke 'other insurance' clauses and share the loss — which puts a claim on YOUR loss history and premiums for an incident your vendor caused.
How P&NC is actually granted
Like every meaningful COI protection, P&NC lives in the policy wording, not the certificate. Common vehicles:
- CG 20 01 04 13 — ISO's 'Primary and Noncontributory — Other Insurance Condition' endorsement.
- P&NC wording embedded in a carrier's proprietary additional insured endorsement.
- Policy provisions that grant primary status where a written contract requires it.
Verifying P&NC on a certificate
A sentence in the ACORD description box ('coverage is primary and non-contributory') is the agent's assertion, not the policy's. Confirm the endorsement is attached — form number, matching policy number — or request the policy provision. Note that P&NC only helps parties who are additional insureds in the first place: verify the AI endorsement alongside it.
Frequently asked questions
Does primary and non-contributory apply automatically?
No. Standard policies make coverage excess or pro-rata when other insurance exists. P&NC status must be granted by endorsement or specific policy wording — usually triggered by a written contract requiring it.
Do I need P&NC and a waiver of subrogation?
They solve different problems: P&NC controls whose policy pays first; the waiver stops the vendor's insurer from recovering against you afterwards. Well-drafted contracts typically require both, plus additional insured status.
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