How a Primary and Noncontributory Clause Works

A primary and noncontributory clause changes how responsibility is shared between insurance policies when more than one policy could apply to a claim. The primary portion means your insurance is the first to respond to a covered clai and it pays before any other applicable insurance. The noncontributory part essentially says the additional insured’s insurance does not share in the loss and their policy is not used unless your policy limits are fully exhausted.

In a real world scenario it'd look something like this:

  • You perform work for a third party
  • That party is added as an additional insured on your policy
  • Your policy includes a primary and noncontributory clause
  • A claim occurs related to your work
  • Your policy pays first, and the other party’s policy is not required to contribute

So, in other words, clients tend to use this to shift more of the risk to your end so they can save money in the event of a claim. It is also paired with an additional insured clause to further insulate for risk.

Which Business Insurance Policies Use a Primary and Noncontributory Clause

Primary and noncontributory wording is most commonly tied to liability coverage that can include these three policy types:

General Liability Insurance
Yes (most common)
Ensures your policy responds first for claims involving additional insureds tied to your work.
Commercial Auto Insurance
Sometimes
May apply to liability coverage depending on endorsements and contract requirements.
Professional Liability Insurance
Rare
Usually does not include this structure due to how professional risk is covered.

When a Primary and Noncontributory Clause Is Required

You'll typically only need a primary and noncontributory clause most often in these scenarios:

  • Client agreements: Clients require your policy to respond first for claims tied to your work
  • Commercial leases: Landlords often require tenants to carry primary coverage
  • Construction contracts: General contractors require subcontractors to assume primary responsibility
  • Vendor agreements: Businesses may require vendors to carry primary and noncontributory coverage

About Connor Bolton


Connor Bolton, Senior SEO and Content Manager (Business & Pet), MoneyGeek

Connor Bolton is Senior SEO and Content Manager at MoneyGeek, where he leads the business and pet insurance editorial teams. He sets the research framework, data standards and content structure for his team. All content goes through his accuracy review before publication. Connor also writes in-depth guides and has spent more than four years covering insurance products across personal, commercial and specialty lines.

The research infrastructure Connor built covers auto, home, renters, life, health, business and pet insurance across pricing analysis, carrier research, customer experience and coverage evaluation. It includes over 6 million data points for business insurance across 408 industry areas, all 50 states and 16 vehicle types. The pet insurance side covers over 5 million profiles across 18 major providers, 100+ breeds and ages up to 20 years. Connor’s insurance research and his team's work has been cited by the U.S. Chamber of Commerce, Allstate, Liberty Mutual, CBS News, Forbes and LegalZoom.

Connor also talks with underwriters and carrier liaisons at Ethos, The Hartford, ERGO NEXT, Nationwide and State Farm, and monitors business and pet owner communities on Reddit. Those sources shape how his team evaluates carriers, structures rate analysis and writes for human buyers rather than search engines.

For questions about MoneyGeek's business and pet insurance content, contact him at connor@moneygeek.com or on LinkedIn.