Somewhere in nearly every commercial lease and subcontract sits the same sentence: “Contractor shall name Owner as additional insured on a primary and noncontributory basis.” If that reads like another language, this article is the translation.
What’s actually being asked
When a landlord or GC asks to be an additional insured, they want protection under your liability policy for claims that arise out of your work or your use of their property. The logic is fair enough: if your operations injure someone, the injured party will sue everyone in sight, including the landlord or GC, and those parties want your insurance defending them for your part of the mess.
This is accomplished by endorsement, a formal modification to your general liability policy. Some policies include blanket additional insured wording that automatically covers parties you agree to cover in a written contract; others add each party individually. Either can work. What doesn’t work is a name typed into the certificate holder box with no endorsement behind it, which is unfortunately common and protects nobody.
The details that make certificates pass or fail
Contract insurance sections have grown precise, and certificate reviewers check the fine print. The recurring demands:
Specific endorsement forms. Construction contracts often require coverage for both ongoing and completed operations, sometimes naming exact form numbers. If your policy only covers ongoing operations, a claim that surfaces after job completion may leave the GC unprotected, and your certificate may be rejected upfront.
Primary and noncontributory wording, meaning your policy responds first. Waiver of subrogation, meaning your carrier won’t chase the other party to recoup payments. Both are normally available by endorsement, and both should be confirmed before you sign the contract promising them.
The practical workflow
The clean sequence: read the insurance requirements before signing (or send them to your broker, which is what we’re here for), confirm your policy can deliver each item, then issue the certificate with the right endorsements attached. Done in that order, the whole thing takes little time. Done in reverse, after a certificate rejection has stalled your start date, it’s a scramble, and occasionally the policy you bought can’t do what the contract promised.
One more honest note: additional insured status spends your policy limits on someone else’s defense. That’s the deal you’re agreeing to, and for most businesses it’s a routine cost of working with bigger parties. But it’s a reason to consider whether your limits still fit your contract load; an umbrella policy is often the answer.
Got a contract with an insurance section you’d rather not decode alone? Send it over. Reading these is a normal part of our work.