Vendor Selection

Reading a Contractor's Certificate of Insurance: Limits, Additional Insured, and Waiver of Subrogation

Part of the guide Vendor Selection, Compliance, and Procurement

The short answer

Check that every policy your contract requires is listed, current and at or above your required limits; that your property and entities are named correctly; and that additional insured, waiver of subrogation and primary and non-contributory terms are backed by the endorsements, not just mentioned. This is general information; your risk manager and counsel set the requirements.

The form

Most US certificates use the ACORD 25 form. It states that it is issued as a matter of information only and confers no rights on the certificate holder. That is why endorsements matter.

Section by section

SectionWhat to check
Producer and insuredThe insured matches the legal name on your contract
PoliciesGeneral liability, automobile liability, workers compensation and umbrella or excess, as your contract requires
Policy datesCurrent, with renewals tracked before expiration
LimitsEach occurrence and aggregate limits at or above your requirements
Additional insured boxChecked where required, with the endorsement attached
Waiver of subrogation boxChecked where required, with the endorsement attached
Description of operationsNames your property and entities and references the contract terms
Certificate holderYour correct legal entity and address

Additional insured

Additional insured status extends the contractor's liability coverage to you for claims arising from their work. It comes from an endorsement to their policy. Commonly used ISO endorsements cover ongoing operations and completed operations; your contract should say which you need.

Waiver of subrogation

A waiver of subrogation stops the contractor's insurer from pursuing you to recover a claim it paid. It also requires an endorsement. Workers compensation waivers are a common requirement.

Primary and non-contributory

This wording means the contractor's policy responds first, without asking your policy to share the loss. Again, check the endorsement.

Common gaps

  • Expired policies
  • Limits below the contract
  • Boxes checked with no endorsement
  • The wrong entity named
  • Subcontractors on site with no certificate of their own

Keep certificates current automatically. See certificate and compliance tracking.

Ask S&K

S&K is fully insured and provides certificates of insurance on request. Tell us your requirements and we will send what your contract calls for. See safety and compliance.

Score every bidder with the vendor qualification scorecard, or read the full Vendor Selection, Compliance, and Procurement guide. To qualify S&K, ask for our certificates of insurance and safety documentation, or request a quote.

Frequently asked questions

What is a certificate of insurance?

A summary of a contractor's insurance policies, usually on an ACORD 25 form. It is evidence of coverage, not the coverage itself.

What does additional insured mean?

It extends the contractor's liability coverage to you for claims arising from their work, through an endorsement to their policy.

What is a waiver of subrogation?

An endorsement that stops the contractor's insurer from pursuing you to recover a claim it paid.

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