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Certificates of Insurance, Additional Insureds, and Contract Requirements Explained
A contractor signs a new project agreement, sends a certificate of insurance, and expects approval. The property owner or general contractor then replies: “The certificate does not show additional insured status, primary and noncontributory wording, completed operations coverage, or 30 days’ cancellation notice.”
The contractor asks the insurance agency to add the requested wording. The agency explains that a certificate of insurance cannot create coverage. Work is delayed while the parties determine which endorsements are required, whether the carrier will issue them, and whether the policy applies in every state involved.
This problem affects contractors, subcontractors, vendors, landlords, property managers, and businesses signing service agreements. It is especially common when a Connecticut company works in New York, Massachusetts, Rhode Island, or another state.
The central rule is simple:
A certificate of insurance summarizes coverage. The policy and its endorsements create coverage.
For broader context, start with the Multi-State Commercial Insurance Strategy pillar. Then use this guide to review contract insurance requirements before signing or beginning work.
What is a certificate of insurance?
A certificate of insurance (COI) is a summary of an insurance policy. It commonly shows:
The named insured
The insurance carrier
Policy numbers
Effective and expiration dates
Coverage types
Liability limits
The certificate holder
Basic information about endorsements or operations
Businesses often use an ACORD 25 certificate to demonstrate that a contractor or vendor carries required insurance. A landlord may request a COI from a tenant. A general contractor may require one from every subcontractor. A property manager may collect certificates from maintenance vendors.
A COI is useful, but it is not the insurance contract. The standard certificate language states that it is issued for informational purposes and does not amend, extend, or alter coverage.
The Texas Department of Insurance certificate FAQ provides a clear example of this principle. Its guidance explains that a certificate cannot add an insured, create a waiver of subrogation, or provide rights beyond the policy and endorsements.
Certificate holder versus additional insured
These terms describe different relationships.
Term | What it means | Coverage rights? |
Certificate holder | Receives proof that a policy exists | No, not solely because of the certificate |
Named insured | Owns or is primarily covered by the policy | Yes, subject to policy terms |
Additional insured | Added to the policy through an endorsement | Yes, but only within the endorsement’s scope |
Listing a company in the certificate holder box does not make that company an additional insured. Checking the “ADDL INSD” box on a COI also does not create coverage if the policy lacks the required endorsement.
An additional insured is normally added because the named insured has agreed to protect another party from certain liability arising out of the named insured’s work. The coverage is limited. It may apply only to ongoing operations, only to vicarious liability, only to a specific location, or only to the amount required by the contract.
For commercial liability background, review Insure Connecticut’s general liability insurance information. The policy language and actual endorsement control the result.
What is an additional insured endorsement?
An endorsement is a written change to an insurance policy. It can add a person or organization, modify a coverage condition, exclude a risk, or change how coverage applies.
Additional insured status may be provided through:
A scheduled endorsement naming a specific organization
A blanket additional insured endorsement
A project-specific endorsement
A policy provision that automatically grants status when a written contract requires it
Common ISO examples include:
CG 20 10: Often associated with additional insured coverage for ongoing operations
CG 20 37: Often used for additional insured coverage involving completed operations
These forms are examples only. Carriers use different forms, editions, and proprietary wording. You must review the actual endorsement rather than relying on the form number alone.
Ongoing operations and completed operations
Ongoing operations involve work that is still being performed. For example, a roofing contractor is actively replacing a roof.
Completed operations involve work finished by the contractor. For example, a plumbing connection fails six months after a project ends and causes water damage.
A contract may require additional insured status for both periods. An endorsement limited to ongoing operations may not satisfy a completed-operations requirement.
The IRMI explanation of additional insured status and waivers of subrogation explains why this distinction matters. It also notes that an entity added as an additional insured on a primary policy is not automatically included on every excess or umbrella layer.
Primary and noncontributory wording
A contract may require the contractor’s insurance to be primary and noncontributory.
These terms address how two insurance policies respond to the same claim:
Primary means the contractor’s policy responds first, subject to its terms and limits.
Noncontributory means the contractor’s insurer does not seek contribution from the additional insured’s insurance when the required conditions are met.
Primary and noncontributory status is not the same as additional insured status. A party may be an additional insured without receiving primary and noncontributory treatment.
The contract should identify:
Which policy must be primary
Which party receives the protection
Whether the requirement applies to general liability, auto liability, umbrella, or other coverage
Whether a separate endorsement is required
A COI can report that the policy includes primary and noncontributory wording. It cannot create that status by typing the phrase into the description of operations.
Waiver of subrogation
Subrogation is an insurer’s right to pursue a responsible third party after paying a covered claim.
For example, a property insurer pays an owner for fire damage caused by a contractor’s work. The property insurer may try to recover that payment from the contractor. A waiver of subrogation limits the insurer’s recovery rights against the protected party when the policy and contract support the waiver.
A waiver of subrogation does not replace additional insured coverage.
Additional insured status may provide a defense for certain third-party liability claims.
A waiver of subrogation addresses recovery efforts by an insurer after paying a loss.
Primary and noncontributory wording addresses how insurance responds when multiple policies may apply.
These are separate risk-transfer provisions. A contract may require all three.
The waiver must appear in the policy or an applicable endorsement. A checkbox on the COI is evidence only. The IRMI resource explains why the contract waiver and insurance-policy waiver should be coordinated.
Cancellation and notice provisions
Many certificate holders request language such as:
“Thirty days’ notice of cancellation will be provided.”
That wording creates problems when the policy does not provide the requested notice.
A certificate cannot promise more than the policy or applicable law requires. Standard certificate language often says the insurer will “endeavor” to provide notice, while also stating that failure to do so creates no obligation for the insurer.
If a contract requires cancellation, nonrenewal, or material-change notice, ask these questions:
Is the certificate holder named in the policy or an endorsement?
Does the policy actually require notice?
Does the carrier agree to issue the requested notice endorsement?
Does the notice apply to cancellation for nonpayment?
Does state law modify the requirement?
Does the wording apply to all policies or only one coverage line?
The answer can vary by state. A Connecticut company working in New York, Massachusetts, or Rhode Island should have its broker review the applicable policy forms and local requirements.
Limits, endorsements, and multi-state contract
A COI may show a $1 million general liability limit and a $2 million aggregate. That information does not answer every contract question.
You also need to confirm:
Whether the aggregate applies per project or per policy
Whether products and completed operations are included
Whether the required location is covered
Whether exclusions affect the contracted work
Whether commercial auto coverage applies to the vehicles and operations involved
Whether an umbrella or excess policy follows the required underlying coverage
Whether the additional insured is included on the umbrella layer
Whether employees and operations in each state are properly addressed
For a business operating in Connecticut, New York, Massachusetts, and Rhode Island, the review should include more than the COI. The broker should examine policy territories, state-specific endorsements, workers’ compensation structure, commercial auto garaging, and any subcontractor requirements.
Read the related commercial auto insurance guidance, commercial insurance information, and the multi-state workers’ compensation strategy article.
COI review checklist
Before accepting or submitting a certificate, compare it with the contract.
Coverage verification
Confirm the named insured’s legal name.
Confirm the policy dates cover the work period.
Confirm the required coverage types appear.
Compare every limit with the contract.
Check whether an umbrella or excess policy is required.
Endorsement verification
Request the actual additional insured endorsement.
Confirm whether it covers ongoing operations.
Confirm whether completed operations coverage is required.
Request primary and noncontributory documentation.
Request waiver of subrogation documentation.
Confirm effective dates and named parties.
Operational verification
Confirm the correct job, property, or location.
Confirm the policy covers the work being performed.
Confirm commercial auto coverage for vehicles used on the contract.
Confirm multi-state operations are properly addressed.
Check for exclusions that affect the contractor’s services.
A COI that does not match the contract should not be “fixed” by adding unsupported wording. Ask the broker or carrier to determine whether the policy can be endorsed.
Common mistakes to avoid
Mistake 1: Treating the certificate holder as an insured
The certificate holder receives information. It does not automatically receive liability protection.
Mistake 2: Accepting a checked box without the endorsement
The endorsement creates the status. Obtain and review it.
Mistake 3: Assuming all additional insured coverage is broad
Additional insured endorsements contain conditions, limitations, and exclusions.
Mistake 4: Ignoring completed operations
A project can generate a claim after completion. Confirm whether the contract requires continuing protection.
Mistake 5: Assuming the umbrella follows automatically
An additional insured on the general liability policy may not be an additional insured on the umbrella or excess policy.
Mistake 6: Using a COI to interpret the contract
A broker can explain insurance coverage. An attorney should interpret indemnification, insurance, and risk-transfer language in the contract.
When to request a contract insurance review
Request a review before signing when:
The agreement requires unusual limits
The other party demands specific endorsements
You operate across state lines
The contract involves construction, property management, transportation, or professional services
You must provide completed operations coverage
The contract requires $5 million or more in umbrella or excess limits
The agreement includes indemnification or hold-harmless language
Your current policy was not designed for the new work
Insure Connecticut helps contractors, vendors, landlords, property managers, and businesses coordinate commercial insurance requirements across Connecticut and multiple states. For complex multi-state contracts, layered liability programs, specialty risks, or difficult placements, Icon Insurance Solutions may be an appropriate referral resource.
Before you sign the contract or begin work, send the agreement and insurance requirements to a licensed insurance professional. Ask for a written coverage review, the required endorsements, and confirmation that the policy applies to the actual operations and states involved.
This article provides general insurance education, not legal advice. Have qualified legal counsel interpret contract language, indemnification provisions, and state-specific requirements.
Frequently asked questions
Does a certificate of insurance create coverage?
No. A COI summarizes policy information. The policy, endorsements, and applicable law determine coverage.
Does being a certificate holder make me an additional insured?
No. Certificate holder status does not create additional insured rights. The policy must include an applicable additional insured endorsement.
Can a COI add primary and noncontributory wording?
No. The certificate can report policy wording, but it cannot create primary and noncontributory status.
Do I need both additional insured status and a waiver of subrogation?
Often, contracts require both because they address different risks. Additional insured status and waiver of subrogation are not interchangeable.
Should I have an attorney review the contract?
Yes. Insurance professionals can evaluate policies and endorsements. Attorneys should interpret contractual duties, indemnity provisions, and legal enforceability.
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