If you’ve ever signed a contract, hired a subcontractor, leased commercial space, or worked with a new vendor, you’ve likely encountered a request for a Certificate of Insurance (COI).
Many business owners receive COIs or provide them regularly without fully understanding their purpose. However, these documents play an important role in risk management and can help businesses verify that the appropriate insurance coverage is in place before work begins.
For businesses throughout Arizona, Washington, and Oregon, understanding Certificates of Insurance can help reduce risk and prevent costly misunderstandings.
What Is a Certificate of Insurance?
A Certificate of Insurance, commonly referred to as a COI, is a document that summarizes certain details about an insurance policy.
A COI typically includes:
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Policyholder name
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Insurance carrier
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Policy numbers
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Coverage types
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Coverage limits
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Policy effective dates
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Certificate holder information
The certificate provides evidence that insurance coverage exists at the time the document is issued.
Why Businesses Request Certificates of Insurance
Businesses often request COIs before entering into a contract or business relationship.
The goal is to verify that another party maintains insurance coverage that aligns with contractual requirements.
Common examples include:
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General contractors requesting certificates from subcontractors
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Property managers requesting certificates from vendors
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Clients requesting proof of insurance from consultants
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Event organizers requesting certificates from exhibitors
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Landlords requesting certificates from tenants
A COI can help confirm that basic coverage requirements have been met before work begins.
Common Coverages Listed on a COI
Several types of insurance may appear on a certificate.
General Liability Insurance
General liability coverage may help protect against claims involving:
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Bodily injury
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Property damage
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Legal defense expenses
This is one of the most frequently requested coverages.
Workers’ Compensation Insurance
Workers’ compensation helps provide benefits when employees suffer work-related injuries or illnesses.
Businesses often request proof of workers’ compensation coverage before allowing contractors onto a job site.
Commercial Auto Insurance
Companies that operate vehicles for business purposes may be asked to provide evidence of commercial auto coverage.
Umbrella or Excess Liability Coverage
Some contracts require higher liability limits than a standard policy provides.
Umbrella coverage may help extend liability protection beyond underlying policy limits.
What a COI Does Not Do
One of the biggest misconceptions about Certificates of Insurance is that they automatically provide coverage.
A COI is generally:
✅ Evidence that coverage exists
❌ Not the insurance policy itself
❌ Not a contract
❌ Not a guarantee of claim payment
The actual insurance policy determines what is covered, excluded, and subject to conditions.
This is why businesses should carefully review contract requirements and policy language rather than relying solely on the certificate.
Why Additional Insured Status Matters
Many contracts require one party to be added as an Additional Insured.
Being listed as a certificate holder and being an Additional Insured are not necessarily the same thing.
A certificate holder simply receives the certificate.
An Additional Insured may receive certain rights under another party’s policy, subject to policy terms and endorsements.
Businesses should review contractual requirements carefully to understand what is actually being requested.
Reviewing COIs from Vendors and Contractors
When receiving a COI, businesses should verify several details.
Consider reviewing:
✅ Policy effective dates
✅ Coverage limits
✅ Insurance carrier information
✅ Required coverage types
✅ Additional insured requirements
✅ Contract-specific insurance obligations
Simply receiving a certificate is not enough if the required coverage is missing.
Common Mistakes Businesses Make
Accepting Expired Certificates
Insurance policies renew periodically.
An outdated certificate may no longer reflect active coverage.
Overlooking Coverage Limits
A contractor may have insurance, but the limits may not meet contract requirements.
Not Verifying Additional Insured Status
A certificate may reference additional insured status without confirming the required endorsement exists.
Failing to Track Renewals
Long-term projects often require updated certificates to ensure coverage remains active throughout the project.
Industries That Frequently Use COIs
Certificates of Insurance are common in many industries, including:
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Construction
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Property management
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Real estate
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Professional services
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Manufacturing
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Hospitality
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Transportation
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Event management
Businesses that regularly work with vendors, contractors, or clients often encounter COI requirements on a routine basis.
Develop a Certificate Management Process
As businesses grow, managing certificates manually can become challenging.
Consider creating a process for:
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Collecting certificates
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Reviewing coverage requirements
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Tracking expiration dates
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Maintaining records
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Requesting updated certificates
Consistent procedures can help reduce administrative issues and improve compliance with contractual obligations.
Questions Business Owners Should Ask
Before accepting or issuing a COI, consider asking:
✅ Does the certificate meet contract requirements?
✅ Are coverage limits sufficient?
✅ Is the policy active?
✅ Is additional insured status required?
✅ Are expiration dates being monitored?
✅ Have all required coverages been verified?
A thorough review can help reduce exposure to unexpected liability.
Final Thoughts
Certificates of Insurance are an important part of business risk management. They help provide evidence of insurance coverage and assist businesses in verifying that vendors, contractors, and business partners meet contractual insurance requirements.
For businesses in Arizona, Washington, and Oregon, understanding how COIs work can improve compliance, reduce risk, and support stronger business relationships.
A Certificate of Insurance may seem like a simple document, but reviewing it carefully can help prevent significant problems later.
