A Workers’ Compensation Certificate of Insurance is an important document for many U.S. businesses, contractors, vendors, and employers. It may be requested when a company hires a contractor, a general contractor brings on a subcontractor, or a business needs to demonstrate that it maintains workers’ compensation coverage.

If you have been asked to provide a workers’ comp certificate of insurance, you may be wondering what the document means, what information it contains, and how to obtain one.

The process is generally straightforward, but workers’ compensation has important state-specific requirements. A certificate should accurately reflect the employer’s actual insurance coverage and should not be used as a substitute for understanding the underlying policy.

This guide explains what a workers’ comp COI is, when businesses may need one, and how to request and review it.

What Is a Workers’ Comp Certificate of Insurance?

A workers’ compensation certificate of insurance is documentation that provides information about an employer’s workers’ compensation insurance policy.

Workers’ compensation insurance generally provides benefits to employees who experience qualifying work-related injuries or illnesses, subject to applicable state law and policy.

A company hiring another business may request a workers’ compensation COI to verify that the other business maintains the coverage required by the contract or applicable requirements.

For example, a general contractor may hire a roofing subcontractor. Before allowing the subcontractor’s employees onto the job site, the general contractor may ask for proof of workers’ compensation insurance.

The subcontractor can request a certificate from its insurance agent or insurance company and provide it to the general contractor.

What Does a Workers’ Comp COI Show?

A workers’ compensation certificate may contain information such as:

• Name of the insured business
• Insurance carrier
• Policy number
• Effective date
• Expiration date
• Workers’ compensation coverage
• Employer’s liability limits
• Certificate holder
• Description of operations

The exact information and format can vary depending on the certificate and applicable circumstances.

Example

A simplified example might look like this:

Information	Example
Insured	ABC Construction LLC
Insurance Carrier	Example Insurance Company
Policy Type	Workers’ Compensation
Policy Number	WC-123456
Effective Date	01/01/2026
Expiration Date	01/01/2027
Employer’s Liability – Each Accident	$1,000,000
Employer’s Liability – Disease	$1,000,000
Employer’s Liability – Disease, Each Employee	$1,000,000
Certificate Holder	XYZ General Contractor

These figures are examples only and should not be interpreted as standard requirements for every U.S. business.

Is a Workers’ Comp Certificate the Same as Workers’ Compensation Insurance?

No.

This distinction is important.

The insurance policy is the actual contract between the insurer and insured. It contains the terms, conditions, exclusions, definitions, and other provisions that govern coverage.

The certificate provides a summary of certain insurance information.

Workers’ Comp Policy	Workers’ Comp Certificate
Actual insurance contract	Summary/evidence of insurance
Contains detailed provisions	Provides selected policy information
Establishes applicable coverage according to its terms	Helps demonstrate that coverage exists
Contains exclusions and conditions	Does not replace the policy

A company should not rely on a certificate alone to determine all of its legal or insurance obligations.

Why Do Companies Request a Workers’ Comp COI?

Businesses may request a workers’ compensation certificate as part of their vendor or contractor onboarding process.

For example, a company may want to verify that an independent contractor or subcontractor has appropriate workers’ compensation coverage for its employees.

Common situations include:

• Construction projects
• Commercial property maintenance
• Facility management
• Landscaping
• Cleaning services
• Manufacturing
• Transportation
• Security services
• Event operations
• Government contracting
• Vendor agreements

The exact requirements depend on the relationship and applicable state laws.

Workers’ Compensation Requirements Vary by State

One of the most important things to understand about workers’ compensation in the United States is that there is no single nationwide rule that applies identically to every employer.

Factors that may affect an employer’s obligations include:

• State where employees work
• Number of employees
• Type of business
• Industry
• Employee classification
• Business structure
• Whether employees work across state lines

For example, the rules applicable to a small business in California may differ from those applicable to a company in Texas or New York.

Employers should check the requirements applicable to the states where their employees perform work.

What Are Employer’s Liability Limits?

A workers’ compensation certificate may also show employer’s liability limits.

These are different from the workers’ compensation benefits themselves.

A simplified example might show:

Employer’s Liability Limit	Example Amount
Each Accident	$1,000,000
Disease – Policy Limit	$1,000,000
Disease – Each Employee	$1,000,000

These are common example figures but are not universal requirements.

The appropriate limits depend on the policy, state, employer, and contractual requirements.

Certificate Holder vs. Additional Insured

Another area that can create confusion is the certificate holder.

Suppose a general contractor hires a subcontractor.

The general contractor may request that its company be listed as the certificate holder on the subcontractor’s COI.

The certificate holder receives the certificate as evidence of the subcontractor’s insurance information.

However, certificate holder status does not automatically provide insurance coverage.

Workers’ compensation policies also have specific rules governing who is covered as an insured.

If a contract contains special insurance requirements, provide the language to your insurance agent or broker rather than assuming that changing the certificate wording will create coverage.

How to Get a Workers’ Comp Certificate of Insurance

If your business already carries workers’ compensation insurance, obtaining a certificate is generally simple.

Step 1: Identify the Requesting Organization

Determine who is asking for the certificate.

It could be:

• General contractor
• Client
• Property manager
• Vendor management department
• Government agency
• Business partner

Step 2: Ask for the Exact Requirements

Find out whether the organization needs only workers’ compensation information or additional coverage.

For example, a contractor may be required to provide:

• Workers’ compensation
• General liability
• Commercial auto
• Employer’s liability

Ask for the requirements in writing whenever possible.

Step 3: Contact Your Insurance Agent or Broker

Contact the agent, broker, or insurance company that handles your workers’ compensation policy.

Tell them you need a certificate and provide the requesting party’s information.

Step 4: Provide Certificate Holder Information

Give your insurance provider the exact legal name and address of the certificate holder.

Step 5: Review the Certificate

Before sending it, verify:

• Business name
• Insurance carrier
• Policy number
• Policy dates
• Workers’ compensation information
• Employer’s liability limits
• Certificate holder

If something is incorrect, ask the insurance provider to correct it.

Can You Create Your Own Workers’ Comp Certificate?

You should not create your own document and present it as an official insurance certificate.

A legitimate certificate should accurately reflect an insurance policy and is generally issued by an authorized insurance company, agent, broker, or other appropriate insurance professional.

Do not manually change:

• Policy numbers
• Coverage limits
• Effective dates
• Expiration dates
• Insurance carrier
• Certificate wording

If your customer requires different coverage, contact your insurance professional.

What If You Are a Sole Proprietor?

Sole proprietors can face different workers’ compensation rules than businesses with employees.

In some states and circumstances, owners may be excluded from workers’ compensation coverage or may have options concerning coverage.

However, the rules vary.

A customer may also have its own contractual requirements for contractors, regardless of whether the contractor is legally required to carry workers’ compensation.

For this reason, a sole proprietor should not automatically assume that having no employees means there are no workers’ compensation requirements.

Check the applicable state rules and the contract requirements.

What If a Contractor Says It Has No Employees?

A contractor without employees may not have the same workers’ compensation obligations as an employer with a workforce.

However, businesses sometimes require documentation showing the contractor’s workers’ compensation status.

Depending on the state and situation, a business may request a certificate, exemption documentation, or other evidence.

The correct documentation depends on the applicable state rules and the customer’s requirements.

Do not create a false certificate simply because a client wants paperwork.

Common Workers’ Comp COI Mistakes

1. Using an Expired Certificate

Always check the expiration date.

A certificate from a previous policy period may not demonstrate current coverage.

2. Providing the Wrong Business Name

Make sure the legal entity listed on the certificate corresponds to the business actually performing the work.

3. Ignoring State Requirements

Workers’ compensation requirements can differ significantly between states.

4. Changing the Certificate Yourself

Never modify insurance information to satisfy a customer.

Ask your insurance provider for an updated or corrected certificate.

5. Confusing Workers’ Compensation With Employer’s Liability

These are related but distinct components of workers’ compensation policies.

Understand what the customer is actually requesting.

6. Waiting Until Work Begins

A company may refuse to allow a contractor’s employees onto its property until the required documentation has been approved.

Request the certificate before the project begins.

Workers’ Comp COI Checklist

Use this checklist before submitting your certificate:

Requirement	Check
Correct legal business name	✓
Insurance carrier	✓
Policy number	✓
Effective date	✓
Expiration date	✓
Workers’ compensation coverage	✓
Employer’s liability limits	✓
Certificate holder	✓
Contract requirements reviewed	✓
Additional requirements reviewed	✓

Keeping copies of your current certificates can make future contractor and vendor onboarding easier.

How Often Should You Get an Updated Certificate?

You may need a new workers’ comp certificate when:

• Your policy renews
• A new client requests proof of insurance
• A new project begins
• Your certificate holder changes
• Your insurance carrier changes
• Policy information changes
• A customer requests current documentation

For businesses working with multiple contractors or clients, maintaining a calendar of policy expiration dates can help prevent expired certificates from being submitted.

What If Your Certificate Is Rejected?

If a client or general contractor rejects your workers’ compensation COI, ask exactly why.

Possible reasons include:

• Incorrect certificate holder
• Expired policy
• Incorrect business name
• Missing information
• Insufficient limits
• Missing required coverage
• Contract-specific documentation requirements

Send the rejection or requirements to your insurance agent or broker.

Your insurance professional can determine whether the certificate needs correction or your policy needs to be changed.

Final Thoughts

A Workers’ Comp Certificate of Insurance is commonly used by U.S. businesses to provide evidence of workers’ compensation insurance when working with contractors, subcontractors, vendors, and other companies.

The basic process is simple: determine what the customer requires, contact your insurance provider, provide the correct certificate holder information, and carefully review the certificate before submitting it.

However, workers’ compensation is particularly important to handle correctly because requirements vary by state. A company’s obligations can depend on where employees work, the number of employees, the industry, and other factors.

Remember that a COI is generally a summary or evidence of insurance coverage, not the insurance policy itself. The underlying policy and applicable state laws determine the actual coverage and obligations.

If your business operates in multiple states, uses subcontractors, or is unsure whether it must carry workers’ compensation insurance, consult the appropriate state workers’ compensation authority and a licensed insurance professional.

Keeping your workers’ compensation policy current and your certificates organized can help prevent delays during vendor onboarding, construction projects, and commercial contracts while demonstrating that your business is prepared to meet applicable insurance requirements.