For many business owners, receiving notice of a workers’ compensation audit can feel intimidating. Questions immediately come to mind:

• What is a workers’ compensation audit?
• Why is the insurance company reviewing my records?
• What documents will I need?
• Could I owe additional premium?
• How can I avoid costly mistakes?

The good news is that a workers’ compensation audit is a normal part of most workers’ compensation insurance policies. When handled properly, the process is straightforward and can help ensure your business is paying the correct premium based on actual payroll and job classifications.

At Comp Matters, we help New York and Long Island businesses understand workers’ compensation insurance, prepare for audits, and avoid unnecessary premium increases. With decades of industry experience, we guide business owners through every step of the audit process.

What Is a Workers’ Compensation Audit?

A workers’ compensation audit is a review conducted by your insurance company after your policy period ends. The purpose is to compare the estimated payroll and business operations used to calculate your original premium with your actual payroll and job duties during the policy term.

When your policy begins, your insurance premium is based on estimates:

• Estimated payroll
• Expected number of employees
• Employee job classifications
• Subcontractor usage
• Business operations

Because these numbers are projections, the insurance carrier performs an audit at the end of the policy period to determine what actually occurred.

If your actual payroll is higher than estimated, you may owe additional premium. If your payroll is lower, you may receive a refund.

Why Insurance Companies Conduct Workers’ Compensation Audits

Workers’ compensation insurance premiums are heavily influenced by payroll and classification codes. Since payroll can fluctuate throughout the year, insurance companies use audits to ensure premiums are accurate.

Audits help carriers verify:

• Total payroll paid to employees
• Job duties performed
• Proper classification codes
• Overtime calculations
• Executive payroll limitations
• Subcontractor certificates of insurance
• State-specific rating rules

Without an audit, premiums would be based only on estimates, which could significantly overcharge or undercharge a business.

When Does a Workers’ Compensation Audit Take Place?

Most workers’ compensation audits occur shortly after the policy expires.

For example:

• Policy effective date: January 1, 2025
• Policy expiration date: January 1, 2026
• Audit conducted: January–March 2026

The insurance company may contact you by:

• Email
• Telephone
• Postal mail
• Online audit portal
• In-person visit

Responding promptly is important. Delays can lead to estimated audits, which often result in higher premiums.

Types of Workers’ Compensation Audits

Mail Audit

You complete forms and submit payroll records electronically or by mail.

Telephone Audit

An auditor reviews your information over the phone.

Virtual Audit

Documents are uploaded to a secure online portal.

Physical Audit

An auditor visits your office to inspect records and discuss business operations.

Estimated Audit

If you do not cooperate, the carrier may estimate payroll—often significantly higher than actual payroll.

Documents Typically Required for a Workers’ Compensation Audit

Being organized can make the audit much easier. Common documents include:

• Payroll summaries
• Quarterly federal tax returns (Form 941)
• State unemployment tax returns
• General ledger
• Check registers
• W-2s and W-3s
• 1099 contractor reports
• Certificates of insurance from subcontractors
• Cash disbursement journals
• Corporate tax returns
• Profit and loss statements

Depending on your business, additional records may be requested.

Step 1: The Auditor Reviews Your Business Operations

The auditor will ask detailed questions about what your company actually does.

Examples include:

• What products or services do you provide?
• Have your operations changed?
• Do employees perform multiple duties?
• Do you use subcontractors?
• Have you added new divisions or locations?

This step is critical because classification codes are based on actual operations, not just your company name.

Step 2: Payroll Verification

The auditor compares estimated payroll to actual payroll records.

Payroll generally includes:

• Wages and salaries
• Bonuses
• Commissions
• Vacation pay
• Sick pay
• Certain allowances

Some amounts may be excluded depending on state rules.

Step 3: Classification Code Review

Each employee is assigned a workers’ compensation classification code based on job duties.

Examples include:

• Office employees
• Clerical staff
• Roofing contractors
• Restaurants
• Retail stores
• Manufacturers

Incorrect classifications are one of the most common causes of overcharges.

For example, a clerical employee incorrectly assigned to a roofing classification can dramatically increase premium costs.

Step 4: Subcontractor Review

If you hire subcontractors, auditors will request certificates of insurance.

Without valid certificates proving your subcontractors carried their own workers’ compensation insurance, the carrier may include their payments in your payroll, increasing your premium substantially.

This is especially common in:

• Construction
• Roofing
• Landscaping
• Trucking
• Cleaning services

Step 5: Overtime Adjustments

In many states, only the straight-time portion of overtime is included in payroll calculations.

For example:

• Employee earns $30/hour
• Overtime paid at $45/hour
• The extra $15 premium portion may be excluded

Proper overtime segregation can reduce premium.

Step 6: Executive Payroll Limitations

Corporate officers and owners are often subject to minimum and maximum payroll limitations established by state rating rules.

This prevents unusually high or low salaries from distorting premiums.

Step 7: Experience Modification Factor (EMR) Impact

While the audit itself does not determine your EMR, audited payroll directly affects your experience rating calculations.

Accurate audits help ensure:

• Proper expected losses
• Correct EMR calculations
• Fair premium costs

Errors in audited payroll can influence premiums for several years.

Common Workers’ Compensation Audit Mistakes

Many businesses unintentionally overpay due to avoidable errors.

Common mistakes include:

• Missing subcontractor certificates
• Incorrect classifications
• Failure to separate clerical payroll
• Incomplete overtime records
• Misreported executive payroll
• Ignoring audit notices
• Accepting audit results without review

What Happens After the Audit?

Once the review is complete, the insurance company issues a final audit statement.

Possible outcomes include:

Additional Premium Due

If actual payroll exceeded estimates, you may owe more premium.

Premium Refund

If payroll was lower than expected, you may receive a refund or credit.

Classification Adjustments

The carrier may reassign employees to different classifications.

Can You Dispute a Workers’ Compensation Audit?

Yes. If you believe the audit contains errors, you have the right to challenge the findings.

Potential issues include:

• Incorrect payroll amounts
• Missing certificates of insurance
• Improper classification assignments
• Failure to exclude overtime
• Misunderstanding of business operations

Disputes should be addressed promptly, as deadlines may apply.

How to Prepare for a Workers’ Compensation Audit

The best preparation is maintaining organized records throughout the year.

Keep Accurate Payroll Records

Save All Certificates of Insurance

Track Overtime Separately

Review Employee Job Duties

Monitor Classification Codes

Work With Experienced Insurance Professionals

How Comp Matters Helps Businesses Navigate Workers’ Compensation Audits

At Comp Matters, we specialize in:

• Workers’ compensation insurance guidance
• Audit preparation and review
• Classification analysis
• Experience modification review
• Premium reduction strategies
• Policy restructuring

We help businesses throughout Long Island and New York understand their policies, prepare for audits, and identify opportunities to reduce unnecessary costs.

Industries That Benefit Most From Audit Guidance

We frequently assist businesses in:

• Roofing
• Construction
• Landscaping
• Manufacturing
• Trucking
• Restaurants
• Retail
• Healthcare
• Property management
• Cleaning services

These industries often have complex classifications and significant audit exposure.

Why Experience Matters

Workers’ compensation audits involve technical rules that many business owners have never encountered.

An experienced advisor can help you:

• Understand what the auditor is requesting
• Organize supporting documentation
• Verify classifications
• Challenge errors
• Reduce unnecessary premium charges

Even small mistakes can lead to thousands of dollars in additional costs.

Final Thoughts: Workers’ Compensation Audits Don’t Have to Be Stressful

A workers’ compensation audit is simply a reconciliation process to ensure your premium reflects your actual payroll and operations.

When your records are organized and your classifications are accurate, audits become manageable and can even uncover opportunities for refunds or savings.

The key is understanding the process, responding promptly, and reviewing the results carefully.

Need Help With a Workers’ Compensation Audit?

If your business has received an audit notice, is facing additional premium charges, or wants a second opinion on workers’ compensation insurance, Comp Matters is here to help.

We provide expert guidance for businesses throughout Long Island and New York, helping employers navigate audits, reduce costs, and ensure their workers’ compensation coverage is structured correctly.

Contact Comp Matters today to discuss your workers’ compensation audit and insurance needs.