A workers' compensation class code is a four-digit number assigned by the National Council on Compensation Insurance (NCCI) that categorizes the type of work your employees perform. Every employee on your payroll is assigned to one or more class codes, and each code carries a specific base rate — expressed as a dollar amount per $100 of payroll.

For example, a Florida roofing contractor might be classified under code 5551 (Roofing), which carries one of the highest rates in the state due to the inherent fall risk of the trade. A clerical office worker, by contrast, falls under code 8810 (Clerical Office Employees), which carries a much lower rate because the work is sedentary and low-risk.

Your total workers' comp premium is calculated by multiplying your payroll (per $100) by the applicable class code rate, then adjusting for your experience modification factor (EMR). Getting your class code right is therefore one of the most direct ways to control your insurance cost.

Florida uses the NCCI classification system, which is the standard in most U.S. states. NCCI maintains a manual of hundreds of class codes, each with a detailed description of the type of work it covers. When you apply for workers' compensation insurance, your insurer will review your business operations and assign class codes based on the actual duties performed by each employee.

The key principle is that class codes are assigned based on the actual work performed, not the job title. A "supervisor" who spends most of their time on a job site doing physical work will be classified under the trade code, not a supervisory code. Conversely, an employee who works exclusively in the office — even at a construction company — may qualify for the clerical code 8810.

Florida also uses a governing classification rule: when an employee performs multiple types of work, they are typically assigned to the highest-rated code that applies to their duties, unless the employer maintains separate payroll records for each type of work. This makes accurate payroll segregation a valuable cost-control strategy.

While there are hundreds of class codes, a relatively small number account for the majority of Florida workers' comp policies. Here are some of the most frequently used codes and their approximate base rates:

Class Code	Description	Approx. FL Rate (per $100 payroll)
5551	Roofing — all types	$18–$22
5403	Carpentry — residential	$9–$12
5183	Plumbing	$5–$7
5190	Electrical wiring — within buildings	$4–$6
0042	Landscaping	$6–$9
9082	Restaurant — all employees	$2–$3
8810	Clerical office employees	$0.20–$0.35
7380	Trucking — long haul	$7–$10
8742	Salespersons — outside	$0.50–$0.80

Rates are updated periodically by NCCI and vary by insurer. Always confirm current rates with a licensed agent before budgeting your insurance costs.

Misclassification — whether intentional or accidental — is one of the most common issues in workers' compensation. Being placed in too high a code means you're overpaying; being placed in too low a code can result in a large audit bill at the end of your policy year.

To verify your classification, start by reviewing your current policy declarations page. Your class codes and their corresponding payroll allocations should be listed there. Compare those codes against the NCCI scopes manual descriptions — your insurer or agent can provide you with the relevant scope language for each code assigned to your business.

If you believe you've been misclassified, you have the right to request a classification review. An independent insurance agent like Bright Coast Insurance can audit your current policy, compare your codes across multiple carriers, and identify any errors or opportunities for reclassification before your next renewal.

Workers' compensation policies in Florida are written on an estimated payroll basis. At the end of the policy year, your insurer will conduct a premium audit — reviewing your actual payroll records, tax filings, and subcontractor certificates to reconcile your final premium against what you paid.

If your actual payroll was higher than estimated, you'll owe additional premium. If it was lower, you'll receive a refund. The audit also verifies that your class codes accurately reflect the work performed. This is why maintaining clean, segregated payroll records is so important — it gives you the documentation to support your classification and avoid being bumped into a higher-rated code during the audit.

Subcontractor management is another critical audit issue. If you hire uninsured subcontractors, their labor may be added to your payroll and rated at your highest class code. Always collect certificates of insurance from every subcontractor before work begins.