Workers’ compensation insurance rating can seem complex, but breaking it down into key factors can help business owners better understand how their rates are determined. Several elements influence the cost of workers’ comp coverage, including class codes, payroll, and experience modification numbers.
Key Factors That Determine Workers’ Comp Rates
Workers’ Comp Class Codes
Class codes are assigned by the National Council on Compensation Insurance (NCCI) or state bureaus. Each type of job receives a unique code based on the level of risk associated with the work. Higher-risk jobs generally have higher workers’ comp rates.
Payroll Size
The rate associated with a particular class code is multiplied by every $100 of payroll reported. This means that businesses with larger payrolls may have higher premiums, depending on their risk classification.
Experience Modification Number (Ex-Mod)
The experience modification number reflects a business’s safety record, payroll size, industry type, and loss history. A company with fewer claims will have a lower Ex-Mod, which helps reduce premium costs, while a poor safety record can increase rates.
State-Specific Differences in Workers’ Comp Rating
Workers’ comp rating factors vary by state based on individual laws. For example, some states have medical fee schedules that regulate costs for workers’ comp treatments. States with higher medical costs may have higher workers’ comp rates.
Additionally, in states such as North Dakota, Washington, Ohio, and Wyoming, businesses must obtain coverage through a state fund, meaning they pay the rates set by the state.
How Business Type Affects Rates
Higher-risk industries typically have higher workers’ comp rates. For instance:
- A drywall contractor may have a rate of $8.50 per $100 of payroll due to the physical nature of the job.
- An accounting firm may have a significantly lower rate of $0.43 per $100 of payroll since office work carries minimal injury risks.
The Role of Insurance Brokers
How a business acquires workers’ comp insurance also impacts rates. A skilled insurance broker negotiates with multiple markets to secure the best pricing and terms. Providing comprehensive details about safety measures, risk management, and claims history can also help reduce costs.
Final Thoughts
Understanding the factors that impact workers’ comp insurance rates can help businesses manage costs effectively. Taking proactive steps to improve workplace safety and working with an experienced broker can make a significant difference in premium pricing.
For further questions on this or any other risk management topic, please contact us. We’ll see you again soon!


