Workers Compensation Calculator
Estimated Annual Premium
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Monthly Premium
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Rate Per Employee (at $50K salary)
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Effective Rate
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How Workers Compensation Premiums Work
Workers compensation insurance is required in nearly all states for businesses with employees. Premiums are calculated using: Premium = (Payroll / 100) x Classification Rate x Experience Modifier x (1 - Discounts). The classification rate varies by industry and job type, reflecting the risk level of the work performed.
The Experience Modifier (E-Mod or EMR) compares your company's claims history to your industry average. A modifier of 1.0 is average. Below 1.0 means fewer claims than average, reducing your premium. Above 1.0 means more claims, increasing costs. A good safety program can significantly reduce your E-Mod over time.
Classification codes group jobs by risk level. Office workers might have a rate of $0.20 per $100 of payroll, while construction workers might be $15-$30 per $100. Many businesses have employees in multiple classifications. Premium discounts are available for schedule credits, safety programs, and pay-as-you-go plans.
Frequently Asked Questions
Is workers compensation insurance required?
Almost every state requires workers comp for businesses with employees. Texas and a few states make it optional for most employers. Independent contractors are generally not covered but misclassification can create liability.
What does workers compensation cover?
It covers medical expenses, lost wages (typically 60-70% of average weekly wage), rehabilitation costs, and death benefits for employees injured or made ill on the job. It does not cover intentional self-injury or injuries while intoxicated.
How can I reduce my workers comp premiums?
Implement a strong safety program, maintain a clean claims history, properly classify employees, shop around for insurers, consider a higher deductible, and work with a risk management consultant to improve your Experience Modifier.
What is the Experience Modification Rate?
The EMR compares your claims history to similar businesses. It is calculated using three years of claims data (excluding the most recent year). Lower EMRs mean lower premiums. New businesses typically start at 1.0.
How are workers comp classification codes determined?
Classification codes are assigned by the National Council on Compensation Insurance (NCCI) or state rating bureaus based on the type of work employees perform, not the industry name. Each code has a base rate reflecting the historical risk of that job type. Office clerical workers (code 8810) have rates of $0.15-$0.30 per $100 payroll, while roofers (code 5551) may pay $15-$30 per $100. Employees performing different types of work should be classified under separate codes.
What happens if an employee is injured and I do not have workers comp?
Operating without required workers compensation insurance is a criminal offense in most states, punishable by fines of $1,000 to $100,000 or more and potential imprisonment. The employer becomes personally liable for all medical expenses and lost wages without the protection of insurance limits. Injured employees may also sue for damages in civil court, unlike with workers comp where lawsuits are generally barred in exchange for guaranteed benefits.