Workers Compensation Insurance - What It Covers, What It Costs, and How Rates Work

What Is Workers Compensation Insurance?

Workers compensation is a no-fault insurance system. When an employee gets hurt on the job or develops a work-related illness, workers comp pays their medical bills and replaces a portion of their lost wages. It does not matter who caused the injury - the employee, the employer, a coworker, or nobody. If it happened at work or because of work, workers comp covers it.

The trade-off is simple and it has been the law for over a century: employees get guaranteed benefits without having to prove fault or sue. Employers get protection from lawsuits over workplace injuries. Both sides give up something. Both sides gain something. That exchange is the foundation of every state workers comp system in the country.

What Workers Comp Covers

A standard workers compensation policy has two parts. Part One covers your employees. Part Two covers you.

Part One - Workers Compensation Benefits (for employees)

• Medical expenses: All reasonable and necessary medical treatment related to the work injury. Doctor visits, surgery, hospital stays, prescriptions, physical therapy, prosthetics, and ongoing care. No deductible for the employee. No copays. No out-of-pocket costs for the injured worker.
• Lost wages and disability: If the employee cannot work because of their injury, workers comp replaces a portion of their wages - typically around two-thirds. Benefits are classified as temporary total disability (cannot work at all during recovery), temporary partial disability (can do some work but not full duty), permanent partial disability (permanent impairment but can still work), or permanent total disability (cannot work again).
• Rehabilitation: Vocational rehabilitation and retraining if the employee cannot return to their previous job. Physical rehabilitation to restore function. The goal is to get the worker back to productive employment when possible.
• Death benefits: If a work injury is fatal, workers comp pays funeral expenses and ongoing benefits to the employee's dependents - typically a spouse and minor children.

Part Two - Employers Liability (for you)

Employers liability covers lawsuits filed by injured employees in situations where workers comp benefits alone do not apply. This includes third-party-over actions (where an injured employee sues a third party, and that third party sues you), dual-capacity claims, and certain claims by spouses or dependents. Standard employers liability limits are $100,000 per accident, $500,000 disease policy limit, and $100,000 disease per employee.

If you carry umbrella or excess liability, it typically sits on top of these employers liability limits.

Who Needs Workers Comp?

Almost every business with employees. The specific threshold varies by state, but the general rule is straightforward.

• Most states: Required once you have one or more employees
• Some states: Required once you have 3, 4, or 5 employees (thresholds vary)
• Texas: The only state where workers comp is technically optional for private employers (but going without it exposes you to direct lawsuits from injured employees with no cap on damages)
• Construction: Many states have stricter rules for construction. Some require coverage for the first employee. Some require coverage even for sole proprietors and subcontractors working on certain projects.

Even in states with higher thresholds, most contracts require workers comp regardless. General contractors require it from their subcontractors. Project owners require it. Lenders require it. If you have employees and you want to work, you need workers comp.

Owner exemptions: Most states allow sole proprietors, partners, and corporate officers to exempt themselves from workers comp coverage. Whether that is a good idea depends on your situation. Exempting yourself lowers your premium, but it means your own medical bills after a work injury come out of your pocket. For contractors working on jobsites, that is a gamble.

How Workers Comp Rates Work

Workers comp pricing confuses a lot of business owners. It is not a flat fee. Your premium is calculated from three factors that multiply together: your class code rate, your payroll, and your experience modification rate.

Class Codes

Every employee is assigned a class code based on the type of work they do. Each class code has a base rate per $100 of payroll. Higher-risk work gets a higher rate. Office work gets a low rate. Roofing gets a high rate. The rates are set by your state's rating bureau (NCCI in most states) based on the actual claims history of all businesses in that classification.

Common contractor class codes and approximate rates:

• 5551 - Roofing: One of the highest rates in construction. Rates can range from $10 to $30+ per $100 of payroll depending on the state.
• 5190 - Electrical wiring: Moderate risk. Typically $3 to $8 per $100 of payroll.
• 5474 - Painting: Moderate risk, varies by interior vs exterior and height. Typically $4 to $10 per $100.
• 5183 - Plumbing: Moderate risk. Typically $3 to $7 per $100.
• 5537 - HVAC: Moderate risk. Typically $3 to $8 per $100.
• 8227 - Excavation: Higher risk due to heavy equipment and trenching hazards. Typically $5 to $15 per $100.
• 8810 - Clerical office: Low risk. Typically $0.15 to $0.50 per $100.

These rates vary significantly by state. A roofing class code in Florida is not the same rate as the same code in Idaho. Your agent should verify the exact codes and rates for your state and operations.

Experience Modification Rate (EMR)

Your EMR is the single most important number in your workers comp program. It is a multiplier based on your company's claims history compared to other businesses in your classification. An EMR of 1.00 means you are average. Below 1.00 means you are better than average. Above 1.00 means you are worse.

Here is why it matters so much:

• EMR of 0.80: You pay 20% less than the base rate. On a $50,000 base premium, that saves you $10,000 per year.
• EMR of 1.00: You pay the base rate.
• EMR of 1.30: You pay 30% more than the base rate. On a $50,000 base premium, that costs you an extra $15,000 per year.

Your EMR is calculated by NCCI (or your state's rating bureau) based on your last three years of claims, excluding the most recent year. Every claim you have affects your EMR for three full years. One bad year of claims can cost you tens of thousands in extra premium over the following three years.

Your EMR also determines whether you can bid certain work. Many GCs and project owners require subcontractors to have an EMR under 1.00 or 1.10. A high EMR does not just cost you more - it can cost you jobs.

The Premium Formula

Your workers comp premium calculation is: (Payroll / 100) x Class Code Rate x EMR = Premium

Example: An electrical contractor with $500,000 in payroll, a class code rate of $5.50 per $100, and an EMR of 0.90:

($500,000 / 100) x $5.50 x 0.90 = $24,750 annual premium

If that same contractor had an EMR of 1.20 instead of 0.90, the premium jumps to $33,000. Same company, same payroll, same work - $8,250 more per year because of a worse claims history.

Workers Comp Cost by Trade

Because rates are driven by risk classification, costs vary dramatically across construction trades.

• Highest cost trades: Roofing, structural steel erection, demolition, tower work. These trades involve height, heavy materials, and severe injury potential. Expect workers comp to be one of the largest line items in your insurance budget.
• Moderate cost trades: Plumbing, electrical, HVAC, concrete, carpentry, painting. These are the core trades where injuries are common but typically less severe than roofing or steel work.
• Lower cost trades: Landscaping (non-tree work), fencing, some specialty finish trades, office and clerical staff. Lower exposure means lower rates, but injuries still happen.

The reason rates differ is straightforward: workers comp rates reflect the actual cost of claims in that classification. Roofing has more frequent and more severe claims than office work. The rates reflect that reality.

How to Lower Your Workers Comp Costs

Your workers comp premium is not fixed. You can directly influence it over time through five strategies.

• Safety program: A documented, enforced safety program reduces injuries. Fewer injuries means fewer claims. Fewer claims means a lower EMR. A lower EMR means a lower premium. Some carriers offer premium credits for formal safety programs - typically 2% to 5%.
• Return-to-work program: Getting injured employees back to modified duty quickly reduces the total cost of each claim. A claim that closes at $15,000 hurts your EMR far less than one that grows to $80,000 because the employee was out for six months. Offer light duty or modified work to every injured employee as soon as medically allowed.
• Accurate class coding: Make sure every employee is classified correctly. If your office manager is coded as a field carpenter, you are overpaying. If you have employees who split time between field and office work, your agent should code their payroll accordingly. Misclassification goes both ways - if field employees are coded as office workers, an audit will catch it and you will owe back premium plus penalties.
• Claims management: Report every injury immediately. Get the employee to an approved provider quickly. Stay in contact with the adjuster. Push for closure on open claims. Open claims with growing reserves are what damage your EMR. Managing claims aggressively is the single biggest lever you have.
• EMR management: Review your experience modification worksheet annually. Errors happen - incorrect claim amounts, claims assigned to the wrong policy year, claims that should have been closed but are still showing reserves. Your agent should review this with you every year before renewal and challenge any errors with the rating bureau.

Frequently Asked Questions

How much does workers comp insurance cost?

Workers comp cost depends on your classification code, payroll, and experience modification rate. A small electrical contractor with $200,000 in payroll might pay $8,000 to $12,000 per year. A roofing company with the same payroll could pay $25,000 to $50,000 because roofing class codes carry much higher rates. Office-based businesses with low-risk classifications might pay as little as $500 to $1,500 per year. Your actual premium is calculated using the formula: payroll divided by 100, multiplied by your class code rate, multiplied by your EMR.

Is workers compensation required?

In nearly every state, yes, once you have employees. The threshold varies - some states require it for the first employee, others kick in at 3 to 5 employees. Texas is the only state where private employers can opt out entirely, but doing so exposes you to unlimited employee injury lawsuits. For construction, many states have stricter requirements and lower thresholds. Most contracts require it regardless of state law.

What is an experience modification rate (EMR)?

Your EMR is a number that adjusts your workers comp premium based on your claims history compared to other businesses in your industry. An EMR of 1.00 is average. Below 1.00 means fewer claims than average, so you pay less. Above 1.00 means more claims, so you pay more. It is calculated based on three years of claims data. Your EMR directly impacts your premium and your ability to bid work - many GCs require an EMR under 1.00 or 1.10 from their subcontractors.

What happens if I do not have workers comp?

Operating without required workers comp coverage is illegal in most states. Penalties include fines (often $1,000 per day or more of non-compliance), criminal charges in some states, personal liability for all employee injury costs, stop-work orders that shut down your job sites, and loss of contractor licenses. Beyond the legal penalties, an employee injury without workers comp coverage means you pay every dollar of medical bills, lost wages, and legal fees out of your own pocket with no cap.

Can I exempt myself as an owner?

Most states allow sole proprietors, LLC members, partners, and corporate officers to exempt themselves from workers comp coverage. This lowers your premium because your payroll is excluded from the calculation. Whether it is a good idea depends on what you do. If you sit in an office, the risk is low. If you are on a roof or in a trench every day, exempting yourself means a serious injury comes entirely out of your savings. Many contractors choose to include themselves in coverage because the premium cost is small compared to the potential exposure.

Get Workers Comp That Protects Your Business and Your People

Workers comp is not just a cost - it is a system you can manage. The right classification, the right safety program, and the right claims strategy can save you thousands every year while keeping your employees protected and your EMR competitive.

If your workers comp premium feels too high, your EMR is climbing, or you are not sure your classifications are right, call the Grit team. We will review your current program, check your mod worksheet for errors, and show you exactly where the savings are.

Call us at (801) 505-5500 or request a quote online.