Workers Comp for Contractors: What It Costs and Why You Need It

The $180K Lesson

A framing contractor in suburban Chicago had four guys on his crew. He’d been running without workers comp for about two years — he knew he should have it, but the quotes he’d gotten were expensive, and nothing bad had happened. Until it did.

One of his employees fell from scaffolding on a second-story framing job. Broken femur, torn rotator cuff, surgery, physical therapy, and six months off work. The total medical bill: $180,000. And because there was no workers comp policy, every dollar came directly from the contractor. Personally.

He ended up selling his truck and equipment to cover the initial bills. The employee’s attorney came after him for additional damages. The business closed within a year.

Look. I’m not telling you this to scare you. I’m telling you because I’ve seen versions of this story a dozen times, and it’s always the same: a contractor who thought workers comp was too expensive until they found out what NOT having it costs.

How Workers Comp Is Calculated

Workers comp pricing is straightforward once you understand the formula. It’s based on three things:

Classification code rate × payroll (per $100) × experience modification rate = your premium.

Every trade has a classification code assigned by the National Council on Compensation Insurance (NCCI) or your state’s rating bureau. That code has a base rate per $100 of payroll. Higher-risk trades get higher rates.

So if your class code rate is $8.00 per $100 of payroll, and your annual payroll is $200,000, the base premium is $8.00 × 2,000 = $16,000. Then your experience modification rate (EMR) adjusts that up or down based on your claims history.

A new business without claims history gets an EMR of 1.00 — meaning no adjustment. If you’ve had claims, your EMR goes above 1.00 (you pay more). If you’ve been claims-free for several years, it drops below 1.00 (you pay less).

Workers Comp Cost by Trade

Here are typical workers comp rates and annual costs by trade, assuming $250,000 in annual payroll and a 1.00 experience mod:

Trade	Class Code Rate (per $100)	Est. Annual Premium ($250K payroll)
Painting (interior)	$2.50–$5.00	$6,250–$12,500
Electrical	$3.00–$5.50	$7,500–$13,750
Plumbing	$3.50–$6.00	$8,750–$15,000
HVAC	$3.00–$5.50	$7,500–$13,750
General Contracting	$5.00–$9.00	$12,500–$22,500
Framing / Carpentry	$8.00–$14.00	$20,000–$35,000
Roofing	$10.00–$18.00	$25,000–$45,000
Masonry	$6.00–$10.00	$15,000–$25,000

The spread between trades is enormous. A painting company paying $250K in payroll might pay $8,000/year for workers comp. A roofing company with the same payroll could pay $35,000+. The risk profile of each trade drives everything.

And these are national averages — your state matters too. Colorado and Illinois have different rate structures, and some states like Ohio, Washington, and North Dakota run monopolistic state funds where you can only buy workers comp from the state.

Experience Modification Rate Explained

Your EMR is basically a report card for workplace safety. Here’s how it works in plain English:

NCCI (or your state bureau) compares your actual claims history to the expected claims for businesses of your size in your trade. If your claims are lower than expected, your EMR goes below 1.00. If they’re higher, it goes above 1.00.

An EMR of 0.85 means you pay 15% less than the base rate. An EMR of 1.25 means you pay 25% more. On a $20,000 base premium, that’s the difference between paying $17,000 and $25,000. That $8,000 gap adds up fast over multiple years.

Here’s the thing. Your EMR is calculated on a rolling three-year window, excluding the most recent policy year. So a bad claim this year won’t hit your EMR until next year — and it’ll affect your rates for three full years after that.

What Happens When You Don’t Carry It

In most states, workers comp is legally required as soon as you have one employee (some states set the threshold at 3–5 employees). Operating without it can result in:

Personal liability for all medical bills. If an employee gets hurt and you don’t have workers comp, you’re personally responsible for every dollar of their medical treatment, lost wages, and rehabilitation. A single serious injury can easily run $100,000–$500,000.

State fines and penalties. Most states impose fines of $500–$1,000 per day of non-compliance. Some states make it a criminal misdemeanor. In Illinois, it’s a Class A misdemeanor for the first offense and a Class 4 felony for the second.

Loss of contracts. Every legitimate GC requires subs to carry workers comp. No WC certificate means no work. Period.

Lawsuits without protection. When you carry workers comp, it creates a “grand bargain” — your employee gets guaranteed benefits regardless of fault, and in exchange, they typically can’t sue you for additional damages. Without workers comp, that protection disappears, and the employee can sue you directly for negligence, pain and suffering, and punitive damages.

How to Lower Your Workers Comp Rate

Keep a clean safety record. Nothing lowers your EMR faster than going claim-free for three consecutive years. Invest in safety training, proper equipment, and jobsite protocols.

Classify employees correctly. Make sure your payroll is assigned to the right class codes. If you have office staff, they should be coded separately from field workers — office codes are much cheaper.

Manage claims aggressively. When an injury does happen, report it immediately, get the employee proper medical care, and work with your carrier on a return-to-work program. Small claims that get managed well have much less impact on your EMR than claims that spiral.

Shop multiple carriers. Workers comp rates vary significantly between carriers, even for the same class code and payroll. We quote with 30+ carriers to find the best rate every time. Use our Contractor Insurance Calculator to get started.

Get Your Workers Comp Quote

Whether you’re buying workers comp for the first time or your renewal just came in high, we can help. One application gets you quotes from 30+ carriers — and we can usually bind same-day if you need coverage to start a job.

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Bobby Friel is the founder of Direct Insurance Services, specializing in commercial insurance for contractors, HOAs, restaurants, and commercial landlords across 29 states. He’s helped hundreds of contractors find affordable workers comp — even those who’ve been turned down by other agents due to high EMRs or tough class codes.