In Missouri, workers comp is priced off your payroll and the kind of work your people do, not a flat fee. As of mid-2026, Missouri prices have been broadly flat to slightly up: the advisory rating organization NCCI filed a 1.3 percent average increase in loss costs effective January 1, 2026, only the second increase in six years after a long stretch of declines. What you actually pay still depends on your own numbers.
Who this is for: Missouri owners trying to understand what drives a workers comp quote and how to keep the price down.
The short version
- Price is built from your payroll and the type of work, not a flat rate.
- The category your work falls into for pricing, called the class code, is the biggest driver.
- A score based on your past claims, the experience modification rate, raises or lowers your cost.
- Owner elections change the payroll that gets counted, which changes the premium.
- Missouri loss costs rose about 1.3 percent for 2026 after years of decline.
What drives your price
A handful of factors set your premium. Understanding them is how you avoid overpaying.
| Factor | How it moves your price |
|---|---|
| Payroll | Premium is calculated per 100 dollars of payroll, so more payroll means more premium |
| The category your work falls into (the class code) | Riskier work carries a higher rate; a misclassification can cost you for years |
| Your claims-history score (the experience modification rate) | A history of claims raises it; a clean record lowers it |
| Owner elections | Owners who opt out remove their pay from the counted payroll |
| State loss-cost changes | The yearly NCCI filing nudges the whole market up or down |
How Missouri sets the baseline
Missouri is an NCCI state. NCCI collects claims data and files advisory loss costs for each type of work, and the Department of Commerce and Insurance reviews them. But those loss costs are not your final rate. Each insurer applies its own multiplier on top, so two carriers can quote the same business quite differently. For 2026, the average filed change was about 1.3 percent up, but it varied by industry, with manufacturing up more and contracting nearly flat. Because carriers price differently, shopping more than one is how you find the best number.
Illustrative ranges for small Missouri businesses
These are rough annual ranges, not quotes. Your real price depends on payroll, claims history, owner elections, and your exact class of work.
| Business type | Workers comp (est. per year) |
|---|---|
| Office or professional services | 500 to 2,400 dollars |
| Restaurant or cafe | 2,500 to 10,000 dollars |
| General contractor or trades | 3,500 to 14,000 dollars |
| Retail store | 1,200 to 4,800 dollars |
| Cleaning or janitorial | 3,000 to 11,000 dollars |
An HVAC example
Illustrative, not a quote. An HVAC contractor in Lee's Summit with four installers and a 300,000 dollar payroll gets very different quotes from two carriers, because each applies its own multiplier to the same NCCI loss cost. By making sure the office manager is coded as clerical rather than as a field installer, and by keeping a clean claims record, the owner brings the price down without cutting coverage. We review the classifications and shop multiple carriers before the owner buys. See our workers comp for HVAC contractors page.
Real questions Missouri owners ask
How much does workers comp cost in Missouri?
There is no flat price. It is built from your payroll and the type of work, then adjusted by your claims history. Ranges run from a few hundred dollars a year for an office to many thousands for construction.
How is workers comp priced in Missouri?
Premium is calculated per 100 dollars of payroll, multiplied by a rate for your type of work. Your claims-history score then raises or lowers it, and each insurer adds its own multiplier.
Did Missouri workers comp rates go up for 2026?
On average, slightly. As of mid-2026, NCCI filed a 1.3 percent average increase in advisory loss costs effective January 1, 2026, the second increase in six years. The change varied by industry.
Why does the kind of work I do change my price? (the class code)
It is the category your work falls into for pricing. Riskier categories carry higher rates, so being placed in the wrong one, such as coding office staff as field labor, can make you overpay for years.
What's the claims-history score that changes my price? (the experience modification rate)
It is a score based on your past claims that raises or lowers your premium. A history of claims pushes it up; a clean record pulls it down. We review it each year for errors.
Can I lower my Missouri workers comp cost?
Yes. Classify your payroll correctly, keep a clean claims record, use owner elections where they fit, and shop more than one carrier, since each applies its own multiplier to the same loss costs.
Does opting owners out reduce the premium?
It can, because an owner who opts out removes their pay from the counted payroll. That lowers the premium but also removes that owner's own coverage, so weigh the savings against the lost protection.
Why Missouri owners choose Morrow
- We shop the right market for you. In Missouri you buy workers' comp on the open, competitive market from any private insurer licensed in the state, because Missouri has no state fund after Missouri Employers Mutual became a fully private company in 2025, and if no private carrier will take you, the insurer-of-last-resort pool run by NCCI and serviced by Travelers is the guaranteed backstop, so we can shop your rate freely and still have a fallback for hard-to-place work.
- We catch pricing mistakes. Your price depends heavily on the category your work falls into for pricing (the class code). Put people in the wrong category and you overpay for years. We review your payroll and classifications before you buy.
- Proof of coverage, fast. Need a certificate (proof of coverage) for a general contractor or a landlord before Monday? We turn those around the same business day for most carriers.
- We help lower the score that drives your price. Insurers give you a score based on your past claims that raises or lowers your cost (the experience modification rate). We review it each year, flag errors, and connect you with return-to-work and safety resources that bring it down.
- Real people when a claim happens. When someone gets hurt, we stay involved through the life of the claim, not just at renewal.
Related Missouri guides
Every Missouri business is set up a little differently. These companion guides answer the same question for other situations, plus the national explainers behind the terms used here.
- Business insurance in Missouri (start here)
- Workers comp: the owner's overview
- I own an LLC: do I need workers comp?
- I'm a sole proprietor: do I need workers comp?
- I own a corporation (C-corp or S-corp): do I need it?
- We're a partnership: do we need workers comp?
- We're a nonprofit: do we need workers comp?
- My workers are 1099: do I still need it?
- Only part-time or seasonal staff: do I need it?
- I only employ family: do I need workers comp?
- Remote or out-of-state staff: do I need coverage?
- What happens if I don't carry workers comp?
- How do I get workers comp (even if turned down)?
- What insurance do I need for a contractor license?
- Workers compensation insurance, explained
- What workers comp costs (national guide)
- Glossary: workers comp class code
- What is an experience mod, and how do I lower it?
- Missouri HVAC workers comp
This guide is general information, not legal advice. Missouri rules and penalty amounts can change, so verify current requirements with the Missouri Division of Workers' Compensation or a licensed advisor before you rely on them. Last updated: July 2026.