Workers' Comp in Illinois: 2026 Requirements for Employers

Short answer: workers' comp in Illinois is required as soon as you have one employee, even part-time. Coverage has to be in place from the employee's first day. Sole proprietors, partners, corporate officers, and LLC members can opt themselves out in writing, but an employer that knowingly goes without coverage faces fines of up to $500 per day, with a $10,000 minimum, possible criminal charges, and a stop-work order that can shut the business down.

Bliss Marc is based in Schaumburg and has helped Illinois employers with workers' comp for years. This guide covers who needs coverage, who can opt out, what happens if you don't comply, and how Illinois rates are set for 2026.

Key takeaways

• Illinois requires workers' comp for almost every employer with one or more employees, full-time or part-time.
• Owners can exclude themselves (sole proprietors, partners, corporate officers, LLC members) by notifying their insurer in writing. They can't exclude their employees.
• Knowingly failing to insure can bring fines of up to $500 per day (minimum $10,000), personal liability for corporate officers, criminal charges, and a work-stop order.
• For 2026, NCCI filed a 1.2% decrease in Illinois voluntary-market loss costs, the benchmark insurers use to set rates.

Who must carry workers' comp in Illinois?

According to the Illinois Workers' Compensation Commission (IWCC), if you have one employee, even a part-time employee, you must obtain workers' compensation insurance. There is no minimum number of employees and no waiting period. Coverage applies from the date of hire.

The requirement applies to employees who are hired, injured, or whose employment is localized in Illinois. If you're based in another state but have employees working in Illinois, make sure your policy lists Illinois.

Illinois employers can meet the requirement in one of two ways:

• Buy a policy from a licensed insurance company. This is how nearly all small and mid-size businesses comply.
• Self-insure, which requires approval from the IWCC and is generally practical only for large, financially strong employers.

Who can opt out?

The IWCC says these business owners may exclude themselves from coverage:

• Sole proprietors
• Business partners
• Corporate officers
• Members of limited liability companies

To opt out, you must notify your insurance carrier in writing, following the instructions in Section 3(17)(b) of the Illinois Workers' Compensation Act. Opting out removes you from the policy. It doesn't remove the obligation to cover your employees.

A word of caution: owners who opt out have no workers' comp benefits if they're hurt on the job. Whether that makes sense depends on your health coverage, disability insurance, and how physical your work is.

What about independent contractors?

Workers you pay on a 1099 aren't automatically exempt. If someone works under your direction and control, Illinois may consider them an employee no matter what your agreement says. Also, if you hire subcontractors who don't carry their own workers' comp, your insurer may add their payroll to your policy at the annual audit. Always collect a certificate of insurance before a subcontractor starts work. For the full picture, see our guide to workers' comp for independent contractors and 1099 workers.

Penalties for not carrying workers' comp in Illinois

Illinois takes noncompliance seriously. Under the rules described by the IWCC and the Illinois Department of Insurance:

• Fines: An employer that knowingly and willfully fails to obtain insurance can be fined up to $500 for every day of noncompliance, with a minimum fine of $10,000. Fines can be higher for repeat violations.
• Personal liability: Corporate officers can be held personally liable if the company doesn't pay the penalty.
• Criminal charges: Negligently failing to obtain coverage is a Class A misdemeanor, and knowingly failing to do so is a Class 4 felony.
• Work-stop orders: The Commission can order an employer found to have knowingly failed to provide insurance to stop all business operations.

An uninsured employer can also be sued directly by an injured employee and lose the legal protections that insured employers have.

Other employer obligations

• Post the notice. The IWCC requires employers to post a completed workers' compensation notice in a conspicuous place at every work site.
• Report injuries promptly. Tell your insurer about an injury as soon as you learn of it. Illinois workers generally must notify their employer of an accident within 45 days, but faster reporting leads to better outcomes and lower claim costs.
• Keep accurate payroll records. Your premium is based on payroll by job classification, and the insurer will audit it at the end of the policy year. See our guide on how to prepare for a workers' comp audit.

Employees and employers can verify an employer's coverage through the IWCC's online insurance search or by calling the Insurance Compliance Division.

How Illinois workers' comp rates are set in 2026

Illinois uses advisory loss costs filed by the National Council on Compensation Insurance (NCCI). Loss costs cover expected claim payments. Each insurer applies its own multiplier for expenses and profit, so quotes can vary a lot from carrier to carrier for the same business.

For policies effective January 1, 2026, NCCI filed a 1.2% decrease in voluntary-market loss costs and a 0.8% increase in assigned risk rates. The assigned risk market is the insurer of last resort for businesses that can't find coverage voluntarily. NCCI pointed to slightly better claims experience and the impact of the state's medical fee schedule.

Your premium follows the standard formula: payroll ÷ 100 × the rate for your class code × your experience modification, plus any insurer credits or debits. Our guide to what workers' comp costs in California and Illinois walks through examples.

How to get Illinois workers' comp coverage

1. List your employees by job duty and estimate annual payroll for each type of work.
2. Confirm class codes. Office staff (class 8810) cost far less than field employees, so don't let clerical payroll get lumped in with higher-risk work.
3. Compare carriers. Because Illinois insurers set their own multipliers, an independent agent who shops several carriers can make a real difference.
4. Decide on owner coverage. If you're opting out, put it in writing to your carrier.
5. Bind before your first hire, and post the required notice.

Ready to put coverage in place? Our Illinois workers' compensation insurance page covers rates, class codes and how we place coverage from our Schaumburg office. Home care employers should also see insurance for Illinois home services and home health agencies.

Want a quick number? Our online estimator gives Illinois employers an instant workers' comp premium range. If you like it, apply online and a licensed agent from our Schaumburg office will follow up.

Get your Illinois workers' comp estimate →

More on our Illinois insurance services and workers' compensation programs.

Frequently asked questions

Is workers' comp required in Illinois for one employee?

Yes. Illinois requires workers' compensation insurance if you have even one employee, including part-time employees.

Can I opt out of workers' comp in Illinois?

Sole proprietors, partners, corporate officers, and LLC members can exclude themselves by notifying their insurer in writing under Section 3(17)(b) of the Workers' Compensation Act. Employees can't be excluded.

What is the penalty for not having workers' comp in Illinois?

Knowingly failing to carry coverage can bring fines of up to $500 per day with a $10,000 minimum, personal liability for corporate officers, misdemeanor or felony charges, and a work-stop order.

Do part-time employees need workers' comp in Illinois?

Yes. The requirement applies to part-time employees the same as full-time employees.

Are Illinois workers' comp rates going down in 2026?

Slightly. NCCI filed a 1.2% decrease in voluntary-market loss costs for January 1, 2026. Your actual premium depends on your carrier, class codes, payroll, and claims.

This article is general information, not legal advice. For questions about your obligations under the Illinois Workers' Compensation Act, consult the Illinois Workers' Compensation Commission or an attorney. Bliss Marc International Corporation is a licensed insurance agency, Illinois License #100299879 and California License #0H92044.