Protect your crew at work: workers’ comp in Illinois

Your crew is the business. When someone gets hurt on a roof, a loading dock, or a highway shoulder, workers’ compensation insurance pays for their care and part of their lost pay. It also gives you a clear, orderly way to handle the claim. Here is how the Illinois rules work in 2026 and what to keep current.

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Who needs coverage

The Illinois Workers’ Compensation Act (820 ILCS 305, the state law that sets these rules) reaches almost every employer. It covers any business that sells goods or services to the public once annual payroll passes $1,000. Your employees are protected from their first day on the job.

The law applies automatically to work it calls “extra hazardous.” That list covers most of the Chicago businesses we work with:

• Construction, remodeling, demolition, excavating, and electrical work
• Trucking and other carriage by land, including loading and unloading, once you have more than two employees
• Warehouses and storage operations
• Shops that manufacture or fabricate goods, or use power-driven equipment
• Restaurant kitchens and bars

Owners and officers

Sole proprietors, partners, and LLC members can choose to put themselves on the policy. Many owners who work alongside their crew do, because an injured owner stalls the whole job. Corporate officers are included by default and can withdraw by giving the insurance company written notice.

Contractors and subcontractors

If you hire a subcontractor for construction or other covered work, Illinois can hold you responsible for the sub’s injured employees if the sub is uninsured. A certificate of insurance (a one-page proof of coverage) from every sub, collected before they start, keeps those claims with the sub’s own insurance company. You can also confirm a company’s coverage on the Commission’s free Employer Insurance Coverage Search.

What the policy pays

The benefits are set by state law. Most are based on the injured worker’s average weekly wage, which means their gross pay over the 52 weeks before the injury.

Wage benefits start on the fourth lost workday. If the time off reaches 14 calendar days, the first three days are paid too. The first payment should go out within 14 days after you learn of the injury.

The standard policy also includes employer’s liability coverage. It responds when a workplace injury leads to a lawsuit against your business.

Your duties as an employer

Illinois asks four things of every covered employer:

1. Carry a workers’ compensation policy, or get the Commission’s approval to self-insure.
2. Post the Commission’s workplace notice at each location. It tells employees who your insurance company is.
3. Report injuries on Form 45, the Employer’s First Report of Injury. Deaths are due within two working days. Injuries that cost more than three scheduled workdays are due within one month.
4. Pay the full premium yourself. Illinois law keeps every dollar of it off employee paychecks.

Employees have 45 days to tell you about an accident, though sooner is better for everyone. Call your insurance company as soon as you hear, even if you have questions about what happened. A formal claim can be filed with the Commission within three years of the injury, or within two years of the last benefit payment.

Why staying insured matters

Illinois treats a lapse seriously. Each day without required coverage is a separate offense. A negligent lapse is a Class A misdemeanor and a knowing one is a Class 4 felony.

Civil penalties can run up to $500 a day, with a $10,000 minimum. For a knowing lapse, the Commission can also order work to stop until you show proof of insurance. A policy that renews on time keeps you clear of all of it.

Getting class codes right

Your premium is built from payroll and class codes. A class code is a number that groups jobs by risk, so a roofer and a dispatcher sit in different codes with different rates. After the policy year ends, the insurance company runs a premium audit, a review of your actual payroll by code, and adjusts the bill.

A few habits keep the audit smooth:

• Match every role on your payroll to the right class code
• Keep office staff payroll tracked separately from field or driving payroll
• Update your estimated payroll when you add crews or trucks mid-year
• Keep a current certificate on file for every subcontractor you paid

Trucking and owner-operators

Fleets often run a mix of employee drivers and leased owner-operators. Employee drivers, dock workers, and mechanics belong on your workers’ comp policy. Owner-operators who run as independent businesses often carry occupational accident insurance, which pays medical and disability benefits after an on-the-job injury. For a full walk-through of how we set up policies for Chicago contractors, fleets, and shops, see our workers’ compensation insurance page.

Your next step

Pull three things this week: your current declarations page, a year-to-date payroll report, and your list of subcontractors. Check that every job title has a class code, every sub has a certificate, and the Commission’s notice is posted at each site. Twenty minutes now means a faster, smoother claim if someone on your crew gets hurt.