Illinois Workers’ Compensation FAQ

Clear answers from Matthew C. Jones, an experienced Chicago workers' compensation lawyer, about reporting injuries, filing claims, wage benefits, light duty, retaliation, denied treatment, and common claim problems in Illinois.

Answered by Matthew C. Jones, Chicago workers’ compensation lawyer
Matthew C. Jones has 20 years of experience helping injured workers in Chicago and across Illinois recover medical care, wage benefits, and fair workers’ comp settlements.
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Report a work injury as soon as possible. In many Illinois workers’ compensation cases, the law gives you up to 45 days to notify your employer, but waiting can trigger disputes about whether the injury happened at work or whether notice was timely.

If your employer is already challenging notice or claiming the injury was never reported properly, that is a good time to get legal advice.

Read: 5 Steps to File for Workers’ Comp in Illinois

Start by reporting the injury to your employer, getting medical care, and making sure the accident, body parts, and work restrictions are documented accurately. From there, your claim may involve insurance paperwork, treatment approvals, wage checks, and possibly disputes before the Illinois Workers’ Compensation Commission.

If you miss steps early, it can make the case harder later — especially if the insurer denies the claim or delays treatment.

Read the full filing guide

Usually yes. Illinois workers’ compensation is generally a no-fault system, which means benefits may still be available even if you contributed to the accident.

A pre-existing condition also does not automatically disqualify you. If your work accident aggravated, accelerated, or worsened the condition, you may still have a valid claim. These are common disputes in Illinois workers’ comp cases, especially when insurers try to blame everything on degeneration or prior treatment.

That depends on the type of benefit and how your Average Weekly Wage (AWW) is calculated. In many cases, wage-loss benefits are based on about two-thirds of your Average Weekly Wage, but the exact amount depends on whether you are completely off work, earning less on light duty, or dealing with permanent restrictions and long-term wage loss.

If the insurance company uses the wrong wage number, leaves out overtime, or undervalues your restrictions, both your checks and your settlement can be too low.

Read: How Much Does Workers’ Comp Pay in Illinois?

TTD usually applies when your doctor takes you completely off work. TPD generally applies when you are working but earning less because of the injury. PPD compensates you for permanent impairment after you reach maximum medical improvement. Maintenance benefits may apply when you have long-term restrictions and are in vocational rehabilitation or a job search.

These benefits get confused all the time, and insurers do not always explain them correctly.

Read: Types of Workers’ Comp Benefits in Illinois

If your employer offers work within your restrictions, that can affect whether you receive TTD or TPD benefits. But if the so-called light duty does not actually fit your restrictions, or if your employer says there is no work available, the benefits analysis changes quickly.

This is one of the most common points where injured workers get underpaid or pushed into the wrong return-to-work decision.

Read: Light Duty Work in Illinois Workers’ Compensation
Read: What If My Job Cannot Accommodate My Work Restrictions?

Illinois law generally prohibits retaliation against employees for filing or pursuing a workers’ compensation claim. That includes firing, demotion, threats, or harassment because you asserted your rights.

At the same time, real workplaces are messy, and employers sometimes try to disguise retaliation as something else. If you were fired after reporting an injury or while dealing with work restrictions, document what happened and get legal advice quickly.

Read: Can You Be Fired for Filing a Workers’ Compensation Claim in Illinois?

If your TTD checks stopped, dropped, or started arriving late, or if treatment or surgery was denied, do not assume the insurance company is right. These problems often happen because the insurer claims you can return to work, questions treatment, relies on an IME, or says your doctor’s paperwork is incomplete.

When a claim stalls, delay usually benefits the insurance company — not you.

Read: Workers’ Comp Stopped My Checks
Read: Workers’ Comp Denied My Surgery in Illinois

Free consultation

Need help with your Illinois workers’ comp case?

If your claim was denied, your checks stopped, treatment was delayed, or your employer is pushing work that does not fit your restrictions, contact McHargue & Jones for a free consultation.

Start Your Free Case ReviewCall (312) 739-0000

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Chicago Workers’ Compensation FAQ (2025 Answers) | McHargue & Jones, LLC
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Chicago Workers’ Compensation FAQ (2025 Answers) | McHargue & Jones, LLC
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Get clear answers to the most common Chicago workers’ compensation questions, including deadlines, benefits, AWW, IMEs, and retaliation laws. Learn your rights and how to protect your work injury claim.
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McHargue and Jones, LLC
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