You were injured at work. Your doctor took you off duty. Days pass, then weeks, and your temporary total disability check has not arrived — or it was stopped without any explanation. Your request for medical treatment is sitting without authorization. You are wondering whether the insurance company can simply do nothing while you fall behind on your bills.
The answer is no. The Illinois Workers’ Compensation Act provides specific, enforceable penalties when an employer or its insurance carrier unreasonably delays, underpays, or withholds the benefits you are owed. Understanding these penalties — and how to trigger them — can make a meaningful difference in how quickly your claim moves and how much compensation you ultimately receive.
What the Rules Require from the Start
Illinois Commission Rule 9110.70 (Ill. Admin. Code Title 50) establishes a clear obligation. When an employee becomes unable to work due to a work-related injury, the employer or its insurance carrier has 14 calendar days from receiving notice of that inability to work to take one of three steps: begin paying temporary total disability (TTD) benefits; provide a written explanation of why benefits are being denied; or explain in writing what additional information is needed and why.
The same rule applies when an employer stops TTD payments before an employee has actually returned to work. The employer must provide a written explanation for the termination no later than the date of the last payment. If the employer denies liability for medical care, it must promptly notify the employee in writing of the basis for that denial.
These requirements are not suggestions. Failure to comply is a factor the Commission weighs directly when an injured worker petitions for penalty compensation.
Section 19(l): The Per Diem Penalty for Withholding Benefits
If you have made a written demand for payment of your medical benefits under Section 8(a) or your lost wage benefits under Section 8(b) of the Illinois Workers’ Compensation Act, and the insurance company fails or refuses to pay without good cause, Section 19(l) of the Act (820 ILCS 305/19(l)) requires the Commission to award you additional compensation of $30 for every day the benefits remain wrongfully withheld, up to a maximum of $10,000.
Critically, a delay of 14 days or more from the date of your written demand creates a rebuttable presumption of unreasonable delay. This means the burden shifts to the insurance company to explain why its delay was justified. If it cannot provide a satisfactory explanation, the per diem penalty applies.
The practical lesson: make your written demand as early as possible. The 14-day clock for the presumption of unreasonable delay does not start until you put the demand in writing.
Section 19(k): The 50% Penalty for Vexatious Conduct
When the insurance company’s conduct goes beyond ordinary delay into what the law calls “unreasonable or vexatious delay” or an intentional underpayment of compensation, Section 19(k) of the Act authorizes the Commission to award additional compensation equal to 50% of the amount owed at the time of the award. In a case involving months of unpaid TTD benefits or a substantial permanent partial disability award, this can represent a significant sum.
Section 19(k) also applies when an insurance company pursues proceedings “which do not present a real controversy” — in other words, when the company contests a claim with no legitimate factual or legal basis. Frivolous defenses are themselves grounds for a penalty.
Section 16: Attorney’s Fees and Costs
Under Section 16 of the Illinois Workers’ Compensation Act, when the Commission finds that an employer or insurance carrier has been guilty of delay, unfairness, unreasonable or vexatious conduct, intentional underpayment, or frivolous defenses, the Commission may assess all or part of the injured worker’s attorney’s fees and costs against the responsible party. This provision works hand-in-hand with Section 19(k) — when a vexatious delay penalty under 19(k) is awarded, a fee award under Section 16 typically follows.
The combined effect of Sections 19(k) and 16 is significant: an insurance company that delays, underpays, or litigates without a legitimate basis may end up paying 50% more than the underlying award, plus the injured worker’s full attorney’s fees. This structure is intended to deter bad-faith conduct and make injured workers whole.
What Triggers Penalties — and What Does Not
Penalties are not awarded simply because an insurance company disputes a claim. Illinois courts have drawn a clear line between legitimate disputes and bad-faith conduct. Simple mistakes, inadvertent errors, or genuine questions of law or fact do not result in penalties.
But when an insurance company takes a position it has no reasonable basis to take, the outcome can be different. In McDonald’s v. Illinois Workers’ Compensation Commission, 2022 IL App (1st) 210928WC, a McDonald’s worker injured herself pulling a box from a refrigerator. She went to the emergency room the same day. Her supervisor completed an incident report. The store owner acknowledged the accident. Despite overwhelming evidence that a work injury had occurred, McDonald’s contested the accident and the employee’s notice of the injury.
The Appellate Court affirmed penalties and attorney’s fees. The court held that an employer must have a genuine, reasonable basis for the position it takes — that “a position is not legitimate or reasonable simply because the Act allows it.” McDonald’s conduct, the court found, served no purpose other than to delay resolution and increase the time and cost imposed on the injured worker.
The standard is whether the insurance company’s conduct reflects deliberate bad faith or an improper purpose — not whether it was technically permitted to raise a defense.
What This Means for Your Claim
If your workers’ compensation benefits are delayed, there are concrete steps you can take. Make a written demand for payment as soon as possible — this triggers the 14-day clock under Section 19(l) and preserves your right to per diem penalty compensation. Keep careful records of every denial, every phone call, and every instance of delayed authorization.
If your TTD benefits are terminated or your medical care is denied without a written explanation, that failure is itself a violation of Commission Rule 9110.70 and relevant evidence in a penalty petition. You are not required to wait indefinitely for an insurance company to do what the law already requires.
An experienced workers’ compensation attorney can identify when penalty provisions apply, make the written demands that trigger the statutory protections, and file petitions for penalties and attorney’s fees when the evidence supports them.
If you have been injured at work and an insurance company is delaying or denying your benefits, the attorneys at The Law Offices of Millon & Peskin, Ltd. are here to help. We represent injured workers throughout the Chicagoland area, including DuPage, Cook, Will, Kane, and Lake counties. Contact us today for a free consultation to discuss your rights and your options. Our phone number is 630-449-3884.