After a construction injury in Illinois, your treating physician may clear you to return to work with restrictions, lighter tasks, limited lifting, no overhead work, or reduced hours. When that happens, your employer may offer you a “light duty” position. Understanding the light duty workers’ comp Illinois rules can be the difference between continuing to receive the wage benefits you are owed and unknowingly giving them up. The rules governing light duty assignments under Illinois workers’ compensation law are specific, and your paycheck, and your claim, can depend on getting them right.
This article provides general legal information; consult a licensed Illinois attorney for advice specific to your situation.
What Light Duty Means Under Illinois Workers’ Compensation Law
Light duty refers to a work assignment that is modified to accommodate the physical restrictions placed on an injured worker by their treating physician. Under 820 ILCS 305/8(a), employers are required to provide, and pay for, all necessary medical care and treatment for a work-related injury. The treating physician, not the employer and not the insurance adjuster, is the authority on what that injured worker can and cannot physically do during recovery. Those restrictions must be in writing, and the written restrictions from the treating physician are the controlling document when it comes to any light duty offer.
If your doctor says you cannot lift more than ten pounds, cannot stand for more than two hours, or cannot work on uneven terrain, those are the limits of any lawful light duty assignment. An employer cannot simply tell you to “try” tasks that fall outside those written restrictions and expect you to comply without consequence to your benefits.
When You Can Decline a Light Duty Offer
Not every light duty offer is a lawful one. If the assignment your employer proposes exceeds the written restrictions from your treating physician, in terms of physical demands, hours, travel requirements, or job duties, you may be entitled to decline that offer without losing your workers’ compensation wage benefits. The key standard is whether the offered work falls within the restrictions your treating doctor has actually documented.
If an employer offers modified work that is genuinely within your physician’s written restrictions and you refuse it without a valid medical reason, you may jeopardize your entitlement to temporary total disability (TTD) benefits. This is a high-stakes determination that turns on the specific facts of your situation, the exact language of your physician’s restrictions, and the nature of the job being offered. Before declining any light duty assignment, consult with an attorney who handles Illinois construction workers’ compensation cases, the consequences of getting this decision wrong can be significant.
How Temporary Partial Disability (TPD) Fills the Wage Gap
One of the most important, and least understood, benefits in Illinois workers’ compensation is temporary partial disability, known as TPD. Under 820 ILCS 305/8(a), when an injured worker returns to light duty and earns less than they did before the injury, the workers’ compensation system is designed to make up a portion of that wage loss. The formula is straightforward: TPD benefits equal two-thirds of the difference between the worker’s pre-injury average weekly wage (AWW) and the wage they earn in the light duty position.
For example, if a construction worker was earning $1,200 per week before the injury and the light duty assignment pays $700 per week, the difference is $500. Two-thirds of that difference, $333.33, would be payable as a weekly TPD benefit on top of the light duty wages. The IWCC Handbook on Workers’ Compensation explains temporary partial disability as a wage-replacement mechanism intended to protect workers who are medically able to do some work but not yet fully recovered to pre-injury capacity.
A second example shows why it matters to calculate this correctly. Suppose a union electrician averaged $1,600 per week before a shoulder injury, including regular overtime that should be factored into the average weekly wage calculation. If the light duty office job pays $900 per week with no overtime, the wage difference is $700, and two-thirds of that is $466.67 per week in TPD. Leaving overtime out of the AWW calculation, an error that happens more often than it should, would understate both the wage gap and the TPD payment owed, quietly shorting the worker every week the light duty assignment continues.
The Role of the Treating Physician’s Written Restrictions
Illinois law places the treating physician, the doctor actually managing your recovery, at the center of the light duty determination. Under 820 ILCS 305/8(a), the employer and insurer are responsible for providing medical care, but the physician directs what that care looks like and what work the patient can safely perform. Restrictions must be specific, in writing, and updated as recovery progresses. For background on how you obtain and keep that treating physician relationship, see our guide on choosing your own doctor for a work injury.
It is not enough for a supervisor to say a task “looks light enough.” The comparison is always against the written document from the treating physician. If your employer assigns you to a modified position and then adds duties not covered, or expressly excluded, by your restrictions, raise it with your physician immediately and document the discrepancy. Allowing restrictions to be informally expanded can compromise both your recovery and your legal position.
Transitioning Between TTD, TPD, and Full Return
Workers’ compensation wage benefits in Illinois are not static, they change as your medical condition evolves. When you are completely unable to work, you receive temporary total disability (TTD) benefits. Once a light duty offer within your restrictions is available and accepted, you transition to TPD benefits under 820 ILCS 305/8(a), which pay the two-thirds wage differential described above. When your physician releases you to full duty, wage replacement benefits generally end, though medical treatment may continue.
The IWCC Handbook makes clear that these transitions are not automatic, they require communication between the treating physician, the employer, and the insurance carrier. Gaps in communication are a common source of benefit interruptions, and workers who are not closely monitoring their claim can find their benefits cut off prematurely or a light duty offer treated as a full-duty clearance when it is not.
What Counts as a Reasonable Light Duty Offer
Physical restrictions are not the only factor that determines whether a light duty offer is one you must accept. Location and logistics matter too. An offer requiring a commute far longer than your normal one, or a shift schedule that conflicts with ongoing medical appointments your physician has ordered, raises real questions about reasonableness even if the physical tasks themselves fall within your written restrictions. There is no bright-line rule for exactly how far is too far, which is precisely why these situations benefit from an attorney’s review rather than a worker guessing at the answer alone. Document the specifics of any offer, job duties, hours, location, and start date, in writing before deciding how to respond.
If There Is No Light Duty Work Available
Some construction employers, especially smaller subcontractors, genuinely have no modified positions to offer. If your employer cannot identify work that falls within your restrictions, you generally remain on TTD benefits at the full rate rather than being pushed into an unsuitable role or being told your benefits will simply stop. An employer’s statement that “we don’t have light duty” is not, on its own, a reason for your wage benefits to end; if it happens, that is a signal to contact an attorney promptly rather than assume the interruption is correct.
Retaliation Concerns
Illinois law prohibits an employer from retaliating against a worker for exercising rights under the Workers’ Compensation Act, including declining a light duty offer that genuinely exceeds written medical restrictions under 820 ILCS 305/4(h). Some workers worry that pushing back on an unsuitable light duty offer will lead to termination or reduced hours in retaliation. If that happens, it raises separate legal issues beyond the light duty dispute itself. For more on how Illinois protects workers from that kind of retaliation, see our article on being fired while on workers’ comp in Illinois.
Protecting Your Rights on a Construction Site
Construction worksites present unique challenges for light duty assignments. The physical environment of a construction project, uneven surfaces, heavy equipment, confined spaces, heights, often makes genuine light duty difficult or impossible to provide safely. Some employers respond by offering light duty at a different location or in an administrative role. Others may pressure injured workers to perform tasks beyond their restrictions because the site simply does not have suitable modified work.
If your employer cannot offer work that genuinely falls within your written restrictions, you should remain on TTD benefits rather than return to a position that could reinjure you. Document any pressure to exceed your restrictions and have your attorney review any offer letter before you accept or decline.
When Light Duty Never Materializes: Vocational Rehabilitation
Sometimes a worker’s restrictions turn out to be permanent, or close to it, and no light duty position within those restrictions exists anywhere in the employer’s operation, whether on a construction site or otherwise. In that scenario, Illinois workers’ compensation law provides for vocational rehabilitation services and, where appropriate, maintenance benefits while the worker participates in a vocational program aimed at returning to suitable employment elsewhere. This is a different track from ordinary light duty, and it typically comes into play only after it becomes clear that a return to the pre-injury job, or anything close to it with the current employer, is not realistic. If your case reaches this point, an attorney experienced in construction injury claims can help evaluate whether vocational rehabilitation is appropriate and how it interacts with any ongoing TPD or TTD benefits you are receiving.
Multi-Employer Construction Sites and Light Duty
On a general contractor’s project, the entity offering you a light duty position is usually your direct employer, whether that is the general contractor itself or a subcontractor, not every company working on the site. This matters because a subcontractor with only a handful of employees may genuinely lack any light duty role, while the general contractor overseeing the project might have administrative or lower-demand positions available. Some workers assume light duty must come from their specific subcontractor employer alone; in practice, whether a related entity’s available work can or should factor into the analysis is a fact-specific question worth raising with an attorney rather than assuming either way.
A Hypothetical Illustration
Consider a hypothetical case: a concrete finisher tears a rotator cuff and is released to light duty with a strict no-lifting-over-five-pounds restriction. The general contractor offers a “light duty” role that turns out to involve moving small equipment cases weighing up to fifteen pounds. The worker reports the mismatch to both the site supervisor and the treating physician, who confirms in writing that the offer exceeds the restriction. The worker declines the specific task while remaining willing to perform genuinely compliant work, and TTD benefits continue while the employer looks for a suitable alternative. This example is illustrative only and does not represent an actual case result; every dispute over whether an offer matches written restrictions depends on the specific medical documentation and job description involved.
Common Mistakes Workers Make With Light Duty Offers
A few recurring mistakes cost workers money in this area. Some accept a light duty position without confirming the pay rate in writing beforehand, then discover it pays less than expected and have no clean paper trail to establish the TPD wage differential. Others assume the employer or insurer will automatically calculate and pay TPD correctly without any prompting, when in practice these payments are sometimes missed, delayed, or calculated using an incomplete average weekly wage. Still others return to what they believe is light duty without getting the physician’s restrictions updated in writing first, leaving no clear record if the assignment turns out to exceed what they can safely do. Keeping your own copy of every restriction letter and every offer letter, and comparing them side by side, avoids most of these problems.
Keeping Your Own Paper Trail
Because so much of a light duty dispute turns on comparing two documents, your physician’s restrictions and your employer’s job offer, keeping organized copies of both is worth more than any other single step you can take on your own. Request a copy of every restriction letter directly from your physician’s office rather than relying on the employer to forward it accurately. Ask for any light duty offer in writing, including the specific tasks, hours, and pay rate, even if it is first communicated by phone. If your pay stub for a light duty week does not match what you were told verbally, flag the discrepancy immediately rather than assuming it will be corrected automatically on a later check. Workers who keep this kind of running file tend to resolve TPD disputes faster and with less friction than those who try to reconstruct the timeline from memory months later.
Frequently Asked Questions
Does my employer have to create a light duty position if one does not already exist?
Illinois law does not require an employer to invent a new position. If no suitable modified work exists, you generally remain on TTD rather than being required to perform work beyond your restrictions.
Can my employer send me to their own doctor to get different restrictions?
An insurer can request an independent medical examination, but that does not automatically override your treating physician’s restrictions. If there is a genuine dispute between examining physicians, that dispute needs to be resolved through the claims process, not simply by the employer picking whichever opinion it prefers.
What if the light duty pay is the same as my regular pay but the hours are fewer?
TPD is based on the wage differential, not just the hourly rate, so fewer hours at the same rate can still create a gap eligible for TPD. Confirm the actual weekly earnings comparison rather than just the hourly wage.
How long can I stay on light duty and TPD?
TPD generally continues until you reach maximum medical improvement, at which point your physician either releases you to full duty or determines you have a permanent impairment, which shifts the analysis to permanent disability benefits.
Do I need a lawyer just to accept a light duty offer that seems fine?
Not necessarily, but it is worth having an attorney review the offer letter and confirm the TPD calculation is correct, particularly if your pre-injury pay included overtime, bonuses, or multiple job sites.
What should I do if my restrictions change while I am already on light duty?
Notify your employer in writing as soon as your physician issues updated restrictions, and keep a copy of the updated document. The light duty assignment should be re-evaluated against the new restrictions, not left as-is.
Talk to a Chicago Attorney, Free Consultation
If you or a family member has been affected, the attorneys at Phillips Law Offices are here to help. Call (312) 346-4262 or contact us online for a free, no-obligation consultation.
Attorney Advertising. This page provides general information about Illinois law and is not legal advice. Reading it does not create an attorney-client relationship. Deadlines and outcomes depend on the specific facts of your case — speak to a licensed Illinois attorney about your situation.