What Is a Repetitive Trauma Injury?

A repetitive trauma injury — sometimes called a repetitive stress injury or cumulative trauma injury — develops gradually over time as a result of repeated physical activities at work. Unlike a sudden accident, these injuries build up through months or years of the same motions, postures, or physical demands.

Common examples include carpal tunnel syndrome from repeated keyboard use, rotator cuff injuries from repeated overhead lifting, back and neck conditions from years of heavy physical labor, and knee injuries from repeated kneeling or squatting. Just because there was no single traumatic event doesn’t mean you don’t have a valid workers’ compensation claim in Illinois.

“The absence of a specific accident date is the most common reason insurers deny repetitive trauma claims — but Illinois law is clear that these injuries are compensable.”

How Illinois Law Treats Repetitive Trauma

Illinois workers’ compensation law specifically covers repetitive trauma injuries. The key legal question is whether your work activities were a contributing cause of your condition — meaning your job doesn’t have to be the only cause, just a contributing one. This is an important distinction that gives many workers viable claims even if they have pre-existing conditions.

Because there is no single accident date, the “date of injury” for a repetitive trauma claim in Illinois is typically the date you knew — or reasonably should have known — that your condition was related to your work. This date matters significantly for filing deadlines and benefit calculations.

Common Repetitive Trauma Injuries Covered Under Illinois Work Comp

Carpal Tunnel Syndrome — Common among assembly workers, office workers, and anyone performing repeated hand and wrist motions.

Rotator Cuff Injuries — Frequently seen in workers who perform repeated overhead reaching, lifting, or pushing.

Back and Spine Conditions — Disc herniations and degenerative conditions that develop or worsen over years of heavy physical work.

Tendinitis and Bursitis — Inflammation in joints and tendons caused by repeated stress on specific body parts.

Knee Injuries — Cartilage damage and other knee conditions common in workers who kneel, squat, or climb repeatedly.

Why These Claims Are Frequently Disputed

Insurance companies routinely dispute repetitive trauma claims for several reasons. They often argue the condition is due to age, genetics, or activities outside of work. They may claim the injury predates your employment or that your job duties aren’t the cause. Having strong medical evidence that ties your condition to your specific work activities is essential to overcoming these defenses.

The medical evidence in a repetitive trauma case typically includes treatment records, imaging, physician opinions connecting the condition to your job duties, and sometimes a functional capacity evaluation. The more clearly your treating physician can describe how your work contributed to your condition, the stronger your claim.

What to Do If You Have a Repetitive Trauma Injury

Report your injury to your employer as soon as you connect your condition to your work — even if you’re not entirely certain. Illinois law requires notice within 45 days, and delays can be used against you. Seek medical treatment promptly and make sure your doctor understands the physical demands of your job so they can properly document the connection between your work and your injury.