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The Implications of Pre-Existing Conditions on Workers’ Compensation Claims in Illinois

by | Jul 19, 2023 | Work-Related Injuries, Workers' Compensation, Workplace Accidents, Workplace Injuries |


In the realm of workers’ compensation, one area that often generates confusion and contention involves pre-existing conditions. How do these conditions impact a workers’ compensation claim in Illinois? Is a worker still entitled to benefits if they have a pre-existing condition that is aggravated or exacerbated by their job? In this blog post, we’ll dive deep into these questions and more.

What is a Pre-Existing Condition?

A pre-existing condition is any health issue an individual had before a workplace injury. This could range from chronic conditions like arthritis, back issues, or heart disease, to prior injuries such as a broken arm that healed years ago. If an employee has any such conditions when they sustain a work-related injury, they’re considered to have a pre-existing condition.

The Impact of Pre-Existing Conditions on Workers’ Compensation Claims

In Illinois, as in most states, workers’ compensation is a no-fault system. This means that employees are generally entitled to benefits for work-related injuries, regardless of who is at fault. But where do pre-existing conditions fit into this landscape?

The Illinois Workers’ Compensation Act doesn’t disqualify an employee from receiving benefits simply because they have a pre-existing condition. However, the key question is whether the workplace accident or exposure aggravated, accelerated, or exacerbated the pre-existing condition. If the work-related event made the pre-existing condition worse in a significant or perceptible manner, the employee could be entitled to benefits.

Proving the Work-Relatedness of Your Condition

To be eligible for workers’ compensation benefits, an injured worker with a pre-existing condition must demonstrate that their work duties significantly contributed to the deterioration of their health or the aggravation of the pre-existing condition. This could involve presenting medical records, physician testimony, and sometimes, the opinion of an independent medical examiner.

The Role of Legal Counsel

Proving that a workplace event exacerbated a pre-existing condition can be complex, requiring medical evidence and potentially facing contestation from employers and insurance companies. This is where the importance of legal counsel comes into play.

An experienced workers’ compensation attorney can help collect and present the necessary evidence, advocate on your behalf, and navigate the legal complexities surrounding pre-existing conditions in workers’ compensation cases. It’s crucial to discuss your case with a lawyer who understands the intricacies of Illinois workers’ compensation law to protect your rights and ensure you receive the benefits you’re entitled to.


In conclusion, while a pre-existing condition doesn’t automatically disqualify an Illinois worker from receiving workers’ compensation benefits, it can complicate the claims process. Having an experienced workers’ compensation attorney to provide guidance and representation can be a critical factor in successfully navigating these complexities. If you’re dealing with a work-related injury and a pre-existing condition, don’t hesitate to seek professional legal help.

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