Home >
Blog >
Loss of Earning Capacity in Illinois Personal Injury Cases

A 40-year-old electrician suffers a severe shoulder injury in a car crash. After surgery and months of physical therapy, he can return to some work, but he can no longer lift overhead, climb ladders, or perform the physical tasks his trade requires. He takes a desk job at lower pay. The difference between what he could have earned over the rest of his career and what he will actually earn is his loss of earning capacity, and it is one of the most significant damage categories in an Illinois personal injury case.

Earning Capacity vs. Lost Wages: The Distinction That Matters

Lost wages compensate you for income you have already missed because of your injury. That number is relatively straightforward: it is the pay you would have received during your recovery period, documented through pay stubs, tax returns, and employer records. Loss of earning capacity is different. It compensates you for the reduction in your ability to earn income in the future, even if you have returned to work.

The distinction matters because earning capacity is about what you are capable of earning, not necessarily what you were earning at the time of the injury. A college student with no income history can still have a significant earning capacity claim if an injury prevents them from entering their intended profession. A worker who was between jobs at the time of the crash still has an earning capacity based on their skills, education, experience, and the labor market. Illinois courts have consistently recognized that earning capacity is a measure of ability, not a snapshot of current employment.

How Illinois Courts Calculate Earning Capacity Losses

Proving loss of earning capacity typically requires expert testimony. The most common approach involves an economist or vocational rehabilitation expert who evaluates the plaintiff’s pre-injury earning trajectory, their post-injury limitations, and the difference between the two over the plaintiff’s expected remaining work life.

The analysis usually considers several factors: the plaintiff’s age, education, training, work history, and pre-injury earnings trend. It then accounts for the medical evidence about permanent restrictions, the types of jobs the plaintiff can still perform, the wages those jobs pay, and the expected duration of the impairment. The economist reduces the future loss to present value, which accounts for the fact that a lump sum received today can be invested. Illinois Pattern Jury Instruction 34.04 addresses the reduction to present value, and it is a standard component of any earning capacity presentation to a jury.

Medical Evidence Is the Foundation

An earning capacity claim is only as strong as the medical evidence supporting it. The treating physician or an independent medical examiner must establish the nature and extent of the plaintiff’s permanent physical or cognitive limitations. These restrictions define what work the plaintiff can and cannot do going forward. Without a clear medical opinion connecting the injury to specific functional limitations, the earning capacity claim lacks a foundation.

For example, if a surgeon testifies that the plaintiff has a permanent 30-pound lifting restriction and cannot stand for more than two hours at a time, a vocational expert can then analyze what jobs remain available given those constraints and what they pay. The gap between the plaintiff’s pre-injury earning trajectory and their post-injury options is the loss. As we explain in our personal injury practice overview, building a persuasive damages case requires connecting the medical evidence to real economic consequences.

Common Defense Arguments

Defendants regularly challenge earning capacity claims. They may argue that the plaintiff’s pre-injury earnings were unusually high and unsustainable, that the plaintiff has transferable skills that limit the actual loss, or that the plaintiff is capable of more work than they claim. Defense economists may use different assumptions about wage growth, work-life expectancy, or discount rates that produce a much lower figure.

Another common defense is that the plaintiff has failed to mitigate damages by not pursuing retraining or alternative employment. Under Illinois law, a plaintiff has a duty to take reasonable steps to minimize their losses, but the standard is reasonableness, not perfection. A defendant cannot demand that a 55-year-old construction worker go back to college for a four-year degree and call it mitigation. The question is whether the plaintiff has made reasonable efforts given their circumstances.

Self-Employed and Irregular Income Plaintiffs

Earning capacity claims can be more complex for self-employed individuals, gig workers, or people with irregular income histories. Tax returns may not fully reflect actual earnings if the plaintiff took business deductions that reduced their reported income. In these cases, the analysis may look at business revenue, industry benchmarks, and the plaintiff’s specific skills and client base to reconstruct a realistic picture of pre-injury earning power. The key is providing enough data for the economist to work with, even if the numbers are less clean than a W-2 employee’s records.

Injured? Get the Help You Deserve.

The attorneys at Parker & Parker offer free, no-obligation consultations. Call (309) 692-8900 or schedule online to discuss your case today.

Frequently Asked Questions

Do I need to be permanently disabled to claim loss of earning capacity?

No. You do not need to be totally disabled. Any permanent limitation that reduces your ability to earn income, even if you can still work in some capacity, can support an earning capacity claim. The claim is based on the difference between what you could have earned without the injury and what you can earn with it.

Can I claim loss of earning capacity if I was not working at the time of the accident?

Yes. Earning capacity is based on your ability to earn, not on whether you were employed on the date of the accident. Students, stay-at-home parents, and unemployed individuals can all have valid earning capacity claims if the injury prevents them from working or limits the type of work they can perform in the future.

How far into the future does a loss of earning capacity claim extend?

It depends on the plaintiff’s age, the nature of the injury, and their expected remaining work life. An economist will typically project the loss through the plaintiff’s expected retirement age, which may be 65, 67, or older depending on the circumstances. For a younger plaintiff with a permanent injury, the cumulative loss over decades of work can be very large.

Every personal injury case is unique. Our Peoria personal injury attorneys at Parker & Parker provide personalized legal strategies tailored to your situation.

Loss of Earning Capacity in Illinois Personal Injury Cases