Lost Earnings and Earning Capacity Analysis for Personal Injury Cases in Illinois

By KW Economics Editorial Team · Updated

KW Economics prepares lost earnings analysis for personal injury cases venued in Illinois: what the loss claim consists of, the records that drive it, and a present value built to Illinois damages rules and venues. Plaintiff and defense.

How Lost Earnings and Earning Capacity Analysis applies to Personal Injury in Illinois

In a personal injury matter the lost earnings analysis is the core of the economic claim and often its largest component. The economist establishes the but-for earnings base from tax returns, wage statements, and personnel records, projects it over a worklife expectancy with wage growth, and compares it with the post-injury path drawn from actual earnings and the work-capacity opinions in the record. A short absence with a full return to the same job leaves a past loss that can be built from pay records; a permanent restriction that ends the prior occupation opens a future gap that runs across the remaining worklife and is discounted to present value with the rate stated.

Past and future lost earnings and fringe benefits for a person whose injury has removed them from work or reduced what they can earn. The analysis builds from the earnings history, projects the but-for path over the person's expected worklife with wage growth, and discounts the future stream to present value. When the person can still work in a reduced capacity, the loss is framed as diminished earning capacity, with the post-injury path drawn from a vocational opinion or the treating record and offset against the but-for projection.

Where the damages concentrate

Which component dominates depends on the person's age, occupation, and residual capacity. For a young worker who can no longer perform a skilled trade, future earnings loss over a long worklife usually outweighs everything else. For a person who returns to work at reduced hours or lower pay, the loss is the gap between the but-for path and the post-injury path, and the size of that gap is the contested question. Where a life care plan exists, its present value is often the largest single figure in the report, and household services losses can be substantial when the injured person did most of the home's unpaid work.

Illinois courts and expert standards

Illinois courts ask whether the methodology behind an expert opinion is generally accepted in the relevant professional community, and separately whether the economist is qualified by training and experience and applied the method to the facts of the case. Forensic economic methods for lost earnings, worklife, and present value are published and long used, so the examination usually turns on the inputs and their support in the record.

Where these cases are heard

Highest court: Illinois Supreme Court. Court system: illinoiscourts.gov.

Federal venues: Northern District of Illinois, Central District of Illinois, Southern District of Illinois.

Outside the civil courts, wage-loss disputes in workers' compensation matters proceed before the Illinois Workers' Compensation Commission.

Damages framework

Illinois pairs a wrongful death action for the pecuniary injuries to the spouse and next of kin, which now include grief and loss of society, with a survival action for the decedent's own claims, including earnings lost between injury and death. Recovery is barred once the plaintiff's fault exceeds half, the common-law collateral source rule applies with a post-verdict reduction procedure in medical malpractice cases, and prejudgment interest on personal injury and wrongful death awards now runs from the filing of the action.

Typical deliverables

We issue the final report in disclosure-ready form and provide deposition and trial testimony, rebuttal of opposing economic opinions, and updated calculations as new records arrive.

Lost Earnings for Personal Injury in other states

Frequently asked: Lost earnings analysis in Illinois personal injury matters

How is lost earnings analysis built for a personal injury case in Illinois?

The same four steps apply to a personal injury case venued in Illinois; the damages framework above decides which components enter the total. Establish the but-for earnings and fringe benefit base from the tax, wage, benefit, and personnel records, or from occupational data for a career still in training. Project the base over a statistically expected worklife with a stated wage growth rate and compare it with the post-injury path the record supports. Value household services from time-use data and local replacement rates, and price the future care in the life care plan item by item with medical cost growth. Discount every future stream to present value at a stated rate and show the sensitivity of the total to the contested assumptions.

What do Illinois courts ask of lost earnings analysis before it reaches the fact finder?

Illinois courts ask whether the methodology behind an expert opinion is generally accepted in the relevant professional community, and separately whether the economist is qualified by training and experience and applied the method to the facts of the case. Forensic economic methods for lost earnings, worklife, and present value are published and long used, so the examination usually turns on the inputs and their support in the record. Personal Injury cases venued in Illinois are heard in the Circuit Court (General jurisdiction; 25 judicial circuits across the state, including the Circuit Court of Cook County), with final appeals to the Illinois Supreme Court. Matters within federal jurisdiction proceed in the Northern District of Illinois, Central District of Illinois, and Southern District of Illinois.

How does the Illinois damages framework shape lost earnings analysis in a personal injury case?

Illinois pairs a wrongful death action for the pecuniary injuries to the spouse and next of kin, which now include grief and loss of society, with a survival action for the decedent's own claims, including earnings lost between injury and death. Recovery is barred once the plaintiff's fault exceeds half, the common-law collateral source rule applies with a post-verdict reduction procedure in medical malpractice cases, and prejudgment interest on personal injury and wrongful death awards now runs from the filing of the action. The report presents past and future amounts separately, states every rate and table with its source, and shows the result under the alternatives the other side is likely to argue, so counsel can apply the Illinois rules to a documented figure.

References

Request a consultation on Lost Earnings or call (201) 343-0700. Plaintiff and defense counsel.