Lost Earnings and Earning Capacity Analysis for Workers' Compensation Cases in Illinois

By KW Economics Editorial Team · Updated

KW Economics prepares lost earnings analysis for workers' compensation 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 Workers' Compensation in Illinois

Workers' compensation matters ask the lost earnings question in more than one setting: the wage loss or reduced earning capacity that the benefit is meant to replace, the present value of future indemnity payments at issue in a settlement, and the full earnings loss in a third-party action arising from the same injury. The economist assembles the pre-injury wage base from the employer's records and tax documents, establishes the post-injury earnings path from actual earnings or the work-capacity opinions, and measures the loss over the applicable worklife with wage growth. The report separates what the compensation system pays from what a civil claim adds so the same facts support both.

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

In a settlement, the present value of a long stream of indemnity payments is the central figure, and the discount rate and the claimant's life or worklife expectancy control it. In a third-party action the exposure resembles any personal injury claim, with the added task of identifying the benefits already paid so the lien and offset questions counsel raises can be answered from the same numbers. Where the benefit turns on earning capacity, the gap between pre-injury wages and what the person can now earn is the contested figure, and the post-injury wage level is the assumption that moves it.

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.

Compensation forum: Illinois Workers' Compensation Commission. Third-party actions arising from the same injury proceed in the civil courts listed above, and the report separates what the compensation system pays from what the civil claim adds.

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 Workers' Compensation in other states

Frequently asked: Lost earnings analysis in Illinois workers' compensation matters

How is lost earnings analysis built for a workers' compensation case in Illinois?

The same four steps apply to a workers' compensation case venued in Illinois; the damages framework above decides which components enter the total. Assemble the pre-injury wage base from the employer's records and tax documents. Establish the post-injury earnings path from actual earnings or the work-capacity opinions, and measure the loss over the applicable worklife with wage growth. Value future indemnity streams with stated mortality and discount assumptions, and grow and discount future medical by category when a treatment projection exists. Separate the amounts the compensation system pays from the components a third-party claim adds, and reconcile the two so the same facts support both.

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. Workers' Compensation claims in Illinois proceed before the Illinois Workers' Compensation Commission, and third-party actions arising from the same injury 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 workers' compensation 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.