KW Economics prepares lost earnings analysis for traumatic brain injury cases venued in South Dakota: what the loss claim consists of, the records that drive it, and a present value built to South Dakota damages rules and venues. Plaintiff and defense.
Brain injury claims often present a large lost earnings figure because cognitive and behavioral effects can end a career even when physical function returns, and a young claimant's worklife is long. The economist builds the but-for path from the earnings history or, for a young person, from occupational data for the path they were on, and compares it with a post-injury path that may be no competitive work, work only with supports, or work at a lower level. The neuropsychological and work-capacity opinions in the record define that path; the report shows the loss under each opinion when they differ and states how the total moves with residual capacity.
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.
Two components usually dominate: future lost earnings across a long worklife for a young person, and the present value of attendant care and supervision when the plan calls for daily hours of paid help. Because the level of supervision and the person's residual work capacity are both matters of expert opinion, the report's total is highly sensitive to those inputs, and the life expectancy used for the care stream is a second source of dispute. Mild injury with persistent symptoms presents a narrower claim built on reduced hours, lost advancement, and periodic treatment.
South Dakota courts screen expert testimony for reliability: the trial judge asks whether the economist is qualified, whether the opinion rests on sufficient facts and reliable principles and methods, and whether those methods were reliably applied to the case. A damages report is written to that standard, with each data series named and each assumption tied to the record.
Highest court: South Dakota Supreme Court. Court system: ujs.sd.gov.
Federal venues: District of South Dakota.
Outside the civil courts, wage-loss disputes in workers' compensation matters proceed before the South Dakota Department of Labor and Regulation, Division of Labor and Management.
South Dakota provides a wrongful death action for the pecuniary injury to the surviving spouse, children, or next of kin, which the courts read to include loss of companionship and society, alongside a survival action for the estate. The state's unusual comparative negligence rule allows recovery only when the plaintiff's negligence was slight in comparison with the defendant's, the common-law collateral source rule applies, and prejudgment interest is allowed on past damages but not on future damages, punitive damages, or intangible losses.
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.
Brain injury claims often present a large lost earnings figure because cognitive and behavioral effects can end a career even when physical function returns, and a young claimant's worklife is long. The economist builds the but-for path from the earnings history or, for a young person, from occupational data for the path they were on, and compares it with a post-injury path that may be no competitive work, work only with supports, or work at a lower level. The neuropsychological and work-capacity opinions in the record define that path; the report shows the loss under each opinion when they differ and states how the total moves with residual capacity.
South Dakota courts screen expert testimony for reliability: the trial judge asks whether the economist is qualified, whether the opinion rests on sufficient facts and reliable principles and methods, and whether those methods were reliably applied to the case. A damages report is written to that standard, with each data series named and each assumption tied to the record. Traumatic Brain Injury cases venued in South Dakota are heard in the Circuit Court (General jurisdiction; 7 circuits across 66 counties; all civil, criminal, and domestic matters), with final appeals to the South Dakota Supreme Court. Matters within federal jurisdiction proceed in the District of South Dakota.
South Dakota provides a wrongful death action for the pecuniary injury to the surviving spouse, children, or next of kin, which the courts read to include loss of companionship and society, alongside a survival action for the estate. The state's unusual comparative negligence rule allows recovery only when the plaintiff's negligence was slight in comparison with the defendant's, the common-law collateral source rule applies, and prejudgment interest is allowed on past damages but not on future damages, punitive damages, or intangible losses. 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 South Dakota rules to a documented figure.
Request a consultation on Lost Earnings or call (201) 343-0700. Plaintiff and defense counsel.