Lost Earnings and Earning Capacity Analysis for Product Liability Cases in California

By KW Economics Editorial Team · Updated

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

How Lost Earnings and Earning Capacity Analysis applies to Product Liability in California

Product liability claims often involve an injured person whose exposure to the product bears no relation to their occupation, so the lost earnings analysis is built from that person's own path rather than from the circumstances of the injury. The economist establishes the but-for earnings base from the earnings history or, for a child, student, or homemaker, from the educational path and occupational earnings data, projects it over the applicable worklife with growth, and sets against it the post-injury path the work-capacity opinions support. In a mass tort setting the same documented method is applied to each claimant's own records so results are consistent in method and individual in result.

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

The exposure tracks the injury: burns, amputations, and neurological injuries produce large future earnings and care losses; less severe injuries produce a bounded past loss and limited future treatment. Because product cases often involve children, homemakers, and retirees, the household services and care components frequently outweigh the earnings loss, and the analysis must be built from those components rather than from wage records that do not exist. For fatal injuries the exposure follows the wrongful death structure with the personal consumption deduction as the key assumption.

California courts and expert standards

California courts ask whether the reasoning and data behind an expert opinion are sound and whether the opinion rests on matter of a type experts reasonably rely on, reserving a general-acceptance test for novel scientific techniques; the witness is qualified by training and experience. Economic damages testimony is therefore examined on its inputs and logic: whether the worklife, growth, and discount assumptions have a published basis and whether they fit the record.

Where these cases are heard

Highest court: Supreme Court of California. Court system: courts.ca.gov.

Federal venues: Northern District of California, Eastern District of California, Central District of California, Southern District of California.

Outside the civil courts, wage-loss disputes in workers' compensation matters proceed before the California Division of Workers' Compensation.

Damages framework

California pairs a wrongful death action for the heirs' economic and companionship losses with a survival action for the estate's own claims, and past medical expenses are measured by the amounts actually paid or owed rather than by the amounts billed. Pure comparative fault reduces the award in proportion, the collateral source rule applies outside medical malpractice, and prejudgment interest in injury cases turns on the statutory offer-to-compromise procedure rather than accruing as of right.

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 Product Liability in other states

Frequently asked: Lost earnings analysis in California product liability matters

How is lost earnings analysis built for a product liability case in California?

The same four steps apply to a product liability case venued in California; the damages framework above decides which components enter the total. Establish the but-for path from the earnings history or, for a child, student, or homemaker, from the educational path, occupational data, or the household work performed. Draw the post-injury path from actual earnings and the work-capacity opinions, and project both paths over the applicable worklife or life expectancy with growth. Value household services from time-use data and local rates, and price future care from the life care plan with category-specific cost growth. Discount every stream to present value at a stated rate and, where there are multiple claimants, apply one documented methodology to each record.

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

California courts ask whether the reasoning and data behind an expert opinion are sound and whether the opinion rests on matter of a type experts reasonably rely on, reserving a general-acceptance test for novel scientific techniques; the witness is qualified by training and experience. Economic damages testimony is therefore examined on its inputs and logic: whether the worklife, growth, and discount assumptions have a published basis and whether they fit the record. Product Liability cases venued in California are heard in the Superior Court (Unified general jurisdiction trial court in each of 58 counties; handles all civil and criminal matters), with final appeals to the Supreme Court of California. Matters within federal jurisdiction proceed in the Northern District of California, Eastern District of California, Central District of California, and Southern District of California.

How does the California damages framework shape lost earnings analysis in a product liability case?

California pairs a wrongful death action for the heirs' economic and companionship losses with a survival action for the estate's own claims, and past medical expenses are measured by the amounts actually paid or owed rather than by the amounts billed. Pure comparative fault reduces the award in proportion, the collateral source rule applies outside medical malpractice, and prejudgment interest in injury cases turns on the statutory offer-to-compromise procedure rather than accruing as of right. 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 California rules to a documented figure.

References

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