Economic Damages Experts in Personal Injury and Wrongful Death: How Lost Earnings and Life-Care Damages Are Built and Attacked

By John Mahoney · June 2026 · 9 min read

In a serious injury or wrongful-death case, liability often gets the attention while the number that actually moves the settlement — the economic loss — is built quietly by a forensic economist working from documents. The forensic economist does not decide whether the defendant was negligent. Their job is narrower and, in a large case, decisive: take the plaintiff's pre-injury earning trajectory, the medical and functional consequences of the injury, and a set of economic assumptions, and translate all of it into a present-day dollar figure a jury can adopt. When the case has lasting impairment, two other experts usually feed that calculation: a vocational expert who opines on what the plaintiff can still earn, and a life-care planner who prices the future medical and attendant care the injury will require. The damages opinion is only as good as the record those three experts stand on.

This guide walks through what each of these experts actually does, the document and data record they rely on, the methodology that turns a pay stub into a present-value damages figure, and the predictable places the opinion gets attacked — for plaintiff and defense counsel triaging the economic side of a personal-injury or wrongful-death file.

Disclaimer: This article is for informational purposes only and does not constitute legal or financial advice. Damages methodology, admissible categories, the treatment of collateral sources, and the discount-rate approach vary by jurisdiction and by the facts. Always verify the controlling law and the underlying financial and employment record before relying on any generalization.

The Three Experts and What Each One Decides

Economic damages in an impairment or death case are usually a team product. Each expert answers a different question, and the boundaries matter because an opinion that strays outside its lane is the first thing the other side moves to exclude.

• The forensic economist quantifies the dollar loss: past and future lost earnings or lost earning capacity, the value of lost fringe benefits, lost household and family services, and, in a death case, the economic support and services the decedent would have provided. The economist applies growth rates, a discount rate, and a worklife horizon, and reduces future losses to present value.
• The vocational expert answers what the plaintiff could earn before the injury and what they can realistically earn after — the post-injury earning capacity that becomes a key input to the economist's loss figure. They assess transferable skills, labor-market availability, education, and the functional restrictions the treating or examining physicians have documented.
• The life-care planner prices the future, prepared an itemized plan of the medical care, therapy, equipment, medication, attendant care, and home or vehicle modifications the injury will require over the plaintiff's lifetime — with frequencies, durations, and unit costs the economist then inflates and discounts.

The opinions interlock: the physician's restrictions drive the vocational opinion, the vocational opinion drives the lost-capacity figure, and the life-care plan drives the future-medical figure. A weakness anywhere upstream propagates into the economist's bottom line.

The Record the Opinion Is Built On

A credible economic opinion is a documentary exercise, not a projection pulled from the air. The strongest reports are the ones where every assumption traces to a source in the file. The record typically includes:

• Earnings history — tax returns, W-2s and 1099s, pay stubs, Social Security earnings statements, and employer payroll records. These establish the pre-injury baseline and reveal whether earnings were steady, rising, or volatile.
• Employment and HR records — the personnel file, job description, performance reviews, promotion history, and benefits enrollment. These ground both the earning trajectory and the value of fringe benefits (employer-paid health insurance, retirement contributions, paid leave).
• For the self-employed or business owner — business tax returns, profit-and-loss statements, and K-1s, which separate true labor earnings from a return on capital — a recurring point of contention.
• The vocational assessment — transferable-skills analysis, labor-market survey, and the functional capacity or physician restrictions it relies on.
• The life-care plan — the itemized future-care schedule with frequencies, durations, and cost sourcing.
• Government and actuarial reference data — Bureau of Labor Statistics wage and employment-cost data, published worklife-expectancy tables, life-expectancy tables, and historical wage-growth and interest-rate series used to set the growth and discount assumptions.

The discipline that separates a durable opinion from a vulnerable one is whether each figure can be tied back to a specific page of a specific document. An economist who says the plaintiff would have earned a given salary should be able to point to the tax returns and the employer record that support it — not to a round number that appeared without a source.

The Methodology: From Pay Stub to Present Value

The core calculation follows a recognizable sequence, and understanding it is what lets you find the soft joints.

Lost earnings vs. lost earning capacity

These are distinct theories. Lost earnings measure what the plaintiff actually would have earned on their established path — appropriate where there is a stable work history. Lost earning capacity measures the diminution in the plaintiff's ability to earn, which can apply even to someone with a thin or interrupted earnings record (a young person, a recent graduate, a parent re-entering the workforce). Capacity claims are more flexible and, for that reason, more contested — the base is an estimate of potential rather than a documented salary.

Building the loss

From the chosen base, the economist projects earnings across a worklife horizon, then layers in the components that complete the picture:

• Fringe benefits — the employer-paid value of health insurance, retirement, and paid time off, typically expressed as a percentage of wages drawn from employment-cost data.
• Household services — the replacement value of the cooking, childcare, home maintenance, and other unpaid work the injury prevents, valued at market replacement rates.
• Growth rate — the assumed annual increase in wages over the projection period.
• Discount rate — the rate used to reduce future dollars to present value, reflecting that a dollar received years from now is worth less than a dollar today.

The net effect of growth and discounting — sometimes expressed as a single net discount rate — is where reasonable economists diverge and where a small change in assumption produces a large change in the total. In a wrongful-death case the same machinery runs on the decedent's projected earnings, minus their own personal consumption, to yield the net economic support and services the survivors lost.

Worklife, life expectancy, and collateral source

The projection horizon is set by worklife-expectancy and life-expectancy tables, not by a guess about when the plaintiff would have retired. And whether benefits the plaintiff received from other sources — insurance, disability, employer payments — can offset the award is governed by the jurisdiction's collateral-source rule, which the economist must respect rather than assume.

Where the Opinion Gets Attacked

Both sides probe the same pressure points, because a damages opinion fails at predictable joints. The recurring lines of attack:

• A speculative base. The earning trajectory rests on a promotion that was never offered, a degree never completed, or self-employment income that reflects business profit rather than the plaintiff's own labor. If the base is not grounded in the documents, everything built on it is vulnerable.
• The wrong discount rate. An aggressive discount or growth assumption that inflates or deflates the present value without empirical support. Because the total is so sensitive to this input, it is among the first things cross-examination targets.
• Failure to account for mitigation. The defense argument that the plaintiff can work, retrained, or unreasonably declined available employment — reducing the post-injury earning capacity the economist assumed.
• Foundation gaps. A life-care item with no physician prescribing it, a frequency or duration that no treating record supports, or a cost figure that cites nothing. The plan must be tied to recommended care, not a wish list.
• Double counting and category overlap. Counting the same loss twice — for example, lost earnings and household services that overlap, or a benefit included as both a loss and a separate line.
• Worklife and consumption assumptions. A retirement horizon or, in a death case, a personal-consumption deduction that is unsupported or out of step with the published data.

The pattern is consistent: the opinion is rarely wrong in its arithmetic. It is attacked at its assumptions and its foundation — the places where a number entered the model without a documented source behind it.

Strong Signals vs. Weak Signals — for Both Sides

Both sides screen the same report for the same tells, and the factors that distinguish a defensible opinion from a fragile one are largely symmetrical.

What strengthens a damages opinion

• A documented, stable earning history with tax returns and pay stubs that support the base figure.
• Vocational and life-care opinions tied to specific physician restrictions and prescribed care, each traceable to the record.
• Growth and discount assumptions drawn from published data with the reasoning shown, not asserted.
• Clean separation of categories with no overlap, and explicit treatment of mitigation and consumption.

What weakens it

• A base built on a hypothetical career path with no documentary support.
• Life-care line items no treating provider recommended, or costs with no sourcing.
• An outlier discount or growth rate chosen without explanation.
• Ignored mitigation, double-counted losses, or a consumption deduction that does not fit the facts.

A disciplined review separates the well-grounded figure from the aspirational one before either side commits to a number — the plaintiff avoiding an exclusion on a speculative capacity claim, the defense avoiding a wasted attack on a base that turns out to be fully documented.

Why Page-Cited, Verifiable Review of the Financial Record Matters

An economic damages file is a stack of documents: years of tax returns and pay stubs, an HR file, business statements, a vocational survey, and a life-care plan. The opinion lives or dies on whether each assumption can be traced to a page in that stack. That is precisely the kind of work where AI document review earns its place — surfacing the earnings figures, benefits, and restrictions across hundreds of pages — but only if every finding comes back with the exact source page attached. An economic figure with no citation is the same problem as a hallucinated one: you cannot defend it, and you cannot attack the other side's without finding the page yourself. Verifiable, page-cited review lets you confirm the base, test the foundation of every life-care item, and walk into a deposition knowing exactly which document supports — or undercuts — each number in the report.

Bottom Line

Economic damages in an injury or wrongful-death case are built by three interlocking experts — the forensic economist, the vocational expert, and the life-care planner — whose opinions are only as strong as the documentary record beneath them. The methodology is recognizable: choose lost earnings or lost earning capacity, layer in fringe benefits and household services, apply growth and discount rates, set the horizon with worklife and life-expectancy data, respect the collateral-source rule, and reduce to present value. And the attacks are recognizable too: a speculative base, the wrong discount rate, unaddressed mitigation, and foundation gaps where a number entered the model with no page behind it.

For both sides, the work is the same: confirm the base against the tax and employment records, tie every vocational restriction and life-care item to a treating source, scrutinize the growth and discount assumptions against published data, and run the mitigation and consumption questions hard. The merits of the damages claim should turn on the record — so verify every figure against the actual financial and employment documents before you rely on it.

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