Cross-Examining an Economist: Challenging the Numbers Behind a Damages Opinion

The best cross-examination of an economist is not a debate over every number in the damages spreadsheet. It is a disciplined attack on the assumptions that make the number look larger, smaller, safer, or more certain than the evidence supports. In a Utah personal injury case, that means using short leading questions, one fact at a time, arranged in chapters that move the jury toward a clear factual goal. When the cross is built that way, the economist’s final number starts to look less like math and more like advocacy dressed in math.

For an injured person, the economist’s opinion can shape how an insurance company, mediator, judge, or jury views the value of lost wages, future earning capacity, household services, and long-term financial harm. Utah’s model civil jury instructions separate tort damages into economic and noneconomic categories and include instructions addressing medical expenses, lost earnings, loss of household services, present cash value, life expectancy, collateral source payments, and related damages concepts. The point is practical: economic damages require evidence, foundation, and a defensible method. The lawyer’s job is to show when the opposing economist’s method hides choices that should be tested, not accepted as neutral arithmetic.

Economic Damages Are Only as Strong as the Assumptions Behind Them

Economists do not create damages out of thin air. They usually start with the case record, select assumptions, choose data sources, and apply a formula. Utah Rule of Civil Procedure 26 requires a damages computation and the discoverable documents or evidentiary material on which the computation is based, including materials about the nature and extent of injuries. That rule matters because a damages opinion should connect to the same evidence the jury will eventually use to decide whether the claimed loss is real.

A strong cross starts by separating the inputs from the conclusion. The economist may have calculated future lost earning capacity, but someone else may have supplied the medical restriction. The economist may have used a wage-growth rate, but the plaintiff’s actual work history may point in a different direction. The economist may have discounted future losses to present value, but the discount-rate selection may drive the result more than any fact about the injured person.

What an Economist Usually Builds Into the Number

A damages economist may consider past income, likely future income, fringe benefits, work-life expectancy, life expectancy, wage growth, taxes, inflation, discount rates, and replacement services. Public data sources can include the Bureau of Labor Statistics Occupational Employment and Wage Statistics program, BLS labor-force data from the Current Population Survey, and Social Security life tables. Those sources can be useful, but they are not a substitute for a case-specific foundation. A clean cross tests whether the economist used the right data source for the right person at the right time.

Those choices are not neutral just because they appear in a spreadsheet. A different starting wage, retirement age, growth rate, fringe-benefit assumption, or disability duration can move the opinion by tens or hundreds of thousands of dollars. In serious injury and wrongful death cases, small inputs can create large lifetime differences. The cross should teach the jury which inputs matter most before asking the witness to defend the final number.

The Cross Begins Before the Deposition

The economist cross begins with a source map, not a question list. The lawyer should identify every report, spreadsheet, assumption letter, medical record, vocational opinion, tax return, W-2, 1099, paystub, benefits statement, personnel file, and public data table the economist used. The lawyer should also identify what the economist did not use. Missing records are often more important than the records listed in the expert file.

The next step is to build an assumption chart that separates facts, borrowed opinions, data choices, and lawyer-supplied instructions. A medical restriction is different from an economist’s calculation. A vocational opinion is different from a wage table. A settlement posture is different from proof. Once those categories are separated, the cross can expose which parts of the opinion are economics and which parts are assumptions borrowed from someone else.

The Three Rules for Cross-Examining an Economist

A strong chapter uses leading questions only. The lawyer supplies the fact and asks the economist to confirm or deny it. Each question adds one new fact, which prevents the witness from escaping through a compound answer. The chapter then moves from safe, general admissions toward the specific point the jury needs to understand.

The chapter goal should be narrow enough that the jury can see it without a closing argument. The goal is not “the economist is wrong” because that is too broad and too argumentative. A better goal is “the economist assumed a permanent restriction without making an independent medical judgment.” Another strong goal is “the economist’s wage baseline excludes the plaintiff’s documented promotion track.”

Chapter One: The Economist Relied on a Medical Assumption Without Making a Medical Judgment

Many economist opinions rise or fall on medical restrictions. That is fair when the restriction is supported, but it becomes vulnerable when the economist treats a disputed medical assumption as a settled fact. The chapter can begin with simple propositions: “You are not a medical doctor.” It can then move one fact at a time: “You did not examine the patient,” “You did not order imaging,” “You did not assign the work restrictions,” and “Your loss calculation depends on the restriction being accepted.”

This chapter should not ask the economist to concede the plaintiff’s injury is real or fake. That invites speeches and legal argument. The goal is smaller and cleaner. The jury should understand that the economist’s number is conditional on medical testimony the economist is not qualified to supply.

Chapter Two: The Wage Baseline Does Not Match the Actual Work History

A lost-earning opinion usually begins with a wage baseline. A defense economist may choose a low historical average that includes school years, layoffs, temporary work, early career wages, or a pandemic interruption. A plaintiff economist may choose a higher baseline if the evidence supports a rising career path, promotion history, union step increase, degree completion, or documented job offer. The cross should isolate the years used, the years excluded, and the reason each choice changed the final number.

A tight wage-baseline chapter sounds factual, not argumentative. The questions might proceed this way: “You used a five-year earnings average,” “That average includes the year before the plaintiff completed the certification,” “The certification increased the plaintiff’s hourly rate,” and “Your baseline does not isolate the post-certification wage.” Each question proves one point. The chapter goal is that the economist’s starting wage blended unlike years together.

Chapter Three: Work-Life Expectancy Is a Prediction, Not a Biography

Work-life expectancy can be useful, but it is not a biography of the injured person. National labor-force patterns may not capture a particular plaintiff’s trade, family business, professional license, immigration history, disability accommodation, overtime pattern, or plan to work beyond a typical retirement age. Social Security life tables and BLS labor-force data can inform the analysis, but the case-specific record must still carry the opinion. A strong cross asks whether the expert considered the person in the file, not just the person in the table.

The chapter goal should be precise. In a defense cross, the goal might be that the plaintiff economist assumed uninterrupted full-time work despite documented gaps. In a plaintiff cross, the goal might be that the defense economist cut off earning capacity even though the plaintiff had a stable trade and no retirement plan. Either way, the cross should show whether the work-life assumption fits the human being whose losses are being measured.

Chapter Four: Discount Rate and Growth Rate Choices Can Drive the Opinion

Future losses are often reduced to present value. That calculation may sound technical, but it depends on human choices about discount rates, wage growth, inflation, fringe benefits, and risk. In some cases, the difference between two experts is not the plaintiff’s injury or work history but the rate assumptions buried in the spreadsheet. The cross should make those rate choices visible.

The chapter can move from general to specific without asking the economist to lecture the jury. The lawyer can establish that the economist selected a discount rate, selected a wage-growth rate, and understood that changing either rate would change the final number. The lawyer can then tie the opinion to the actual spreadsheet: “When the discount rate increases, the present value decreases,” and “When the wage-growth rate decreases, the future loss decreases.” The goal is not to teach macroeconomics but to show that the final number is sensitive to assumptions the jury is allowed to evaluate.

Utah Expert Rules Make the Foundation Fair Game

Utah Rule of Evidence 702 allows qualified experts to testify when specialized knowledge will help the trier of fact, but the rule also requires a threshold showing that the principles or methods are reliable, based on sufficient facts or data, and reliably applied to the facts. The Utah rule’s advisory material emphasizes that the trial judge acts as a gatekeeper and should direct skepticism to the particular proposition the expert testimony is offered to support. For an economist, that means the “work at hand” is not economics in the abstract. It is the particular calculation offered in the particular injury case.

Utah Rules of Evidence 703 and 705 also matter in economist cross-examination. Rule 703 permits experts to rely on facts or data they have been made aware of or personally observed when experts in the field would reasonably rely on those kinds of facts or data. Rule 705 allows an expert to state an opinion and reasons without first laying out every underlying fact, but it also allows the expert to be required to disclose those facts or data on cross-examination. Those rules make the economist’s assumptions, data, and spreadsheet logic proper subjects for disciplined cross.

Utah Rule of Civil Procedure 26 gives the lawyer another practical tool. For retained experts, the disclosure must include qualifications, prior testimony information, a summary of expected opinions, case-specific facts and data relied on, and compensation. Further expert discovery may proceed by deposition or written report, and a report must contain a complete statement of the opinions and the basis and reasons for them. A cross-examination that tracks those disclosures can show whether the trial opinion stayed within the disclosed foundation.

Insurance Company Tactics in Economist Testimony

Insurance companies often present economist testimony as if it is the calm, objective antidote to an injured person’s story. The tactic is effective because numbers feel precise even when the assumptions are debatable. A defense economist may lower the loss by selecting a conservative wage baseline, shortening work-life expectancy, excluding overtime, undervaluing fringe benefits, discounting household services, or treating disputed medical limits as temporary. The cross should expose those choices without sounding like the lawyer is hostile to math.

The strongest response is to make the hidden choice visible. The jury does not need to hear a lecture about actuarial science to understand that excluding overtime changes the number. The jury does not need an economics degree to understand that using pre-promotion wages can understate the future. The lawyer’s task is to translate the spreadsheet into ordinary factual choices the jury can weigh.

Building the Plaintiff’s Record Before the Economist Takes the Stand

A good economist cross depends on a good factual record. In a plaintiff’s case, that record may include tax returns, W-2s, 1099s, paystubs, employer records, job descriptions, offer letters, union contracts, promotion histories, benefit statements, retirement contributions, business records, school records, licensing records, and testimony from supervisors or coworkers. Medical restrictions and vocational opinions should connect the injury to actual work limits. Household-services claims should be tied to what the injured person actually did before the injury and what the family now pays for, goes without, or shifts to someone else.

This evidence matters before trial because it changes settlement pressure. An insurer can dismiss a vague future-loss claim as speculative. It is harder to dismiss a claim supported by employment documents, physician restrictions, vocational analysis, and a transparent economic model. The earlier those materials are organized, the harder it becomes for the defense to define the case by the smallest number in the room.

How a Chapter-Method Cross Helps Settlement and Trial

A chapter-method cross helps before the economist ever reaches the witness stand. It shows the mediator and the insurer that the damages opinion has been pressure-tested. It also shows that the trial lawyer knows where the number is vulnerable and where it is strong. That preparation can make the difference between a claim being treated as a spreadsheet dispute and being treated as a serious human loss with financial consequences.

The same method protects the plaintiff’s credibility. If the plaintiff’s economist overreaches, a disciplined review should catch the problem before trial. If the defense economist understates the loss, a disciplined cross should show exactly how. The objective is not to inflate or deflate damages but to make the number answerable to evidence.

Talk to a Utah Personal Injury Lawyer About Damages Before the Number Gets Framed for You

In a serious Utah injury case, damages are not just medical bills and a quick wage calculation. The economic story may include lost earning capacity, future care, reduced work options, household services, fringe benefits, and years of changed financial security. Insurance companies understand that the first credible number often anchors the negotiation. That is why the plaintiff’s damages record should be built carefully before statements, authorizations, early settlement offers, or release language narrow the case.

Call The Legal Beagle at (801) 915-6152 or contact the firm at https://www.mylegalbeagle.com/contact. Gabriel K. White handles Utah personal injury cases with a plaintiff-side focus on serious injuries, disputed damages, and trial-ready claim development. The firm’s role is to identify what the injury has actually cost, preserve the evidence needed to prove it, and challenge defense opinions that make unsupported assumptions look like objective math. When the numbers matter, the cross-examination should be built before the economist ever takes the stand.