Reliable Foundation Required for Expert Future Lost-Wage Projections; Narrow Admission of Stale Dishonesty Convictions Under D.R.E. 609(b) When Credibility Is Central

1. Introduction

This appeal arose from a motor vehicle collision in New Castle County. Willie L. Bowman (plaintiff/appellant) was driving on Philadelphia Pike when Roberto Duran-Madrigal (defendant/appellee), acting in the course of his employment with Evergreen Waste Services, LLC (defendant/appellee), entered from Clearview Avenue and failed to stop at a stop sign, causing a collision.

Bowman tried the case to a jury and obtained a $95,000 verdict. He appealed two evidentiary rulings that shaped the damages and credibility presentations at trial:

• Lost wages: the Superior Court granted a motion in limine excluding Bowman’s lost-wage claim and his economist’s testimony as too speculative.
• Impeachment: the Superior Court denied Bowman’s motion in limine and allowed limited impeachment under Delaware Rule of Evidence 609(b) using Bowman’s 2013 Pennsylvania convictions for forgery and theft by unlawful taking (crimes of dishonesty), despite the convictions being outside the ten-year window.

2. Summary of the Opinion

The Supreme Court affirmed. Applying abuse-of-discretion review, it held:

• The trial court reasonably concluded that Bowman's economist’s multi-million-dollar future lost-wage projection lacked a “reasonable basis in fact” because it rested on incomplete, non-contemporaneous, and internally suspect financial materials and on a history of nonproduction despite discovery orders.
• The trial court acted within its discretion under D.R.E. 609(b) by admitting only a generic reference to a Pennsylvania “crime of dishonesty” conviction, supported by specific facts showing heightened probative value (Bowman’s credibility in light of evidence suggesting deliberate incorrect answers on cognitive validity testing), and by offering a limiting instruction consistent with Wilson v. Sico.

3. Analysis

3.1. Precedents Cited

Miller v. State Farm Mut. Auto. Ins. Co., 993 A.2d 1049 (Del. 2010)

The Court relied on Miller v. State Farm Mut. Auto. Ins. Co. for the standard of review: evidentiary rulings are reviewed for abuse of discretion. This framing is outcome-significant because it requires deference to trial-level gatekeeping decisions unless the ruling exceeds the bounds of reason under the circumstances.

Moody v. Nationwide Mut. Ins. Co., 549 A.2d 291 (Del. 1988) (quoting Henne v. Balick, 146 A.2d 394 (Del. 1958))

In discussing lost wages, the Court reiterated the traditional damages standard (via Moody v. Nationwide Mut. Ins. Co. and Henne v. Balick): a plaintiff must provide “some reasonable basis upon which a jury may estimate with a fair degree of certainty” the probable loss. These cases supply the foundational principle that damages need not be mathematically perfect but must not be speculative.

Crucially, the Court distinguished Moody rather than following it. Moody involved past lost wages supported by contemporaneous business evidence (including a notebook of receipts and an operating business verified by an adjuster), where credibility questions were for the jury. The Court held that Moody did not control when a claim depends on an economist’s derivative projection of future losses built on disputed and incomplete tax-related materials.

Drozdov v. Webster, 345 A.2d 895 (Del. 1975)

Drozdov v. Webster is the decision’s central authority on future lost wages supported by expert economic projections. There, the Court rejected an economist’s projection because the plaintiff’s sporadic part-time earnings did not provide a factual basis to infer lifetime future earning capacity with “reasonable probability.”

In Bowman, the Court treated Drozdov as a rule of foundation and admissibility: an economist’s future lost-wage projection is not automatically admissible merely because it is “expert” testimony; it must be anchored in reliable facts that allow a jury to estimate loss with fair certainty. When the underlying data are missing, unreliable, or non-verifiable, the trial court may exclude the projection as speculative.

McMoore v. Lawrence, 2021 WL 5834381 (Del. Com. Pl. Dec. 9, 2021) and LaPoint v. AmerisourceBergen Corp., 2007 WL 2565709 (Del. Ch. Sept. 4, 2007)

These decisions were cited for the general proposition that damages cannot be “speculatively estimated.” Their role is reinforcing rather than dispositive: they support the boundary line the Court draws—reasonable estimation is permitted; conjecture is not.

Wilson v. Sico, 713 A.2d 923 (Del. 1998)

On impeachment, Bowman invoked Wilson v. Sico to argue that admitting a stale conviction was improper. The Court rejected that characterization, explaining that Wilson requires limiting the use of an admitted conviction to its proper probative purpose under D.R.E. 105. Here, the Superior Court complied by (i) restricting the evidence to a single generic “crime of dishonesty” conviction and (ii) offering a credibility-only limiting instruction.

3.2. Legal Reasoning

(A) Exclusion of lost-wage claim and economist testimony

The Court applied the “reasonable basis in fact” requirement to the inputs underlying the economist’s projection. The record featured:

• Repeated discovery requests and a court order compelling production;
• Production limited largely to IRS account transcripts and unsigned/unfiled returns (including a 2021 return prepared from figures Bowman supplied for “legal” reasons);
• Nonproduction of common business records (bank statements, invoices, payroll records, W-2s/W-3s/1099s, credit-card statements), despite Bowman’s testimony that such records existed in a home safe;
• Defendants’ economist identifying internal red flags (round-number reporting, implausibly low materials/labor costs, inconsistency with claimed workforce);
• Contradictory indicators regarding ongoing work (including surveillance footage) bearing on Bowman’s claimed impairment and earnings.

Given that Bowman's economist’s multi-million-dollar future loss figure rested on these materials, the trial court could reasonably conclude the projection lacked a reliable factual foundation. The Supreme Court emphasized that Drozdov empowers the court to keep such projections from the jury when the assumptions cannot be tied to reliable record evidence—this is not merely a “credibility” issue for cross-examination if the foundational facts are too thin or unreliable to support a non-speculative estimate.

(B) Admission of 2013 dishonesty convictions under D.R.E. 609(b)

The Court upheld admission under the stricter standard in D.R.E. 609(b), which presumptively excludes convictions older than ten years unless the probative value, supported by specific facts and circumstances, substantially outweighs the prejudicial effect.

The “specific facts and circumstances” were central: Defendants’ neuropsychologist opined that Bowman’s cognitive validity test performance strongly suggested deliberate wrong answers (i.e., malingering or intentional distortion). That put Bowman’s truthfulness directly at issue, not only as a general character matter but as a concrete dispute about whether he was falsifying test responses to support claimed injury and damages. Against that backdrop, prior convictions for forgery and theft by unlawful taking—conduct involving falsification for pecuniary gain—had heightened probative value.

Equally important, the trial court narrowed prejudice through tailoring:

• Only a generic reference to a Pennsylvania “crime of dishonesty” conviction, not the specific charges, counts, or underlying facts;
• An option for a credibility-only limiting instruction, aligning with Wilson v. Sico and D.R.E. 105.

The Supreme Court treated these safeguards as part of why the Superior Court’s balancing fell within its discretion.

3.3. Impact

Future lost-wage claims for self-employed plaintiffs

This decision strengthens Delaware trial courts’ gatekeeping authority—especially in cases involving self-employed income—by clarifying that an economist’s projection of future losses may be excluded where:

• the plaintiff fails to produce basic contemporaneous business records after being compelled to do so; and
• the remaining tax-related materials show indicia of unreliability or cannot plausibly support the assumptions embedded in the projection.

Practically, litigants should expect heightened scrutiny of “tax transcript + drafted return” packages when the damages demand is large and the records are incomplete. Plaintiffs seeking future lost wages should be prepared to supply bank records, invoicing, payroll documentation, and other corroboration that allows an earnings baseline to be verified independently.

Use of older convictions when credibility is unusually central

On impeachment, the opinion illustrates a path to admitting older dishonesty convictions under D.R.E. 609(b) when the case presents concrete reasons why credibility is a principal contested issue (e.g., alleged intentional distortion on medical/psychological testing). It also underscores that careful limiting measures—generic descriptions and limiting instructions—can be decisive in sustaining admissibility on appeal.

4. Complex Concepts Simplified

• Motion in limine: a pretrial request to admit or exclude evidence before the jury hears it, often to prevent unfair prejudice or confusion.
• Abuse of discretion: a deferential appellate standard; the appellate court will not reverse just because it would have ruled differently—only if the trial judge’s decision was outside reasonable bounds.
• “Reasonable basis in fact” / non-speculative damages: lost wages must be grounded in evidence that permits a fair, rational estimate. Large projections cannot rest on missing records or internally implausible inputs.
• Economist’s “projection” vs. “primary evidence”: an economist’s future-loss model is only as sound as the underlying facts; when the model is derivative of contested documents, courts may require stronger foundational proof than when a witness testifies to contemporaneous, verifiable historical operations.
• D.R.E. 609(a) and 609(b): Rule 609(a) generally allows impeachment with certain convictions; Rule 609(b) tightens the rule for convictions older than ten years, requiring probative value to substantially outweigh prejudice.
• Probative vs. prejudicial: probative evidence helps prove something important (here, credibility); prejudicial evidence risks unfairly biasing the jury. The court must weigh these competing effects.
• Limiting instruction (D.R.E. 105): a judge’s direction that the jury may use evidence for a limited purpose (here, credibility only), not as proof of liability or other forbidden inferences.

5. Conclusion

The Supreme Court of Delaware’s decision affirms two trial-management principles with practical bite. First, under Drozdov v. Webster, an expert projection of future lost wages is inadmissible when it lacks a reliable factual foundation—especially where the plaintiff fails to produce ordinary business records and the available tax-related documents show markers of unreliability. Second, under D.R.E. 609(b), even older dishonesty convictions may be admitted when credibility is demonstrably central to the dispute, provided the court articulates specific supporting circumstances and minimizes prejudice through careful limitation consistent with Wilson v. Sico.