Lost Wages Expert’s Commission Calculations Admitted
Posted on June 13, 2025 by Expert Witness Profiler
Jenessa Dubey was employed by Concentric Healthcare Solutions, LLC from August 2016 until her termination on December 2, 2021. She has filed a lawsuit against Concentric and Robert Bales, alleging sex-based discrimination, sexual harassment, and unpaid wages.
The case focuses on Dubey’s claims that, over several years, Bales engaged in conduct that created a hostile work environment during her time at the company.
Plaintiff retained a damages expert, Mr. Nathaniel Curtis, to calculate her lost earnings resulting from Defendants’ actions. As a result, Concentric and Robert Bales filed a motion to exclude Curtis under Federal Rule of Evidence 702 and Daubert V. Merrell Dow Pharm., Inc., 509 U.S. 579 (1993).
Lost Wages Expert Witness
Nathaniel Curtis is typically engaged to analyze lost earnings related to complex labor discrimination and wrongful termination disputes.
He holds an MBA, a Master’s Degree in Business Administration, and a Bachelor’s in “Business Ecology.” He serves as the Chief Financial Officer of a private engineering firm with over 150 employees based in Arizona.
Discussion by the Court
Curtis opined that the present value of Plaintiff’s lost earnings resulting from Defendants’ conduct is approximately $5.4 million as of January 1, 2024, based on documents produced by the parties, and information obtained from research efforts.
Curtis is Qualified under Rule 702
The Court found that Curtis is qualified to testify as an economics expert based on his education and professional experience. He holds an MBA in Business Administration and a Bachelor’s degree in Business Ecology, which satisfy the educational requirements under Rule 702. In addition, he has over ten years of experience providing expert analysis in similar cases. Therefore, the Court concluded that Curtis met the threshold qualifications to testify as an expert and will not exclude him at this pretrial stage.
Whether Curtis’ Testimony Will Assist the Jury
Defendants next argued that Curtis’ opinions about lost earning capacity are not helpful to the jury because the Plaintiff does not claim that her earning capacity was harmed. In response, Plaintiff contended that Curtis intends to testify only about the amount of her lost future earnings due to her wrongful termination by Concentric.
There appeared to be a misunderstanding between the parties regarding the scope of Curtis’ intended testimony. In his report, Curtis stated that he was engaged to “calculate [Plaintiff’s] lost earnings resulting from Defendants’ actions as described in [her] complaint.” During his deposition, he was asked about the following statement: “[t]he relevant issue is [Plaintiff’s] earning capacity as a professional, not her earning capacity at Concentric.” When asked why her earning capacity at Concentric was not considered relevant, Curtis explained: “It’s not that it’s not relevant. It’s not the goal. The goal isn’t to say what she would have earned at Concentric. It’s to understand what her earnings capacity was.”
The Court found that Curtis’ testimony will assist the jury because he will provide “knowledge beyond the trier of fact’s common knowledge.” The Defendants’ objections go to the weight of Curtis’ testimony and the evidence supporting it—not to its admissibility.
Sufficient Facts and Data
Defendant next argued that Curtis’ testimony relied on insufficient facts and data in violation of Rule 702(b). However, the Court found that Curtis’ opinions are drawn from sufficient factual grounds. Curtis stated in his report that, in developing his opinions, he reviewed documents produced by the parties, and information obtained from research efforts related to this report.
Curtis has also included an exhibit detailing the documents he relied upon which includes check stubs and an offer letter. Plaintiff also noted in her response that Curtis relied upon records of Plaintiff’s historical compensation and commissions and data regarding compensation conditions in the specific industry at the relevant time. She also argued that Defendant’s expert also relied upon these same documents to reach his opinion.
Defendants argued in their Reply that Curtis “only reviewed two commission payments to predict Plaintiff’s commissions for the remainder of her career” and that this limited review of two commission payments “is insufficient to predict almost 25 years of commissions.”
Defendant essentially argued that Plaintiff’s commission payments and wage data were reviewed in a vacuum. Yet, according to Curtis, they were reviewed in conjunction with other documents, evidence and statistics from the Bureau of Labor. Cutis then utilized these facts, data and assumptions to reach a conclusion as to Plaintiff’s lost wages. These facts and data, reviewed in the aggregate, establish sufficient factual grounds from which Curtis could form an opinion and draw conclusions from.
Reliable Principals and Methods
Defendant argued that Curtis’ opinions regarding Plaintiff’s future earning capacity and expected growth rate in the “Actual Scenario” employed an unreliable methodology.
Curtis employed a But-For Scenario and an Actual Scenario to calculate Plaintiff’s damages. He states that “the Actual Scenario differs from the But-For Scenario by assuming that [Plaintiff] will experience abnormal wage increases and commission increases in her new position because workers commonly experience several years of above average earnings increases when they pursue long-term and stable employment.”
Curtis also stated that that “with respect to the Plaintiff’s lost commissions, I reviewed Plaintiff’s pay stubs, which revealed commissions in September 2021 of $16,308 and in October 2021 of $18,011. Using historical earnings, and specifically recent historical earnings, is a generally accepted and testable data source used by experts to calculate lost earnings in wrongful termination disputes.”
Defendants objected to Curtis’ calculations regarding earning capacity growth and commissions. They also argued that he failed to explain the basis for his assumption of a 10% annual commission. However, an expert “may, in appropriate circumstances, rely on assumptions when formulating opinions.”
While Defendants argued that Curtis did not take Plaintiff’s specific job into consideration in determining what rate was appropriate, the Court held that Curtis’ opinions are indeed the product of reliable principles and methods such that he can testify under Rule 702. It should be attacked by cross examination at trial—not exclusion beforehand.
Held
The Court denied the Defendants’ Daubert motion to exclude Plaintiff Jenessa Dubey’s expert, Nathaniel Curtis, MBA.
Key Takeaway:
Curtis has applied reliable principles to form his hypothesis. It is not for the Court to gauge whether that hypothesis is ultimately correct, so long as his opinion stays “within the bounds of what can be concluded from a reliable application of the expert’s basis and methodology.”
Case Details:
| Case Caption: | Dubey V. Concentric Healthcare Solutions LLC Et Al |
| Docket Number: | 2:22cv2044 |
| Court Name: | United States District Court, Arizona |
| Order Date: | June 12, 2025 |
