Plaintiff-appellee-cross-appellant Paul Cummings brought this suit in Massachusetts Superior Court, alleging that defendant-appellant-cross-appellee Standard Register, Co. discriminated against him on the basis of age in violation of Mass. Gen. Laws ch. 151B, § 4. Standard Register removed the case to the federal district court for the district of Massachusetts and, after a ten-day trial, a jury found in favor of Cummings and awarded him $990,000 in combined front pay, back pay, and emotional distress damages. The district court doubled the front and back pay awards and denied Standard Register’s motions for judgment as a matter of law, a new trial, or remittitur. On appeal, Standard Register challenges the court’s admission of three witnesses’ testimony and its refusal to remit the front pay award. Cummings cross-appeals, seeking prejudgment interest on the jury’s award as well as attorney’s fees. We affirm in part and reverse in part.
BACKGROUND
We highlight from the voluminous record the following facts relevant to these appeals.
Standard Register provides document management systems and services to companies within the health care, financial, and general business markets. On January 1, 1998, Standard Register acquired its *60 competitor, UARCO, where Cummings, at the time forty-nine years old, had worked for seventeen years as a National Account Director (NAD) in health care sales for the northeastern United States. This area included all of New England, New York, New Jersey and the Philadelphia metropolitan area.
Standard Register had a similar position to Cummings’ called a National Account Manager (NAM). For the northeast region, Standard Register assigned two NAMs: Pamela Pedler, age thirty-one, covered New England and the New York metropolitan area, and Timothy Gabb, age forty-nine, covered the “Mideast” area, which extended westward from Pennsylvania into Ohio. As a result of the merger, Standard Register had an overlapping sales force in the northeast, with Pedler, Gabb, and Cummings covering some of the same regions. Standard Register directed Ted Stark, the head of Standard Register’s National Healthcare Accounts, to integrate the sales force and eliminate overlapping sales areas.
To do this, Stark decided to divide the New England/New York metropolitan area into two different regions. In filling the positions, Stark reassigned Gabb to the New York metropolitan area, and reduced Pedler’s sales region to the New England area. Stark then hired 30-year old Jed Cavadas, a former UARCO employee, to represent the firm in the Mideast area. Cummings was not offered a position. Stark advised Cummings to contact two regional sales managers for other sales openings, but both managers told Cummings that they had none available. Cummings’ employment thus ended.
On December 30, 1998, Cummings brought an action in Massachusetts Superior Court, alleging that Standard Register had terminated his employment on account of his age. 1 According to Cummings, Stark informed him that he was being terminated because he did not fit Standard Register’s model of someone “young, handsome, aggressive, a little arrogant, and just like Jed Cavadas.” Cummings also alleged that the six different, nondiserimi-natory reasons offered by Standard Register at various times were pretexts for age animus. Standard Register removed the case to federal court based on diversity jurisdiction, 28 U.S.C. § 1332, on February 16,1999.
During discovery, Cummings and Standard Register sought to reach informal and formal agreements concerning the production of documents and taking of depositions. On March 3, 1999, Cummings made an informal request for the production of the personnel files of Pedler, Gaab, and Cavadas. Cummings served a formal request for these same documents on April 2, 1999. On April 26, Standard Register agreed to produce the documents on the condition that they be viewed only by Cummings’ attorney and his staff. Cummings filed an “emergency motion” to compel production of the documents without the stipulation on April 28, 1999, five days before Standard Register’s response to the formal request was officially due. Included in the motion was a requést for attorney’s fees for expenses incurred in filing the emergency motion. The magistrate judge granted the emei-geney motion but denied the request for attorney’s fees because the motion had been filed prior to the expiration of the thirty day time period in which Standard Register’s response was due. Cummings filed a motion to recon *61 sider which was denied by the district court on October 25,1999.
Trial commenced on January 10, 2000. In presenting his case, Cummings offered the deposition testimony of two former Standard Register employees, John Weatherly and J. Michael Talley, who believed that they also were victims of age discrimination. Weatherly, who worked as a field engineer in Nashville, Tennessee stated that beginning in 1996, his boss, Gabe Perkins, indicated that he would be terminating Weatherly because he and other employees were “too old to do the job” and because “the older guys and guys like [him] just [didn’t] have the stamina to ... keep up with this.” Weatherly also testified that Perkins’ age-related comments to him and others “[were] like a broken record about these men.” Talley worked as a sales representative in Seattle, Washington from 1984 to 1998. Talley testified that his supervisor, Rick Campbell, repeatedly told him that Standard Register needed to make room for “young blood.” Talley also stated that after he was replaced by a younger employee, he filed an age discrimination complaint with the EEOC, which was removed to federal court and ultimately settled.
Cummings also introduced live testimony from his economic expert, Martin Duffy. Duffy testified to Cummings’ future losses as a result of being terminated by Standard Register. 2 To calculate this, Duffy used Cummings’ 1997 UARCO salary and bonus, which totaled $88,120, as a base salary. Using the average earnings increases cited by the Bureau of Labor Statistics (BLS) for salaried workers in the U.S. economy, Duffy increased Cummings’ 1997 base salary by 3.9% per year to estimate his future salary. Estimating that Cummings would retire at age 63.83, adding in the value of future fringe benefits, and subtracting the income and benefits Cummings would earn if he continued at his (then) current employment, Duffy arrived at a total estimate for future front pay losses. On direct examination, Duffy testified that he estimated that, in 1999, Cummings would have earned $95,128 if he had stayed at Standard Register, and, in 2000, $109,824. He further testified that, based on his various assumptions, Cummings’s future losses would total $656,867. This $656,000 figure was the expert’s first front pay figure. However, he later withdrew it as being in error.
After being cross-examined, Duffy realized that either he or his software had made a mathematical error in applying the estimated 3.9% annual salary increases, resulting in inflated salary estimates for 1999 and all subsequent years. After the court recessed for the evening, Duffy performed new calculations. Continuing on cross-examination on the following day, Duffy revised his estimate downward. To further complicate the matter, neither on cross-examination nor on re-direct did Duffy explicitly state the corrected front pay estimate. Instead, he gave a corrected figure for total losses (past and future), which was $162,155 less than his initial estimate for total losses. Because the mathematical error did not affect the past losses figure, the corrected estimate for future losses would be $494,712. And so, the expert’s final front pay figure was the $494,000 figure.
Duffy also conceded on cross-examination that he had not used data specific to Standard Register, such as its average retirement age and its caps on compensation, *62 nor considered the nature of the health care market in reaching his calculations. In addition, he stated that rather than using the mean of Cummings’ earnings over the past five years as a base, he used Cummings’ salary in 1997, a higher-than-average earnings year. Following Duffy’s testimony, Standard Register made a motion to strike the expert evidence, which the district court denied.
Duffy’s expert report was not introduced into evidence, nor was the posterboard he used during testimony to explain his calculations given to the jury. The jurors did not request a transcript of his testimony. They had only their own hand-written notes and memories of his testimony to guide them in arriving at a damages award.
On January 24, 2000, the jury returned a verdict in favor of Cummings and awarded him $665,000 in front pay, $150,000 in back pay, and $175,000 in emotional distress damages. The district court struck the emotional distress damage award because it was not included in Cummings’ complaint and, pursuant to Mass. Gen. Laws ch. 151B, § 9, doubled the front and back pay awards for a total award of $1.63 million. Cummings v. Standard Register, No. 99-10368-RWZ, at 8-10, 17-18 (D. Mass. June 1, 2000). Standard Register filed a motion to strike, or in the alternative, to remit, the jury’s front pay award on the grounds that it was speculative and excessive. The court denied both motions. Id. at 10-12.
On February 14, 2000, Cummings applied for an award of attorney’s fees for all services rendered in the case, including those rendered by paralegals, law clerks, and associates. The district court reduced the number of hours of compensation for four of the attorneys and the hourly rate for one attorney, and entered an award of attorney’s fees in the amount of $287,331.50. Id. at 12-17. Adding fees and costs, the court entered final judgment in the amount of $1,934,516 on June 6, 2000. 3 Id. at 17. Cummings moved to alter or amend the judgment to include interest on the front pay award from the date of the verdict to the date of entry of judgment. On August 4, 2000, the district court denied the motion.
DISCUSSION
The issues raised on appeal are whether the district court erred in: (i) admitting the deposition testimony of Weatherly and Talley; (ii) admitting the testimony of Cummings’ expert, Martin Duffy; (iii) refusing to remit the jury’s front pay award; (iv) failing to grant attorney’s fees on the motion to compel discovery; and (v) denying Cummings’ motion for prejudgment interest on the front pay award from the date of the verdict to the entry of final judgment. We will address each issue in turn.
A. Evidentiary Issues
Standard Register claims that other employees’ allegations of age discrimination were irrelevant and unfairly prejudiced its case. Fed.R.Evid. 401, 403. It also argues that Duffy failed to meet the requirements for expert testimony under Fed.R.Evid. 702. We review a district court’s decision to admit or exclude testimony for an abuse of discretion.
Sheek v. Asia Badger, Inc.,
*63 1. Weatherly and Talley Testimony
Rule 401 of the Federal Rules of Evidence states that evidence is relevant if it “has any tendency to make the existence of any fact that is of consequence to the determination of the action more or less probable than it would be without the evidence.” We have noted previously that this standard grants the district court substantial latitude in admitting testimony and for that reason, “[o]nly in exceptional cases will reversible error be found in the district court’s determination of the probative value of testimony in a particular case.”
Conway v. Electro Switch Corp.,
[I]t seems to me that, that the atmosphere, if you will, at the company is relevant for the purposes of drawing-inferences one way or the other .... So I think that what happened at the company in general and what people heard is indeed relevant to the plaintiffs showing that there was an atmosphere that permits the inference he is asking the jury to draw.
We believe that the court did not abuse its discretion under Rule 401.
The sole issue at trial was whether age was a motivating factor in Standard Register’s decision to terminate Cummings. We have recognized that .since discrimination is often subtle and pervasive, plaintiffs must be able to rely on circumstantial evidence to prove diserimi-natory intent.
See id.
To this end, evidence of a discriminatory “atmosphere” may sometimes be relevant to showing the corporate state-of-mind at the time of the termination.
See id.
While such evidence does not in itself prove a claim of discrimination,
see Ruíz v. Posadas de San Juan Assocs.,
Standard Register challenges the relevancy of the testimony on the ground that it covered different time periods, different supervisors, and different areas of the company. It is true that evidence of discrimination can be “too attenuated” to justify admission,
Conway,
Of course, decisions to admit or exclude such evidence always demand careful balancing, and it is noteworthy that any prejudicial effects of the testimony were further mitigated in light of the other evidence presented in this case.
See
Fed. R.Evid. 403;
see also Kelley v. Airborne Freight Corp.,
2. Testimony of Martin Duffy
Under Rule 702, a witness may testify to scientific, technical, or other specialized knowledge if it “will assist the trier of fact to understand the evidence or to determine a fact in issue.” Fed.R.Evid. 702;
see Daubert v. Merrell Dow Pharms., Inc.,
*65
Standard Register first challenges the methodology employed by Duffy in calculating Cummings’ future losses. According to Standard Register, Duffy’s failure to take into account company-specific data^ — such as the average retirement age of its workers or its salary caps — as well as his use of an unusually high earnings year as a base point contributed to an inflated and inaccurate forecast of front pay damages. It may be true that using specific variables would have resulted in a lower, and perhaps more accurate, figure. However, during cross-examination, Duffy offered sufficient explanations for why he chose to use BLS data and Cummings’ 1997 salary in his calculations.
6
See, e.g., McMillan v. Mass. Soc’y for the Prevention of Cruelty to Animals,
Standard Register also highlights Duffy’s computational error that was exposed on the second day he testified. The inflated estimation of Cummings’ salary for the year 2000 could raise some red flags concerning the reliability of the predicted front pay damages. However, Duffy’s mistake was not only revealed to the jury, but was duly corrected while he was still on the stand. The district court determined that as a result, Standard Register could argue, and Cummings would have to concede, that Duffy’s report contained errors, allowing the jury room to discredit his testimony accordingly. We do not believe that this was an abuse of the court’s discretion and affirm its decision to let the testimony stand.
See Ed Peters Jewelry,
B. Front Pay
Standard Register next challenges the amount of front pay awarded by the jury. First, Standard Register argues
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that the fourteen-year time period covered by the award is unduly speculative. Alternatively, Standard Register assigns as error the district court’s refusal to remit the jury’s award based on the fact that it exceeded Duffy’s estimates. We review the district court’s determination to uphold the jury’s award for an abuse of discretion,
Kelley,
1. Duration of the Front Pay Award
We begin by noting that “[a]n award of front pay, constituting as it does, an estimate of what a plaintiff might have earned had s/he been reinstated at the conclusion of trial, is necessarily speculative.”
Kelley,
Examining the damages award in the light most favorable to Cummings,
Kelley,
2. Award in Excess of Expert’s Testimony
After correcting for his computational error, Duffy estimated Cummings’ total front pay damages to be $494,712. The district court concluded that since Duffy offered only a “conservative” estimate, the jury was allowed some margin to increase the award.
8
Reasonable minds could certainly question whether Duffy provided the jury with enough evidence to arrive at a higher figure, even if the jury used less conservative assumptions (such as a later retirement age or a lower discount rate). Under Massachusetts law, determinations as to the amount of front pay damages are within the “common sense” of the jury and do not require expert testimony.
See, e.g., Griffin v. General Motors Corp.,
C. Attorney’s Fees
In his cross-appeal, Cummings first challenges the magistrate judge’s denial, and the district court’s refusal to reconsider, his request for attorney’s fees based on his motion to compel discovery.
9
*68
We review a district court’s handling of pretrial matters, including discovery, for an abuse of discretion.
Thibeault v. Square D Co.,
Under Rule 37(a)(4)(A),
If the motion is granted or if the disclosure or requested discovery is provided after the motion was filed, the court shall, after affording an opportunity to be heal'd, require the party ... whose conduct necessitated the motion ... to pay to the moving party the reasonable expenses incurred in making the motion, including attorney’s fees, unless the court finds that the motion was filed without the movant first making a good faith effort to obtain the disclosure or discovery without court action, or that the opposing party’s nondisclosure, response, or objection was substantially justified, or that other circumstances make an award of expenses unjust.
Fed.R.Civ.P. 37(a)(4)(A). Cummings filed a formal request for other employees’ personnel files on April 2, 1999. Pursuant to Fed.R.Civ.P. 34(b), “[t]he party upon whom the request is served shall serve a written response within 30 days after the service of the request.” Cummings could have requested the court to shorten the response period. Fed.R.Civ.P. 34(b). Since he did not, Standard Register’s response to its formal request was due on May 3, 1999. Cummings filed his motion to compel discovery on April 28, 1999, five days before Standard Register’s response was due. In denying Cummings’ request for attorney’s fees, the magistrate judge determined that imposing sanctions on Standard Register for failing to produce documents before its time period for filing a response (to the original request) had expired would be “unjust.” This reasoning falls squarely within the ambit of the rules and was clearly not an abuse of discretion. We therefore uphold the magistrate judge’s denial of attorney’s fees in this regard as well as the district court’s denial of both Cummings’ motion to reconsider and request for additional attorney’s fees spent appealing the magistrate judge’s ruling.
D. Prejudgment Interest
Cummings also challenges the district court’s denial of prejudgment interest on the front pay award from the date of the jury’s verdict, January 24, 2000, to the entry of judgment on June 4, 2000. Both parties concede that post-judgment interest on state law claims is governed by federal law.
See, e.g., Fratus v. Republic W. Ins. Co.,
Cummings bases his argument on Massachusetts law, which states that “[w]hen judgment is renderd [sic] upon the verdict of a jury ... interest shall be computed upon the amount of the .’.. verdict ... from the time when made to the time the judgment is entered.” Mass. Gen. Laws ch. 235, § 8. However, this statute, which is followed by language indicating that “[e]very judgment for the payment of money shall bear interest from the day of its entry,”
id.,
has been interpreted by the Supreme Judicial Court of
*69
Massachusetts as providing interest at the prejudgment rate following entry of judgment.
See, e.g., City Coal Co. of Springfield v. Noonan,
CONCLUSION
The decision of the lower court is affirmed in part, reversed in part, and the case remanded for further proceedings consistent with this opinion.
Notes
. Cummings filed a complaint with the Massachusetts Commission Against Discrimination (MCAD) on April 28, 1998. He closed his administrative case prior to filing his complaint in state court.
. Duffy also offered an estimate of Cummings’ past losses, which are not challenged on appeal.
. An amended judgment awarding Cummings an additional $875 in costs was entered on August 22, 2000.
. Contrary to Standard Register’s assertions, anecdotal evidence is not limiLcd to "pattern and practice” suits. In the disparate treatment context, such evidence is offered because "an employer’s willingness to consider impermissible factors such as race, age, sex, national origin, or religion while engaging in one set of presumably neutral decisions ... might tend to support an inference that such impermissible considerations may have entered into another area of ostensibly neutral employment decisions — here, an employee’s termination.”
Conway,
. The court also sustained the majority of Standard Register’s specific objections to particular parts of the Weatherly and Talley testimony.
. In particular, Duffy stated that the BLS figures were in fact lower than the average growth rate of Standard Register’s salaries, that Standard Register's salary caps did not include what a worker could earn through a bonus, that using Cummings’ 1997 salary (rather than a mean) more accurately reflected his labor productivity, and that company-specific retirement data (specifically its qualifying retirement age on its 401 (k) plan) might have been “helpful” but would not necessarily affect when a person retires.
. Standard Register itself also failed to present evidence of the same statistical data it claims was easily accessible to Duffy.
Cf. Kelley v. Airborne Freight Corp.,
. The district court highlighted five assumptions made by the economic expert, "any one of which the jury could have decided was too conservative and resulted in a damage award that was too low.” These included the assumptions that: (i) Cummings would receive the award in a regular stream rather than in a lump sum payment (which would result in additional tax consequences); (ii) Cummings would not enter any periods of unemployment; (iii) Cummings would retire at age 63.83 rather than work until age 65 or longer; (iv) the discount rate was 3% rather than a lower number that would result in greater damages; (v) Cummings compensation, with sales bonuses, would not be greater than Duffy's projections.
. Cummings' additional argument that the district court awarded "no fees for any services performed by either paralegal workers or law clerks,” is utterly baseless. The district court awarded a total of $287,331.50 in attorney's fees, $264,750 of which was for work performed by attorneys. The remaining $22,581.50 was for the work performed by law clerks and paralegals, exactly the amount *68 Cummings now claims was denied by the couri.
