OPINION OF THE COURT

GREENBERG, Circuit Judge.

This matter comes on before this court on appeal from an order of the district court entering judgment in favor of appellee Edward J. Foley, Sr., and against the International Brotherhood of Electrical Workers Local Union 98 Pension Fund (the "Pension Fund" or the "Fund"). Foley claims that the Pension Fund's Board of Trustees ("Trustees") improperly declined to grant him an exception to the pension Plan's service eligibility provisions that would have permitted him to receive a higher level of benefits than that to which he otherwise was entitled. Following a bench trial, the district court concluded that the Trustees arbitrarily and capriciously declined to apply the exception to Foley in the manner they had applied it to other employees seeking its benefit. Thus, it entered judgment in his favor on August 29, 2000. Appellants assert that the district court, when reviewing the Trustees' decision, erred in its application of the arbitrary and capricious standard, as Foley was not similarly situated to other employees to whom the Trustees had applied the exception. Appellants also appeal the district court's subsequent award of attorneys' fees to Foley by order of December 8, 2000. For the reasons set forth below, we will reverse the district court's judgment on the merits and, accordingly, we also will reverse the award of attorneys' fees.

I. BACKGROUND

Foley is the former President of the International Brotherhood of Electrical Workers Local 98 (hereinafter "the Union") and a former Trustee of the Union's Pension Fund. He worked in covered employment for Fund pension purposes, i.e., employment in the electrical industry, from 1959 until his employer laid him off in 1971. Then, from 1972 through 1980, Foley worked in his family's tire business, returning to employment in the electrical industry in 1981. Following his return to the electrical industry, Foley was elected the Union's President and he served as a Trustee of the Pension Fund from 1987 through July 1996. In July 1996, Foley retired and sought pension benefits.

Under the Plan provisions, Foley forfeited all credited service earned prior to his return to work in 1981 because of a break-in-service provision which provided, in the years applicable to Foley, that accrued pension credits lapsed when a Plan participant did not work 600 hours in covered employment for a consecutive two-year period. There is, however, an exception to the break-in-service provision, known as the available-for-work exception, wherein the Plan provides that an employee shall not forfeit credited service if he was continuously available for work within the jurisdiction of the Union and unable to obtain covered employment. Based on this exception, in 1988, shortly after Foley began his tenure as Trustee, the Trustees agreed to excuse his break-in-service pursuant to their understanding that work had not been available to him in covered employment from 1972 to 1980.

On October 28, 1994, however, Fred Compton, a former Union president and Trustee, sent Laurance Baccini, counsel to the Pension Fund, a letter stating that the 1988 decision was incorrect because the Trustees at that time based their decision on fabricated information improperly skewed in Foley's favor. Upon receipt of Compton's letter, the Trustees appointed a subcommittee to investigate Compton's allegations. Then, in February 1995, based on the subcommittee's recommendations, the Trustees reversed the 1988 decision because they concluded that there was insufficient evidence to substantiate Foley's claim that work was unavailable and that he was available for covered employment in the 1972-1974 period.

In July 1996, Foley applied for pension benefits but, based upon their 1995 decision, the Trustees denied his application insofar as it sought credits for the period between 1959-1971. Foley appealed but was not successful as the Trustees determined that he still had not presented sufficient information to establish his entitlement to credit for the disputed years of credited service.

On February 23, 1998, Foley commenced this action under the Employee Retirement Income Security Act, 29 U.S.C. § 1001, et seq. ("ERISA"), in particular 29 U.S.C. §§ 1132(a)(1)(B) and (a)(3), which action, as subsequently amended, named the Fund, the Union, the Trustees, and various Union officers as defendants. In his complaint Foley asserted that the Trustees improperly applied a more demanding evidentiary standard to him than to other employees who had been granted an exception to the break-in-service provision notwithstanding a provision in the Plan that all "interpretations and decisions shall be applied in a uniform manner to all Employees similarly situated." In addition to his ERISA claims, Foley also asserted claims under the Labor Management Reporting and Disclosure Act of 1974, 29 U.S.C. § 401 et seq., ("LMRDA"), and the Internal Revenue Code, 26 U.S.C. §§ 411 and 412. Following the parties' cross-motions for summary judgment, the district court dismissed all but Foley's ERISA claims. See Foley v. IBEW Local Union 98 Pension Fund, 91 F.Supp.2d 797 (E.D.Pa. 2000). We make no further reference to the dismissed claims, as Foley has not cross-appealed from their dismissal and has not asserted that we should affirm on the basis of these claims.

After a bench trial in August 2000, the district court found that the Trustees arbitrarily and capriciously acted contrary to the terms of the Plan when they denied Foley credit for time during his employment in the electrical industry prior to his 1971 layoff. See Foley v. IBEW Local Union 98 Pension Fund, 112 F.Supp.2d 411, 416-17 (E.D.Pa. 2000) (" Foley"). On August 29, 2000, the court entered judgment against appellants, and on December 8, 2000, entered an order granting Foley's motion for attorneys' fees. See Foley v. IBEW Local Union 98 Pension Fund, No. Civ. A. 98-906, 2000 WL 1801273 (E.D.Pa. Dec.7, 2000). Appellants have timely appealed from the judgment and order.

II. STANDARD OF REVIEW

We reverse factual conclusions of the district court only if they are clearly erroneous, see Fed.R.Civ.P. 52(a), but exercise "plenary review over the trial court's choice and interpretation of legal precepts and its application of those precepts to the historical facts." Orvosh v. Program of Group Ins. for Salaried Employees of Volkswagen of Am., 222 F.3d 123, 129 (3d Cir. 2000) (citation and internal quotation marks omitted). Where, as here, the plan administrator has discretion to interpret the Plan and the authority to determine eligibility, we review a denial of benefits under an "arbitrary and capricious" standard. Id. Under this standard:

a plan administrator's decision will be overturned only if it is clearly not supported by the evidence in the record or the administrator has failed to comply with the procedures required by the plan. A court is not free to substitute its own judgment for that of the defendants in determining eligibility for plan benefits.

Orvosh, 222 F.3d at 129 (internal quotations and citations omitted). Further, "the district court cannot, by couching a legal conclusion as a finding of fact, prevent appellate review of legal errors." Louis W. Epstein Family P'ship v. Kmart Corp., 13 F.3d 762, 766 (3d Cir. 1994) (citation and internal quotation marks omitted).

III. DISCUSSION

The Trustees denied Foley credit for the disputed years of service because the subcommittee's investigation demonstrated that work had been plentiful between 1972 and 1974, but that Foley was unavailable for work during that period due to his employment in the family tire business. The Trustees also found that Foley failed to produce any evidence supporting his claim.

Under the "arbitrary and capricious" standard of review, the district court was bound to affirm this decision if it was not contrary to the Plan's terms and was rationally related to a legitimate Plan purpose. See Orvosh, 222 F.3d at 129-31. The district court determined that although the Trustees believed in good faith that they were treating Foley the same as any other applicant seeking the benefit of the break-in-service exception, they actually treated him differently from other employees similarly situated in that they arbitrarily and capriciously subjected his application to a more demanding evidentiary standard and a stricter level of scrutiny than those of other employees. See Foley, 112 F.Supp.2d at 416. A district court, however, may not substitute its judgment for that of a plan's trustees in determining a claimant's eligibility for benefits, and, as we discuss below, the record demonstrates that the Trustees here did not arbitrarily and capriciously treat Foley as not being similarly situated to other employees to whom the exception to the break-in-service rule had been applied.

The record shows that during a Trustees' meeting in 1979, they determined that Foley forfeited the credits he earned from 1959-1971 as he had a two-year break in service as of 1973. In 1984, when, after resuming employment in the electrical industry, Foley inquired as to the status of those credits, Compton informed him that they had been forfeited and that it was "too late" to save them.

In 1988, six months after Foley was elected President of the Union, he appointed himself, Paul Gilmore, and James Mackin to three of the six positions on the Fund's Board of Trustees. Shortly thereafter, the Board of Trustees granted Foley credits for the years 1959-1971, reversing its prior forfeiture of his credits even though he had not applied formally for their reinstatement. Indeed, Foley did not present documentary evidence to support the award of credits at the time he was awarded the credits. Instead, Mackin and Gilmore spoke on Foley's behalf, and the Trustees appear to have accepted their statements as true. The record shows, however, that Mackin and Gilmore did not have first hand knowledge of the germane facts as they had not been employed full time in the electrical industry during the 1972 to 1974 period.

In October 1994, however, the Trustees received Compton's letter, "seriously question[ing]" the 1988 decision and stating that "the [1988] pension trustees may have been either misled or misinformed" when they reinstated Foley's credits. Confronted with this formal written challenge, the Trustees determined that they were obliged to review the facts and, accordingly, created the subcommittee to investigate the issues Compton raised in his letter.

The subcommittee rendered its report in late 1994 or early 1995. It found that work opportunities were "plentiful" from 1971 through 1974 and, according to the record available to it, the hours electricians worked during that period evidenced "full employment, a few visiting brothers working and a decent amount of overtime." The subcommittee also determined that the Trustees in 1988 primarily relied on Gilmore's statement that Foley was available for work but Gilmore admitted to the subcommittee that he knew only of Foley's availability after 1975. The subcommittee interviewed Foley, who stated that he went into the family business in 1972 and periodically checked to see if electrical work was available.

We recognize that the subcommittee noted that the lack of evidence supporting Foley's alleged availability for work in the electrical industry and inability to find work was not "unique" and that the "available for work-no work available" exception had been applied liberally. In fact, the subcommittee's report included a list showing each case in which the exception had been applied since 1980. Consequently, the subcommittee recommended that the Trustees construe the exception more strictly than they had in the past and that if they did so in Foley's case, they also should "examine" the included list, making "appropriate adjustments." Id. at 254-255.

In February 1995, following their review of the subcommittee's report, the Trustees unanimously voted to remove the credited service from Foley's pension record but advised him that at any time he could submit a request for reconsideration attaching relevant documentation. The Trustees also resolved to reinvestigate all other individuals to whom the "available for work-no work available" exception had been applied. See Foley, 112 F.Supp.2d at 413.

In July 1996, when Foley applied for benefits, he did not submit additional information supporting a credit for service from 1959 to 1971. Accordingly, the Trustees awarded Foley pension benefits taking into account his break in service. Foley appealed the decision, but the Trustees concluded that they had "insufficient evidence as to the unavailability of work and Mr. Foley's inability to obtain covered employment during the Plan years 1972, 1973 and 1974."

The district court found that the Trustees acted in good faith and believed they did not treat Foley differently than other employees. Foley, 112 F.Supp.2d at 415. However, the court determined that the Trustees actually held Foley to a stricter standard "than any other individual in like circumstances," id., arbitrarily and capriciously violating their duty to interpret the Plan and apply decisions "in a uniform manner to all Employees similarly situated." Id. at 416 (citation omitted).

The district court made much of the fact that the Trustees appointed the subcommittee to investigate the circumstances under which Foley had been granted the exception in 1988, yet failed to form a subcommittee to examine "any other plan participant's pension application." Foley, 112 F.Supp.2d at 415. As the district court recognized, however, the allegations of impropriety that Compton raised in his letter "justified a review of plaintiff's claim to determine whether there was any impropriety." Id. at 414 n. 2. Thus, given the allegations of impropriety in the Compton letter, and in light of their fiduciary duties to the Fund, the Trustees reasonably and appropriately appointed the subcommittee in Foley's case.

The district court next took issue with the actions the Trustees took upon receipt of the subcommittee's report. See id. The court seems to have been of the view that because the investigation yielded "no evidence of wrongdoing or deceit," the Trustees were bound to grant Foley's application for benefits as they had with "a number of individuals who sought refuge under the break-in-service exception . . . who, like Foley, produced a minuscule amount of evidence." Id. The court also seemed frustrated with the fact that the Trustees had not conducted an investigation with respect to the other employees who were granted the benefit of the exception. Id. at 415. These cases differed from Foley's, however, in that these employees' eligibility for the exception never was challenged. Further, the subcommittee did not uncover any evidence suggesting that any of them acquired pension credits through improper means.

In essence, the court held that because Foley was "similarly situated" to other employees who had benefitted from a liberal interpretation of the available-for-work exception, the Trustees' failure to award him the break-in service credits was "arbitrary and capricious." Foley, 112 F.Supp.2d at 416. The premise of the court's decision was, however, erroneous as Foley was not similarly situated to rank and file Union members who had been granted the benefit of the exception. Rather, he was a Trustee when he sought to have service credits added to his pension record, and he appointed the Trustees who spoke on his behalf and apparently voted to grant him the benefit of the exception. Moreover, Foley's case was the only one under the available-for-work exception where issues of impropriety were raised, and his case was the only one in which the employee's entitlement to benefits under the exception was challenged. Furthermore, upon review of the subcommittee's report, the Trustees recognized that they did not have evidence to support the application of the exception to Foley.

It is also significant that at a time that he should have been "continuously available for work" in order for his break in service to be excused, Foley was engaged in the family tire business and thus had an incentive not to work in the electrical industry. When the district court made its determination that the Trustees acted arbitrarily and capriciously, it should have recognized that this circumstance distinguished Foley's case from those of other supposedly "similarly situated" employees who were granted the benefit of the exception, as Foley made no showing that they had incentives equivalent to his to eschew employment in the electrical industry. In the circumstances, it cannot reasonably be held that the Trustees arbitrarily and capriciously treated Foley differently from other employees similarly situated, and thus the district court erred in reaching its result.

We emphasize that in focusing on the fact that credit under the available-for-work exception had been granted liberally in the past rather than examining whether the Trustees' decision was contrary to Plan language or whether it was rationally related to a legitimate Plan purpose, the district court did not properly credit significant evidence. This evidence included the subcommittee's finding that work was plentiful from 1972-1974, the Trustees' own recollections and understanding regarding the availability of work during that time, Gilmore's admission to the subcommittee of his lack of knowledge of the germane facts, Foley's failure to present evidence, and the circumstances in which Foley was originally granted the exception. The court, however, should have relied on this evidence as it was not free to substitute its judgment for that of the Plan administrators. See Orvosh, 222 F.3d at 129.

Moreover, the district court's holding binds the Trustees to a result that was a consequence of poor administrative practices, that the Trustees later corrected. In effect, the district court's decision improperly "straitjackets" the Trustees into granting benefits simply because of their past practices. See Oster v. Barco of Cal. Employees' Ret. Plan, 869 F.2d 1215, 1219 (9th Cir. 1988) (holding that prior record of granting requests is insufficient to establish that committee denied request in arbitrary and capricious manner and stating "[t]o hold otherwise would impair the flexibility necessary for proper financial management of such plans, a goal of Congress in holding ERISA fiduciaries to the `prudent man' standard") (citation and internal quotation marks omitted). See also Nazay v. Miller, 949 F.2d 1323, 1336 (3d Cir. 1991) (plan administrator's decision not to waive requirement "was neither arbitrary nor capricious and did not constitute an abuse of discretion" where plan administrator waived requirement on 14 previous occasions). We are particularly troubled by the fact that the district court effectively read the break-in-service forfeiture provision out of the Plan, as under the court's conclusions it is difficult to see how it ever could be applied in the face of an employee's claim that he is entitled to the benefit of the exception.

The district court's opinion also is problematical for another quite fundamental reason. While we know that the break-in-service exception was excused in 20 other cases in which employees claimed its benefit, the district court had no way of knowing the number of situations in which employees lost credits by reason of a break in employment during a consecutive two-year period but did not seek the benefit of the exception. Certainly if there were such employees, they were treated the same as rather than differently from Foley. But the district court did not consider this possibility.

In summary, we conclude that in appointing a subcommittee to investigate the claims against Foley, the Trustees acted quite responsibly and consistently with their obligations as fiduciaries. Moreover, inasmuch as the Trustees' decision to deny the disputed benefits was not contrary to the Plan's terms and was rationally related to a legitimate Plan purpose, the district court erred in determining that the Trustees acted in an arbitrary and capricious manner. Furthermore, because Foley was not similarly situated to the other employees who were granted the benefit of the exception, the Trustees were not bound to grant him the benefit of the exception merely because they had applied it in other cases. Accordingly, we will reverse the judgment of the district court.

IV. ATTORNEYS' FEES

Finally, we come to the question of the attorneys' fees which ERISA permits when a participant, beneficiary or fiduciary succeeds on any significant issue in the litigation which achieves some of the benefit sought from the suit. See 29 U.S.C. § 1132(g)(1). In light of our conclusions, it is clear that Foley has not prevailed on a significant issue in the litigation and thus, we will therefore reverse the district court's award of attorney fees. See Hensley v. Northwest Permanente P.C. Ret. Plan Trust, 258 F.3d 986, 1002-03 (9th Cir. 2001).

V. CONCLUSION

For the foregoing reasons, we will reverse the district court's judgment of August 29, 2000, and its order of December 8, 2000, and will remand the matter to the district court to enter judgment for the defendants.