MARTIN, J., delivered the opinion of the court, in which DAUGHTREY, J., joined. BATCHELDER, J. (pp. 448-50), delivered a separate dissenting opinion.
OPINION
BOYCE F. MARTIN, JR., Circuit Judge.Defendant Sun Life appeals the district court’s decision that Sun Life’s denial of long-term disability benefits to Plaintiff Sherry DeLisle was arbitrary and capricious. We agree with the district court that Sun Life’s determination did not result from a deliberate and principled reasoning process. Accordingly, we AFFIRM.
I.
Sidney Krandall & Sons, a retail jeweler, employed Sherry DeLisle as Director of Operations from January 1996 until April 2002. While at Krandall, DeLisle participated in its disability plan, which was funded by a group policy of long term disability insurance issued by Sun Life. Under the policy, disability occurred when:
[Djuring the Elimination Period and the next 24 months, the Employee, because of Injury or Sickness, is unable to perform the Material and Substantial Duties of his Own Occupation. After Total or Partial Disability benefits combined have been paid for 24 months, the Employee will continue to be Totally Disabled if he is unable to perform with reasonable continuity any Gainful Occupation for which he is or becomes reasonably qualified for by education, training or experience.
In 1998, DeLisle was involved in a car crash, suffering head, neck, and back injuries for which she underwent a full anteri- or spinal fusion. DeLisle was involved in a second car crash in 2000, in which she re-injured her spine and suffered a closed head injury. She continued working after these crashes, under the care of three healthcare providers. They included Dr. Ho, a neurosurgeon, Dr. Rudy, a doctor of osteopathy, and Diane Cushing, a licensed professional counselor who treated DeLisle for “cognitive behavioral therapy.”
On April 17, 2002, Krandall fired DeLi-sle because, as it reported to Sun Life, she “she was not doing her job.” The record does not reveal whether DeLisle “not doing her job” was related to injury or sickness. DeLisle filed for state unemployment benefits, stating in her application that she was fired due to “lack of work.” She worked at another job for about two weeks, but was fired, because, as she reported to Cushing, she “held [her] ground about how may hours [she] would work.” In December, about eight months after she was fired from Krandall, DeLisle filed a claim for long-term disability benefits with Sun Life. She supported her claim with her medical records and five attending physician statements, all finding her disabled from performing her “own occupation” as of April 17 — her last day of work at Krandall.
In 2003, the Social Security Administration determined that DeLisle was disabled and eligible for Social Security Disability Insurance payments effective April 17, 2002. Despite this, Sun Life denied DeLi-sle’s claim and upheld its decision on appeal, finding that she was “not covered” under its policy because she was not “actively at work” when her disability arose. DeLisle challenged this in district court under Section 502(a)(1)(B) of ERISA. 29 U.S.C. § 1132(a)(1)(B). The district court decided that Sun Life’s denial was arbitrary and capricious and set aside its deci*444sion, ordering it to determine whether De-Lisle was disabled on the day Krandall fired her — -April 1Y, 2002.
On remand from the district court, Sun Life considered DeLisle’s medical evidence which included opinions from Dr. Ho, Cushing, and Dr. Rudy, all of whom had treated her in the months before her firing. She also gave Sun Life opinions about her condition from Dr. Noomie, a doctor of chiropractics, Dr. Kerkar, a medical doctor specializing in pain management, and Dr. Branca, a neuropsychol-ogist. Those providers diagnosed her as suffering from: neck and low back injuries, including degenerative disc disease, radiculopathy (a condition resulting from nerve damage), closed head injury, chronic pain syndrome, post traumatic syndrome, major depressive disorder, and a Class 5 mental impairment, characterized by “significant loss of psychological, physiological, personal, and social adjustments.”
Sun Life sent DeLisle’s medical records for review by Dr. O’Connor, a clinical neu-ropsychologist, Dr. Himber, a psychiatrist, and Dr. Sarni, an orthopedist, as well by a rehabilitation consultant. Sun Life denied her claim a second time, this time saying that the medical evidence did “not document the presence of conditions physical, psychological, or cognitive in nature of such severity that [DeLisle] could not continue to perform her occupation on April 17, 2002 or thereafter.... ” DeLisle appealed and Sun Life sent her medical records to three more reviewers including Dr. Johnston, a neuropsychologist, Dr. Pies, a psychiatrist, and Dr. Corzatt, an orthopedic surgeon. Five of the six file reviewers were regular independent contractors with Sun Life. After the reviewers gave Sun Life their opinions, it upheld its earlier denial.
DeLisle sued Sun Life again under ERISA Section 502(a). The district court granted DeLisle’s motion for judgment on the administrative record on October 12, 2007 because Sun Life’s denial of benefits was arbitrary and capricious. Delisle v. Sun Life Assurance Co. of Can., 2007 WL 3013075 (E.D.Mich. Oct. 12, 2007). The district court sent DeLisle’s claim back to Sun Life to determine her benefit amount, and it later ordered Sun Life to pay her attorneys’ fees. Sun Life now appeals.
II.
We “review de novo the decision of a district court granting judgment in an ERISA disability action based on an administrative record.” Glenn v. MetLife, 461 F.3d 660, 665 (6th Cir.2006), aff'd, Met. Life Ins. Co. v. Glenn, — U.S. -, 128 S.Ct. 2343, 171 L.Ed.2d 299 (2008). If, as here, the insurance plan administrator is vested with discretion to interpret the plan, we review the denial of benefits under the arbitrary and capricious standard. Id. (citing Firestone Tire & Rubber Co. v. Bruch, 489 U.S. 101, 115, 109 S.Ct. 948, 103 L.Ed.2d 80 (1989)). This requires “review of the quality and quantity of the medical evidence and the opinions on both sides of the issues.” McDonald v. W.-S. Life Ins. Co., 347 F.3d 161, 172 (6th Cir.2003). The plan administrator’s decision should be upheld if it is “the result of a deliberate, principled reasoning process” and “supported by substantial evidence.” Glenn, 461 F.3d at 666.
III.
This Court considers several factors in reviewing a plan administrator’s decision, including the existence of a conflict of interest, the plan administrator’s consideration of the Social Security Administration determination, and the quality and quantity of medical evidence and opinions. Id. Here, we also review Sun Life’s *445reliance on non-medical evidence to deny benefits.
A. Conflict of Interest
The Supreme Court recently held that a conflict of interest exists for ERISA purposes where the plan administrator evaluates and pays benefits claims, even when, as here, the administrator is an insurance company and not the beneficiary’s employer. Glenn, 128 S.Ct. at 2348-50. We give more weight to the conflict “where circumstances suggest a higher likelihood that it affected the benefits deci-sion_” Id. at 2351. A conflict may affect a benefits decision in several ways. For example, although the treating physician rule does not apply in ERISA cases, the Supreme Court has acknowledged that “physicians repeatedly retained by benefits plans may have an incentive to make a finding of ‘not disabled’ in order to save their employers money and preserve their own consulting arrangements.” Black & Decker Disability Plan v. Nord, 538 U.S. 822, 832, 123 S.Ct. 1965, 155 L.Ed.2d 1034 (2003). And our own Court has observed that when a plan administrator both decides claims and pays benefits, it has a “clear incentive” to contract with consultants who are “inclined to find” that a claimant is not entitled to benefits. Kalish v. Liberty Mutual/Liberty Life Assurance, 419 F.3d 501, 507 (6th Cir.2005).
Here, DeLisle offers more than conclusory allegations of bias. Five of the six file reviewers Sun Life relied on were under regular contract with Sun Life. The record reveals that Sun Life’s in-house attorney told at least some of its medical file reviewers that DeLisle was “terminated for cause.” But that is not what Kran-dall told Sun Life — the only information in the record about the reason for DeLisle’s firing is a transcribed telephone message taken by a Sun Life employee which reports that someone from Krandall said DeLisle was fired “because she was not doing her job.” There is no further documentation or explanation from Krandall about the circumstances surrounding the firing. Sun Life’s attorney’s characterization as “terminated for cause” discounts the possible conclusion that “she was not doing her job” because “sickness or injury” left her unable “to perform [her job’s] substantial and material duties.” Of course, DeLisle’s ability to perform her job was the very question Sun Life wanted the medical file reviewers to answer. Without more, the bald assertion that she was fired “for cause” gave the file reviewers incomplete and potentially prejudicial information, which should have been irrelevant to an impartial assessment of DeLisle’s ability to perform her job on a particular day. We find an increased risk of bias in the medical file review process when a conflicted plan administrator gives information to regular independent contractor-consultants that portrays the claimant in a negative light. These improper communications suggest “procedural unreasonableness” which “justifies the court in giving more weight to the conflict.” See Glenn, 128 S.Ct. at 2352. We thus properly consider evidence of the “incentive” to make a finding of “not disabled” in determining whether Sun Life’s decision was arbitrary and capricious. Kalish, 419 F.3d at 508 (citing Nord, 538 U.S. at 832, 123 S.Ct. 1965).
B. Social Security Administration’s Determination of Total Disability
A determination that a person meets the Social Security Administration’s uniform standards for disability benefits does not make her automatically entitled to benefits under an ERISA plan, since the plan’s disability criteria may differ *446from the Social Security Administration’s. Whitaker v. Hartford, 404 F.3d 947, 949 (6th Cir.2005). Nonetheless, the Social Security Administration’s decision “is far from meaningless.” Calvert, 409 F.3d at 294. Although there is no technical requirement to explicitly distinguish a favorable Social Security determination in every case,
[i]f the plan administrator (1) encourages the applicant to apply for Social Security disability payments; (2) financially benefits from the applicant’s receipt of Social Security; and then (3) fails to explain why it is taking a position different from the SSA on the question of disability, the reviewing court should weigh this in favor of a finding that the decision was arbitrary and capricious.
Bennett v. Kemper Nat’l Servs., 514 F.3d 547, 554 (6th Cir.2008).
Here, the terms of Sun Life’s plan required that DeLisle apply for Social Security Disability benefits and to appeal the denial “to all administrative levels Sun Life deems necessary.” So, she was required, not merely encouraged to apply. Sun Life also received a financial offset from future liability based on DeLisle receiving Social Security Disability benefits. And none of the three denial letters Sun Life sent DeLisle mentions her Social Security determination as a factor that Sun Life considered in reaching its own determination. Only one of Sun Life’s file reviewers even acknowledged in his report that he was aware of the Social Security determination. Even though Sun Life did not have the opinion accompanying the notice of award, it still was well aware of the uniform federal standard that applies to Social Security claims. Sun Life’s silence here does not make its denial arbitrary per se, but is among those “serious concerns” that, “taken with some degree of conflicting interests,” provide a proper basis for concluding that the administrator abused its discretion. See Glenn, 128 S.Ct. at 2352.
C. Quality and Quantity of Medical Evidence
In considering the medical evidence, we first address Sun Life’s argument that the district court impermissibly shifted the burden of proof to Sun Life to disprove DeLisle’s disability as of April 17. In support of its argument, Sun Life points to the district court’s observation that Sun Life’s file reviewers “cannot state conclusively that [DeLisle] was not disabled on April 17.” Delisle, 2007 WL 3013075 at *10. While Sun Life is correct that DeLi-sle carries the burden of proving her disability, the district court’s observation must be considered in its proper context, which was at the conclusion of its survey of the medical evidence submitted by both sides. In context, it becomes clear that the district court’s observation is properly characterized as an evaluation of the quality of the reasoning process that Sun Life undertook and was not a burden shift. Notably, the district court’s opinion did not rely on any failure by Sun Life to disprove DeLisle’s disability. Rather, it concluded that “given the [Sun Life] consultants’ concessions, the SSA determination of total disability, and the inherent conflict of interest, the major factors to be considered fall in favor of Plaintiff.” Id.
A court’s review for arbitrary and capricious decision-making “inherently includes some review of the quality and quantity of the medical evidence and the opinions on both sides of the issues.” McDonald, 347 F.3d at 172. The district court set forth general synopses from both sides’ medical evidence, including six opinions submitted by DeLisle and six by Sun Life. Delisle, 2007 WL 3013075 at *8-9.
*447DeLisle’s therapy notes and medical assessments in the months leading up to her firing include complaints of anxiety and depression. Her primary care physician, Dr. Rudy noted that she was coping with “tremors,” “fatigue,” “spasms,” and “double-vision.” Her neurosurgeon, Dr. Ho, who treated her on a monthly basis since January 1999 had prescribed a full neck brace, noted an increase in neck pain in December 2001, and recorded his recommendation, “as soon as possible, after the holidays, she take some time to cut back on working and be off of her feet.” That the medical providers who were treating DeLisle before her firing did not explicitly include in their medical opinions statements indicating that she was disabled is of little consequence because DeLisle affirmatively wanted to work through her ailments.
Moreover, her treating physicians from that time period — as well as other physicians who began treating her after she stopped working — reviewed her medical records and concluded, among other diagnoses that she was suffering from “major depressive disorder and anxiety disorder,” “memory retrogression,” “significant loss of psychological, physiological, personal and social adjustments of severe limitation.” In an interview with Sun Life, Dr. Ho explained that “although the disability date is 4/17/2002, the period of disability could have been long before that.”
Sun Life’s experts, including Dr. O’Connor, Dr. Himber, Dr. Pies and Dr. Sarni, largely agreed with the diagnoses, but discounted the effect they had on De-Lisle’s ability to work. In addition, Dr. O’Connor and Dr. Johnston noted that De-Lisle did not complain of neuropsychological or cognitive impairments until after she was fired. And Dr. Corzatt pointed out that Dr. Ho had not imposed restrictions on DeLisle’s ability to work. Although Sun Life does not owe special deference to the opinion of DeLisle’s treating physicians, see Black & Decker, 538 U.S. at 834, 123 S.Ct. 1965, it may not arbitrarily ignore them. Glenn, 461 F.3d at 671. Notably, Sun Life’s medical professionals found support in DeLisle’s medical records for the disorders described above, but discredited the date of disability on the basis that the records did not demonstrate a change in condition around April 17. None of Sun Life’s reviewers confront Dr. Ho’s characterization of the “progressive nature of her medical conditions,” which would not manifest itself by a “significant change” on a particular date. And, as noted above, it is unclear whether Sun Life’s file reviewers knew of the Social Security determination of total disability, or were unfairly swayed by communications from Sun Life’s in-house attorney. On this record, we find that the entirety of the medical evidence available to Sun Life was not reviewed in a “deliberate” or “principled” fashion, which is a factor suggesting that Sun Life’s ultimate determination was arbitrary.
D. Reliance on Non-Medical Evidence
Finally, we consider Sun Life’s reliance on non-medical evidence, specifically the fact DeLisle continued to work until she was fired, and only several months later claimed to be disabled. This Court recently considered a similar case where an employee stopped working, but later claimed that he was disabled on his last day of work. Rochow v. Life Ins. Co. of N. Am., 482 F.3d 860 (6th Cir.2007). In Rochow, the claimant was fired in January because he could not perform “material duties” of his job after he began experiencing short-term memory loss, occasional chills, sporadic sweating and stress. He did not file a claim for disability benefits with his former employer until December, nearly elev*448en months after his disability coverage had lapsed. Nevertheless, he argued that he was disabled on the last day he was working for his employer. In affirming the district court’s decision that the denial of benefits was arbitrary and capricious, this Court observed that “there is no ‘logical incompatibility between working full time and being disabled from working full time.’ ” Id. at 865 (quoting Hawkins v. First Union Corp. Long-Term Disability Plan, 326 F.3d 914, 918 (7th Cir.2003)). The same is true here.
In further support of its denial, Sun Life points out that Cushing’s treatment notes state that DeLisle reported she was fired “based on personality issues vs. job performance.” But this report does not foreclose the possibility that DeLisle was nonetheless disabled on the day she was fired or that the firing was related to her sickness or injury. Sun Life also says that DeLisle’s two-week employment elsewhere following her firing is evidence she was not disabled on April 17. It is not reasonable to conclude from a brief, ultimately unsuccessful attempt to work, that DeLisle was not disabled from her job at Krandall on the day she was fired. Finally, DeLisle’s application for unemployment benefits and listing “lack of work” as her reason for Krandall firing her does not, in the face of the substantial medical evidence indicating that she was suffering from a traumatic head injury and major depression at the time, amount to persuasive evidence that DeLisle was able to complete the duties of her job on April 17. And this is especially true where the progressive nature of her diagnoses may have made it difficult for her to acknowledge her disability.
CONCLUSION
Even under the highly deferential standard of review, we cannot uphold Sun Life’s denial of DeLisle’s long-term disability benefits. The conflict of interest, improper communication from Sun Life’s attorneys to file reviewers, and failure to acknowledge the Social Security disability determination in the face of substantial medical evidence indicating the progressive nature of DeLisle’s disability show that Sun Life did not engage in a principled, deliberative reasoning process. We therefore conclude that Sun Life’s decision to deny long-term benefits was arbitrary and capricious. Accordingly, we AFFIRM the judgment of the district court.
DISSENT