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Evident partiality standards are designed to enforce the parties’ expectations of neutrality without significantly undermining the finality of arbitration awards. This part II of our Businesspersons’ FAQ guide on evident partiality explains why that is so.
Evident Partiality Standards and their Source
The subject of what constitutes neutrality for judicial decision makers has long been the subject case law and statutes. Unlike the standards for disqualifying judges, which are set forth for federal judges in 28 U.S.C. § 455, arbitrator neutrality standards in Federal Arbitration Act cases are not expressly set forth by statute—FAA Section 10(a)(2) merely authorizes a court to vacate an award if an arbitrator is “guilty” of “evident partiality.” 9 U.S.C. § 10(a)(2).
While the FAA Section 10(a)(2) deems “evident partiality” a ground for vacating an award, the FAA does not define the term or establish a baseline impartiality standard that must be met by every arbitrator. This contrasts starkly with the English Arbitration Act 1996, which imposes on all arbitrators effectively the same standards of impartiality applicable to English judges. See, generally, Arbitration Act 1996 § 33(1).
What constitutes “evident partiality” under the FAA is a question that the federal courts have answered in various ways over the past several decades. In general, evident partiality is assessed according to a sliding scale of sorts, depending on the parties’ agreement and the surrounding circumstances. That should come as no surprise since the whole point of the FAA is to enforce the parties’ agreement to arbitrate according to its terms. See, e.g., Stolt-Nielsen S.A. v. Animalfeeds Int’l, 559 U.S. 662 (2010) (“[W]e have said on numerous occasions that the central or primary purpose of the FAA is to ensure that private agreements to arbitrate are enforced according to their terms.”) (citations and quotations omitted).
What is the Standard in the Second Circuit?
The U.S. Circuit Courts of Appeals have adopted various evident partiality standards, which are based principally on differing interpretations of the U.S. Supreme Court’s 1968 decision in Commonwealth Coatings Corp. v. Continental Cas. Co., 393 U.S. 145 (1968), a case that we will discuss in detail in an upcoming segment dealing with arbitrator disclosure. Rather than engage in a broad survey and parsing of the various evident partiality standards adopted by various federal courts, let’s focus on the so-called “reasonable person” evident partiality standard that has been adopted by the Second Circuit and a number of other courts.
Under Second Circuit authority an award may be vacated “if a reasonable person would have to conclude” that an arbitrator was biased against one party or partial in favor of another. See Morelite v. N.Y.C. Dist. Council Carpenters, 748 F.2d 79, 83-84 (2d Cir. 1984); National Football League Mgmt. Council v. National Football League Players Ass’n, 820 F.3d 527, 549 (2d Cir. 2016) (“NFL Council”); Scandinavian Reinsurance Co. v. Saint Paul Fire and Marine Ins. Co., 668 F.3d at 64; Applied Indus. Materials Corp. v. Ovalar, 492 F.3d 132, 137 (2d Cir. 2007).
The Second Circuit’s “reasonable person” standard has been construed and applied by many courts since the Second Circuit’s 1984 decision in Morelite, and has been adopted by the First, Third, Fourth, and Sixth Circuits. See, e.g., UBS Fin. Servs. v. Asociación de Empleados del Estado Libre Asociado de P.R., 997 F.3d 15, 17-20 (1st Cir. 2021) (citing cases); Freeman v. Pittsburgh Glass Works, LLC, 709 F.3d 240, 253-54 (3d Cir. 2013) (citing cases); ANR Coal Co. v. Cogentrix of North Carolina, Inc., 173 F.3d 493, 500-01 (4th Cir. 1999); Apperson v. Fleet Carrier Corp., 879 F.2d 1344, 1358 (6th Cir. 1989).
The standard does not require a showing that an arbitrator was actually biased against one party or partial toward another, only that a reasonable person would have to conclude that was so. A determination that a reasonable person would have to conclude that an arbitrator was financially or personally interested in the outcome, or not independent, would likewise satisfy the standard.
Absent disclosure and a waiver, an arbitrator should be free from any relationships with the parties that a reasonable person would have to conclude would materially compromise his or her ability to decide the case in an impartial manner. See Morelite, 748 F.2d at 84-85 (father-son relationship); Scandinavian Re, 668 F.3d at 72 (“Among the circumstances under which the evident-partiality standard is likely to be met are those in which an arbitrator fails to disclose a relationship or interest that is strongly suggestive of bias in favor of one of the parties”).
Evident Partiality Standards versus Judicial Impartiality Standards
In the Second Circuit and elsewhere, the standard for disqualifying a judge for partiality or bias is less demanding than that required to vacate an award for evident partiality. Morelite, 748 F.2d at 83; Scandinavian Re, 668 F.3d at 72; see, e.g, Merit Ins. Co. v. Leatherby Ins. Co., 714 F.2d 673, 681 (7th Cir. 1983). While in the Second Circuit one must demonstrate that a “reasonable person would have to conclude” that an arbitrator is biased against or partial to a party, Morelite, 748 F.2d at 83; Scandinavian Re, 668 F.3d at 72, federal judges are disqualified for bias or partiality “in any proceeding in which [their] impartiality might reasonably be questioned.” See 28 U.S.C. § 455(a).
Though neither the judicial nor the arbitral standard requires a challenger to establish “actual bias,” see Morelite, 748 F.2d at 84, and even though demonstrating judicial partiality or bias is difficult to do, showing that a person “might reasonably” “question” a decisionmaker’s impartiality is a considerably less daunting task than showing that the same “reasonable” person “would have to conclude” that an arbitrator was partial or biased.
The Second Circuit also imposes a heightened evidentiary standard on evident partiality claims. Like fraud claims, they must be established by “clear and convincing evidence.” See NFL Council, 820 F.3d at 548; Kolel Beth Yechiel Mechil of Tartikov, Inc. v. YLL Irrevocable Tr., 729 F.3d 99, 106 (2d Cir. 2013).
The particularly demanding standard for establishing evident partiality of a neutral arbitrator certainly serves to make arbitration awards less susceptible to challenge, thereby increasing the odds that an arbitration award and its confirmation will be the last step in the dispute resolution process, not a starting point for intensive post-award litigation and further arbitration.
It is at least ostensibly designed to reflect realistically what reasonable expectations of neutrality a party who agrees to arbitrate may have. “Parties agree to arbitrate precisely because they prefer a tribunal with expertise regarding the particular subject matter of their dispute,” said the late Circuit Judge Irving R. Kaufman, speaking for the Court in Morelite, and “[f]amiliarity with a discipline often comes at the expense of complete impartiality.” Morelite, 748 F.2d at 83:
Some commercial fields are quite narrow, and a given expert may be expected to have formed strong views on certain topics, published articles in the field and so forth. Moreover, specific areas tend to breed tightly knit professional communities. Key members are known to one another, and in fact may work with, or for, one another, from time to time. As this Court has noted, ‘[e]xpertise in an industry is accompanied by exposure, in ways large and small, to those engaged in it….’ . . . . [T]o disqualify any arbitrator who had professional dealings with one of the parties (to say nothing of a social acquaintanceship) would make it impossible, in some circumstances, to find a qualified arbitrator at all. Morelite, 748 F.2d at 83 (quoting Andros Compania Maritima, S.A. v. Marc Rich & Co., 579 F.2d 691, 701 (2d Cir.1978); other citations omitted).
By not requiring neutrals to comply with judicial standards of partiality courts balance the parties’ expectations with the realities of the marketplace. Particularly in industry arbitration, sought-after arbitrators often have many years of industry experience, which may inform their perspectives on issues important to the industry. Intra-industry issues can pit one segment of the industry against another, and a qualified neutral may have experience in one or both segments. Some degree of institutional predisposition comes with the territory and does not necessarily disqualify the neutral. And as industry insiders, arbitrators may know the lawyers and the parties socially and professionally, but those relationships generally do not disqualify the arbitrator from service.
These practical realities demand what Judge Posner aptly termed a “tradeoff between impartiality and expertise” – the parties bargained for dispute resolution by an industry expert and the benefit of that expertise carries with it the burdens of greater entanglement with the parties, the industry and the issues. Indeed, if courts required the industry arbitrators — or even commercial arbitrators without an industry-specific focus — to shed or be free from this proverbial baggage, then qualified umpire candidates would be hard to come by. See Leatherby, 714 F.2d at 679 (“people who arbitrate do so because they prefer a tribunal knowledgeable about the subject matter of their dispute to a generalist court with its austere impartiality but limited knowledge of the subject matter.”)
Another reason the law does not hold neutral arbitrators to the same standards as judges is because arbitration is voluntary. See Leatherby, 714 F.2d at 679. “Courts are coercive, not voluntary, agencies,” and “fear of government oppression” has, over time, prompted the creation of “a judicial system in which impartiality is prized above expertise.” Leatherby, 714 F.2d at 679. Persons elect to submit their disputes to arbitration “because they prefer a tribunal knowledgeable about the subject matter of their dispute to a generalist court with its austere impartiality but limited knowledge of subject matter.” Leatherby, 714 F.2d at 679.
Evident Partiality Standards in Tripartite Arbitration
An arbitration agreement providing for a single arbitrator is ordinarily presumed to provide for arbitration by a neutral arbitrator, whose neutrality is assessed under the prevailing evident partiality standard. But arbitration agreements often call not for single arbitrators, who are presumed to be neutral, but three-person (a/k/a “tripartite”) panels.
In reinsurance, and certain other industry arbitrations, for example, the agreement typically requires each party to appoint an arbitrator and for the party-appointed arbitrators to attempt to agree on an umpire or select one by lot drawing, coin toss, Dow Jones pick or like tie-breaking procedure. Unless the arbitration agreement provides otherwise, courts generally presume that the parties intended their appointed arbitrators to act as advocates of a sort:
[I]n the main party-appointed arbitrators are supposed to be advocates. In labor arbitration a union may name as its arbitrator the business manager of the local union, and the employer its vice-president for labor relations. Yet no one believes that the predictable loyalty of these designees spoils the award. (Emphasis in original; citations omitted). Sphere Drake Ins. Co. v. All American Life Ins. Co., 307 F.3d 617, 620 (7th Cir. 2002); Certain Underwriting Members of Lloyd’s of London v. Florida Dep’t of Fin. Servs., 892 F.3d 501, 508 (2d Cir. 2018): The principles and circumstances that counsel tolerance of certain undisclosed relationships between arbitrator and litigant are even more indulgent of party-appointed arbitrators, who are expected to serve as de facto advocates . . . The ethos of neutrality that informs the selection of a neutral arbitrator to a tripartite panel does not animate the selection and qualification of arbitrators appointed by the parties. Id. (citations and quotations omitted).
The tripartite panel structure is supposed to provide the best of two worlds: (a) two experienced and knowledgeable industry professionals, each acting as an advocate of sorts on behalf of his or her appointing party; and (b) an equally experienced and knowledgeable umpire, who either casts the tie-breaking vote or brokers a consensus.
An industry’s general acceptance of an advocacy role for party-appointed arbitrators is sometimes evidenced by a practice of the parties authorizing ex parte contact between party-appointed arbitrators and their appointing parties (which may be subject to an agreed cut-off point, such as the submission of pre-hearing briefs).
In the Second Circuit and a number of other jurisdictions, evident partiality standards are generally designed to apply to neutral arbitrators, but not to party-appointed arbitrators, which the parties did not intend to be neutral. Certain Underwriting Members, 892 F.3d at 509-10. According to the Second Circuit, absent arbitrator qualification language to the contrary, “[e]xpecting of party-appointed arbitrators the same level of institutional impartiality applicable to neutrals would impair the process of self-governing dispute resolution.” 892 F.3d at 510.
The Second Circuit, however, does not hold that there are no relationships or other facts that may establish evident partiality of a non-neutral party-appointed arbitrator. An appointed arbitrator’s violation of a contractual requirement concerning partiality or bias, such as a requirement of “disinterestedness,” may establish evident partiality. Certain Underwriting Members, 892 F.3d at 510. Thus, if an arbitration agreement requires a arbitrator to be “disinterested,” the qualification “would be breached[,]” and evident partiality established, “if the party-appointed arbitrator had a personal or financial stake in the outcome of the arbitration.” 892 F.3d at 510.
In addition, the Second Circuit may vacate an award for a party-appointed arbitrator’s evident partiality “if the party opposing the award can show that the party-appointed arbitrator’s partiality had a prejudicial effect on the award.” Certain Underwriting Members, 892 F.3d at 510-11 (citations and quotations omitted). In theory at least, such prejudice might, in an appropriate case, be established where the record shows that the neutral wanted and attempted to obtain information from a party-appointed arbitration concerning what to make of the party-appointed arbitrator’s arguments and the party-appointed arbitrator provided misleading or false information in response. Cf. Sphere Drake, 307 F.3d at 623 (“[W]e have not been given any reason to think that umpire Huggins wanted more information from Jacks in order to know what to make of Jacks’ arguments during the panel’s deliberations.”)
Other courts say that evident partiality is ordinarily not a ground for disqualifying a partisan arbitrator, evident partiality is available only if it prejudices the challenging party, or the parties’ diminished expectations of party-appointed arbitrator impartiality should be considered as part of the evident partiality calculus. See, generally, Sphere Drake, 307 F.3d at 620; 617, 620 (7th Cir. 2002) (“evident partiality” ground can be waived by consent); Winfrey v. Simmons Foods, Inc., 495 F.3d 549, 552 (8th Cir. 2007) (requiring a showing of prejudice); Nationwide Ins. Co. v. Home Ins. Co., 429 F.3d 640, 645-46 & 648-49 (6th Cir. 2005) (figuring into the mix the parties’ diminished expectations of impartiality and suggesting that undisclosed social or business relationship may establish evident partiality if it is related “to the subject matter of the” arbitration.)
Although courts will (absent contract language to the contrary) ordinarily assume that the parties intended party-appointed arbitrators to play an advocacy role, there may be disagreement within the industry or among particular parties concerning the degree of partiality permissible. For example, there are some who believe that robust advocacy is appropriate, while others believe the party-appointed arbitrator should strive to give the appointing party the benefit of the doubt, but ultimately decide the matter according to the evidence and applicable law, custom and practice. Others may have different views.
The upshot is that the line between the acceptable and unacceptable is both difficult to draw and blurry. To at least some extent checks on rampant partisanship are imposed by economic considerations: Party-appointed arbitrators that overstep what other panel members perceive to be proper ethical boundaries risk diminished credibility, influence, and effectiveness, which in turn, may result in fewer appointments. The use of partisan arbitrators, which continues in certain types of industry arbitration, has fallen out of favor in commercial arbitration in general. Rule 18 of the American Arbitration Association’s Commercial Arbitration Rules and Mediation Procedures (amended and effective October 1, 2013) (“AAA Commercial Rules”) reverses the presumption that party-appointed arbitrators should be non-neutral. Rule 18(a) says “Any arbitrator shall be impartial and independent and shall perform his or her duties with diligence and in good faith, and shall be subject to disqualification for:”
(i) partiality or lack of independence, (ii) inability or refusal to perform his or her duties with diligence and in good faith, and (iii) any grounds for disqualification provided by applicable law. AAA Commercial Rules R. 18(a).
Rule 18(b) further provides that “The parties may agree in writing. . . that arbitrators directly appointed by a party pursuant to Section R-13 shall be nonneutral, in which case such arbitrators need not be impartial or independent and shall not be subject to disqualification for partiality or lack of independence.” AAA Commercial Rules R. 18(b).
The AAA rules vest in the AAA the power to “determine whether the arbitrator should be disqualified under the grounds set out above, and shall inform the parties of its decision, which decision shall be conclusive.” AAA Commercial Rules R. 18(c).
Rule 7(c) of the JAMS Comprehensive Arbitration Rules and Procedures likewise reverses the presumption of non-neutrality: “Where the Parties have agreed that each Party is to name one Arbitrator, the Arbitrators so named shall be neutral and independent of the appointing Party, unless the Parties have agreed that they shall be non-neutral.” JAMS Comprehensive Arbitration Rules and Procedures Effective June 1, 2021 (the “JAMS Rules”) Rule 7(c).
Reversal of the presumption of party-appointed arbitrator non-neutrality are common in arbitration rules (including in international arbitration rules), and where parties incorporate by reference arbitration rules into their contract, those rules will ordinarily be deemed a part of the contract, requiring party-appointed arbitrators to be neutral. See Idea Nuova, Inc. v. GM Licensing Group, Inc., 617 F.3d 177, 180-82 (2d Cir. 2010) (“An agreement to submit commercial disputes to ‘AAA arbitration for resolution’ is properly construed to agree to arbitration pursuant to the AAA Commercial Arbitration Rules and to incorporate those rules into the Agreement.”)
Tripartite Arbitration: Umpires or Neutral Arbitrators
Umpires and neutrals are held to higher standards of impartiality than partisan party-appointed arbitrators, and it is to them that ordinary standards of evident partiality apply, such as the Second Circuit’s “reasonable person” standard. Parties expect them to be fair, objective, open-minded in deliberations and not predisposed to rule in favor of either party before hearing the evidence. They are supposed to be impartial, but, as previously discussed, they are nevertheless not held to the same rigorous, statutory standards of impartiality applicable to United States federal judges. See Sphere Drake, 307 F.3d at 621; Morelite, 748 F.2d at 83; see, generally, 28 U.S.C. § 455 (disqualification standards for federal judges). The next instalment will discuss arbitrator disclosure procedures and requirements, which are designed to implement and enforce evident partiality standards; and examples of what does and does not constitute evident partiality.
Contacting the Author
What constitutes evident partiality and under what circumstances is a controversial and sometimes elusive topic. The author has written about it extensively over the years, including here, here, here, and here, as well as in other publications. The author has briefed, argued, or both, a number of U.S. Courts of Appeals and federal district court cases on the subject over the years, including, among others, Certain Underwriting Members of Lloyds of London v. State of Florida, Dep’t of Fin. Serv., 892 F.3d 501 (2018); and Nationwide Mutual Ins. Co. v. Home Ins. Co., 429 F.3d 640 (2005). Both of these important cases are cited in this article.
If you have any questions about this article, arbitration, arbitration-law, arbitration-related litigation, or the services that the Loree Law Firm offers, then please contact the author, Philip Loree Jr., at (516) 941-6094 or at PJL1@LoreeLawFirm.com.
Philip J. Loree Jr. has more than 30 years of experience handling matters arising under the Federal Arbitration Act and in representing a wide variety of clients in arbitration, litigation, and arbitration-related litigation. He is licensed to practice law in New York and before certain federal district and federal appellate courts.
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Part II of our Businesspersons’ Federal Arbitration Act (“FAA”) FAQ guide on evident partiality discussed evident partiality standards and how they are designed to enforce the parties’ expectations of neutrality without significantly undermining the finality of arbitration awards. (See Part II.) This Part III discusses arbitrator disclosure procedures and requirements and how, as a matter of arbitration procedure, they implement evident partiality standards and facilitate judicial determination of whether an arbitrator is guilty of evident partiality. It also provides a list of certain U.S. Circuit Court of Appeals cases that have either held that an arbitrator was guilty of evident partiality or remanded to the district court for an evidentiary hearing on evident partiality.
Section 10(a)(2) of the Federal Arbitration Act authorizes courts to vacate awards “where there was evident partiality or corruption in the arbitrators, or either of them. . . .” 9 U.S.C. 10(a)(2). The next few instalments will focus on evident partiality, a later one on corruption.
Section 10(a)(2) of the Federal Arbitration Act (the “FAA”) authorizes courts to vacate awards “where there was evident partiality or corruption in the arbitrators, or either of them. . . .” 9 U.S.C. 10(a)(2). The next few instalments will focus on arbitrator neutrality and evident partiality, a later one on corruption. What constitutes evident partiality and under what circumstances is a controversial and sometimes elusive topic. We’ve written about it extensively over the years, including 
Section 10(a)(1) of the Federal Arbitration Act authorizes courts to vacate awards where “the award was procured by corruption, fraud, or undue means. . . .” 9 U.S.C. § 10(a)(1). Cases vacating awards on Section 10(a)(1) grounds are rare, presumably because the circumstances that would trigger relief are relatively rare.
We’ve seen how the Federal Arbitration Act authorizes confirmation and enforcement of various domestic and foreign arbitration awards falling within its scope. (See 
