Haw. Rev. Stat. § 658A-12
(a) Before accepting appointment, an individual who is requested to serve as an arbitrator, after making a reasonable inquiry, shall disclose to all parties to the agreement to arbitrate and arbitration proceeding and to any other arbitrators any known facts that a reasonable person would consider likely to affect the impartiality of the arbitrator in the arbitration proceeding, including:
[L 2001, c 265, pt of §1; am L 2017, c 187, §1]
Although disclosure of de minimis interests or relationships is not required, arbitrators must at the outset disclose, then continually disclose throughout the course of an arbitration proceeding, any known facts that a reasonable person would consider likely to affect the arbitrator's impartiality. 136 H. 29, 358 P.3d 1 (2015).
"Counsel" does not include all attorneys in the law firm of an attorney representing a party to an arbitration. However, depending on the circumstances, the facts that a reasonable person would consider likely to affect an arbitrator's impartiality, thereby requiring disclosure by the arbitrator, could include the arbitrator's relationships with other attorneys within a law firm of counsel representing a party to the arbitration. 136 H. 29, 358 P.3d 1 (2015).
Where arbitrator's connections to a law firm that previously employed arbitrator, a witness who testified in a prior proceeding before arbitrator, and an attorney who previously appeared in two cases before arbitrator were called into question as relationships evidencing partiality requiring disclosure under this section, the circuit court did not clearly err in determining that these were not "relationships" for the purposes of this section requiring vacatur under §658A-23(a)(2) because: (1) the mere fact that an arbitrator has observed a witness in a prior proceeding and therefore may have "had an opportunity to evaluate the person and form an opinion as to the person's credibility[,]" without more, is not a "relationship" that requires disclosure; (2) there was no actual direct connection between the law firm and the parties, counsel, witnesses, and arbitrator in the present proceeding; and (3) appearance as expert witness of attorney who previously appeared in two cases before arbitrator was not a "relationship" that created a reasonable impression of impartiality. 140 H. 75, 398 P.3d 664 (2017).