Haw. Code R. § 3-161-39
All hearings shall be conducted pursuant to chapter 91, Hawaii Revised Statutes, and this chapter. All hearings shall be heard before the commission or a duly designated hearings officer. All parties shall be afforded full opportunity to present evidence and argument on all issues involved. The hearing shall be at the time and place set forth in the notice of hearing, but that time and place may be continued from day to day or adjourned to a later day or to a different place without notice other than the announcement thereof at the hearing. The commission or hearings officer, if there is no dispute as to the facts involved in a particular matter, may permit the parties to proceed by memoranda of law in lieu of a hearing unless the procedure would unduly burden any party or is otherwise not conducive to the ends of justice.
Haw. Code R. § 3-161-39