In any hearing, the board or the hearings officer shall not be bound by technical rules of evidence. However, no hearsay evidence shall be admitted or considered; and all irrelevant, immaterial, or unduly repetitious evidence shall be excluded. Rules of privilege recognized by law shall be given effect. Documentary evidence may be received in the form of copies or excerpts, if the original is not readily available; provided that upon request parties shall be given an opportunity to compare the copy with the original.
Haw. Code R. § 12-41-26