Haw. Code R. § 12-46-57
When no written exceptions have been filed, the commission, in complaints alleging violations of chapters 368, 378, or 489, HRS, shall issue a written final decision and order, either adopting or modifying or reversing, in whole or in part, the hearings examiner's decision, within a reasonable time after the hearings examiner's decision has been filed. The commission shall issue a written final decision and order in complaints alleging violations of chapter 515, HRS, within one year of the date of the filing of the complaint, unless the commission finds it impracticable to do so. In complaints alleging violations of chapter 515, HRS, complainants and respondents shall be provided written notice if the commission cannot issue a written final decision and order within one year of the date of the filing of the complaint. The commission shall state with specificity in the final decision the reasons for any modification or reversal, in whole or in part, of the hearings examiner's decision
Haw. Code R. § 12-46-57