Hawaii Revised Statutes Division 1. Government § 89-6.5

(a) The board shall adopt rules pursuant to chapter 91 establishing criteria and procedures for the establishment of a new bargaining unit. The rules shall include a requirement that any employee who is not included in an existing bargaining unit under section 89-6(a) and not excluded under section 89-6(f), employer, or exclusive representative proposing to establish a new bargaining unit petition the board and submit an application along with any relevant supporting documents. Any employee who is not included in an existing bargaining unit under section 89-6(a) and not excluded under section 89-6(f), employer, or executive representative may petition the board to determine the appropriateness of a new bargaining unit.

(b) In determining the appropriateness of a new bargaining unit, the board shall consider, at a minimum:

provided that notwithstanding bargaining unit (8), no bargaining unit shall be established or approved for purposes of collective bargaining that includes both professional and non-professional employees.

(c) Upon making a determination of whether or not to approve a petition to establish a new bargaining unit, the board shall issue a decision and order. If the petition is approved, the board shall submit a report to the legislature, including proposed legislation for the legislature to consider and enact the establishment of the new bargaining unit, which shall be accompanied by the decision and order issued by the board.