Hawaii Revised Statutes Division 1. Government § 26-39

Except as otherwise provided by this chapter and with the approval of the governor, the head of a department may establish or abolish any subordinate office or position, transfer officers and employees between positions, appoint and remove any subordinate, and change the duties, titles, and compensation of offices and positions as is deemed necessary by the head of the department for the efficient functioning of the department, subject to the limitations of available appropriations and of the provisions of chapter 76.

All officers and employees within a department shall be under the supervision, direction and control of the head of the department, except as otherwise provided by this chapter.