Hawaii Revised Statutes Division 1. Government § 302A-426

(a) The department, after notice and opportunity for a hearing, may suspend or revoke a license at any time when, in the judgment of the department, the licensee is not complying with section 302A-425 or the rules that may be adopted by the board. The notice of hearing shall be served personally or sent to the licensee by registered or certified mail with return receipt at the licensee's last known address.

(b) Notice of suspension or revocation shall be served personally upon the licensee or sent to the licensee by registered or certified mail with return receipt, and the licensee shall forward the licensee's license at once to the department, and cease at once to operate the private trade, vocational, or technical school.

(c) All proceedings shall be subject to chapter 91.