Section 378-34 - Proceeding and hearing on complaint(a) After the filing of any complaint, the department of labor and industrial relations shall serve a copy of the complaint upon the employer charged. Service may be by delivery to the employer or by mail. The employer may file an answer to the complaint.(b) A hearing on the complaint shall be held by the department in conformance with chapter 91.L 1967, c 22, pt of §1; HRS § 378-34