Neb. Rev. Stat. § 48-415

Any person in interest, or his duly authorized agent, may file a petition with the Commissioner of Labor for a review of the validity or reasonableness of any code, order, rule or standard made under the provisions of section 48-412 . The commissioner shall, as soon as practicable thereafter, hold a hearing to determine the issues raised, and shall give ample notice of the time and place of such hearing to the petitioner, and to such other interested persons as the commissioner may determine.