Upon the written petition of either the employer or the employee setting forth in ordinary and concise language the facts and questions in dispute, the director of labor and industries shall, in person or by his or her duly authorized deputy, and is hereby authorized to hear and determine all disputes concerning wages earned at seasonal labor, and allow or reject deductions made from such wages for moneys advanced or supplies furnished before the wages are earned for money paid or supplies furnished during the season or for money paid to third persons upon the written order of the employee.