The Department of Commerce staff may investigate on the request of any person or on its own initiative the acts of the rating association, an insurer, or an agent that are subject to provisions of chapter 79 and may make findings and recommendations that the commissioner issue an order requiring compliance with the provisions thereof. The proposed findings and recommended order shall be served on all affected parties at the same time that the staff transmits its findings and recommendations to the commissioner. Any party adversely affected by the proposed findings and recommended order may request that a hearing be held concerning the issues raised therein within 15 days after service of the findings and recommended order. This hearing shall be conducted as a contested case pursuant to sections 14.001 to 14.69. If a hearing is not requested within the time specified in this section, the proposed findings and recommended order may be adopted by the commissioner as a final order.