The duties of a hearing aid dispenser involve assisting people with hearing loss. To ensure the right product, they may administer an ear exam or perform audiometric testing to measure a person’s hearing loss. A hearing aid dispenser usually works for a business that focuses on fitting the product for a specific patient’s ear. Other responsibilities include helping customers learn more about their options in order to increase sales and ensure the product they choose will significantly benefit their reduced hearing. A professional license is typically required, but qualifications vary by state.