A management system of the present disclosure includes: an operation information acquisition section that acquires information on an operation time from a start of operation to an end of the operation of a driver, a nap determination section that performs determination of a quality of a nap of the driver based on heart-rate frequency distribution during sleep outside the operation time of the driver, heart-rate frequency distribution during awakening of the driver, and a heart rate during the nap of the driver within the operation time; and a presentation section that presents a result of the determination.