Abstract: A method performed by a terminal for managing a work schedule of each employee automatically according to an embodiment of the present disclosure includes reading past work history data for a plurality of weeks of a corresponding employee, predicting total working hours of a following week by summing average weekly working hours and trend adjustment values for the plurality of weeks, allocating the predicted total working hours of the following week for each day of the week based on a time distribution for each day of the week, and allocating the allocated time for each day of the week based on a distribution for each working hour.