As a department manager, your duties are to supervise a specific department in a retail store. For example, you may work as the manager of the deli in a grocery store or the manager of children’s clothing in a department store. The title of department manager also applies to other industries, such as banking, farming, human resources, and manufacturing, but your responsibilities are similar. You order and manage inventory, oversee other staff members, help hire and train new staff at the store, help sales staff to meet department sales goals, and provide excellent customer service.