Holly is the day supervisor who works from 7:00 AM to 4:00 PM. Kim is the evening supervisor who works from 2:00 PM to 11:00 PM. Sarah is a transcriptionist who works from 10:00 AM to 7:00 PM, which overlaps the day and evening shifts. Sarah asked Holly, the day supervisor, if she could leave early for personal reasons. Holly said Sarah could leave early if Kim, the evening supervisor, agrees. Identify which theory of management this situation violates? span of control formal theory of authority specialization of labor unity of command