The document discusses why managers should understand organizational behavior (OB). It states that OB emphasizes practical application of topics like motivation, leadership, and teamwork which are essential for managers. Understanding OB allows managers to better predict employee behavior, motivate subordinates, and make effective use of human resources. However, overemphasis on OB can have limitations like behavioral bias where employee satisfaction is prioritized over organizational goals. OB knowledge must be applied ethically without manipulating employees.