Many organizations today, employ people of different ethnicity, culture and have subsidiaries in various parts of the world. Managers now have to find ways to manage effectively these variables to ensure the goals of the organization are accomplished. Managers get work done through others; therefore they need to have excellent interpersonal skills. As well as plan, organize, control resources and make good decisions on behave of the organization. This is where Organizational Behaviour is vital; it plays a significant role in managing the workforce. Organizational Behaviour investigates the impact that individuals, groups, and structure have on behaviour within the organization, and it applies that knowledge to make organizations work more effectively (Robbins &Judge, 2013). Managers have to interact with employees frequently and must be able to predict, evaluate and to some extent modify behaviours of employees. Hence, managers need to have a sound understanding about organizational behaviour so they can effectively manage individuals, groups and the interpersonal dynamics of the workplace.
Organizational behaviour is a combination of several disciplines, psychology, social psychology, sociology and anthropology. The blend of these disciplines gives managers a deeper understanding of how the behaviour of individual, groups and structure can affect the organization as a whole. Mangers use this information to improve the productivity and efficiency of the organization, by capitalizing on the strengths of employees to achieve the goals of the organization. Therefore, organizational behaviour helps managers improve their skills, so they are better able to analyze employees and understand how they function within their departments. Organizational behaviour uses two approaches the systematic approach and the evidence – based management approach. The systematic approach is where managerial decision