Organizations: social inventions for accomplishing common goals through group effort. Essential characteristic is coordinated presence of people rather than things. Virtually all organizations have a common goal. In order to survive and adapt people have to: Carry out basic work reliably (in terms of productivity, quality & service) Willing to continuously learn & upgrade knowledge/skills. Be flexible and innovative based on group effort o organizations depend on interaction & coordination among people. Organizational behaviour: attitudes & behaviours of individuals and groups in organizations. The study of organizational behaviour: systematically studies attitudes and behaviours and provides insight about managing & changing them, studies how organizations can be structured better, how events in external environments affect organizations. Human resources management: programs, practices & systems to acquire/develop/motivate/retain employees in organizations. Ex: recruitment & selection, compensation, training & development. Why do we study organizational behaviour? (1) interesting. Help understand why employees are committed to an organization & their motivation to work hard (2) important.