Human Resource are the key essentials of any organization success, the human factor drives everything, the success of any organization mostly depends on the ability to attract, motivate, retain and develop skilled people in business organization and management. No one can get success without knowing about people and their behavior at work, behavior direct links with the performance of the workforce, to understand and manage people at work it is vital to know about the behavior of the personnel. A question was always in my mind to write a book that would somehow appeared easy to most of students in the relevant fields. This book fulfills the primarily needs of the students of the business administration, commerce and management because behavior is an important management course, and is equally useful for those persons who are managing their organization and want to know the basic of organizational behavior. The purpose of this book is assisting the present and future organizational members to understand the fundamentals of organization behavior and to manage people at work. This book describes the important concepts that make up the field of organization behavior.