This Book is an earnest attempt to present the relationship between Organizational Citizenship Behavior and Managerial Effectiveness among Public and Private Sector Employees. It is hoped that the discernible readers - students, teachers, and management practitioners - will find this edition more rewarding and useful. No book of this nature is complete and perfect once for all times. I believe that the contents of the Book have immense academic use for the students pursuing post graduate and research programs in management and commerce. This Book will serve the administrators and policy makers, who are engaged in the areas of management and commerce as a guide and reference text. Hence, constructive suggestions from the readers will be highly appreciated and acknowledged for further improvement of the book in its subsequent editions.