This document provides an overview of organizational change and development. It discusses that organizational change is the process by which organizations move from their current state to a desired future state to increase effectiveness. It also describes the nature of change in terms of history, politics, management, organization, and people. Additionally, it covers levels of change, types of change, forces for change, and resistance to change. The document also defines organizational development and its values and techniques for improving organizational effectiveness and employee well-being.