This document provides an overview of organizational change and development. It discusses how change is constant and occurs both internally and externally to organizations. Organizational development aims to help organizations cope with change through planned interventions and ongoing processes. The document outlines models for understanding and planning organizational change, including force field analysis. It also discusses key roles in change processes, such as change sponsors, agents, and targets. Finally, it proposes strategies for implementing change, such as gathering resources and building coalitions of support.