This document discusses organizational change, defining it as any disturbance or alteration to an organization's internal or external environment. It identifies characteristics of organizational change such as being driven by internal and external forces, affecting the entire organization, and impacting people, structure, technology and other elements. The document also outlines different types of changes including planned and unplanned changes. It lists examples of external forces like globalization and internal forces like crises. Additionally, it discusses reasons for resistance to change and Lewin's model of change involving unfreezing, changing and refreezing stages.