This document discusses leadership approaches and models for leading organizational change. It covers transformational leadership, charismatic leadership, and Beer's model of organizational change which states that change occurs when dissatisfaction is high enough to motivate action but not so high that people leave the organization. The document also discusses Kotter's 8-step change management process and Lewin's 3-stage change model of unfreezing, changing, and refreezing. Overall, the document provides an overview of different leadership styles and frameworks that can be used to effectively implement organizational change.