This document discusses models for managing resistance to organizational change. It presents the Harvey and Brown model which shows different levels of resistance and chances of success depending on the degree of change and impact on culture. It also discusses Kurt Lewin's three stage model of change - unfreezing, changing, and refreezing. Finally, it outlines some common reasons for resistance to change and different methods that can be used to overcome resistance, along with potential traps to avoid and basic guidelines for managing change.