This document summarizes organizational behavior and resistance to change. It defines organizational change as a planned or unplanned transformation within an organization, including changes to mission, strategy, technology, operations, or personnel attitudes and behaviors. Resistance to change occurs when changes are not well understood or interpreted, and represents different interests within an organization. The document then discusses reasons for resistance to change such as dislike of change, uncertainty, or perceived negative impacts. It analyzes Kodak as a case study, describing its early success with film but then failure to adapt to digital photography. The document concludes that overcoming resistance to change requires addressing employees' fears, assessments, trust, change methods, and inertia.