Organizational change refers to alterations made to the work environment, structure, technology, or personnel within an organization. Change is necessary to adapt to both external factors like new technologies or regulations, and internal factors like new management or deficiencies. Common change models include Lewin's three step model of unfreezing, changing, and refreezing; and Kotter's eight step plan which involves establishing urgency, building support, and reinforcing changes. Resistance to change stems from insecurity, lack of communication, and disruptions to status quo, so change must involve participation, communication, and addressing people's concerns.
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