The document discusses several foundations and theories of organizational development, including: 1) Planned change theories like Lewin's 3-stage model of unfreezing, changing, and refreezing as well as Burke-Litwin models of first and second order change. 2) Systems theory which views organizations as open systems that take in inputs, transform them, and produce outputs. 3) Participation and empowerment strategies that involve enabling and engaging employees in the change process. 4) Normative-reeducative strategies that aim to change organizational culture through education rather than coercion.