In organizational development theory, instead of bringing in a new change strategy, fixing what is wrong with the organizational processes is favored. The main idea of the organizational development theory is that organizational processes can impact a worker's quality of work, efficiency, motivation, and behavior. Organizational climate is the mood of the organization. Is there open communication with leadership? Communication practices affect the climate of an organization. A good organizational climate will likely have higher worker satisfaction and less worker stress. A big part of organizational culture is the organization's behavioral norms and values. Organizational Development Theory has four stages for developing organizational strategies (diagnosis, action planning, intervention, and evaluation). Diagnosis, is there something in the organizational processes impairing positive results? Action planning, making up a plan. Intervention, carrying out a plan. Evaluation, did the plan work?

Reference: 

Health Behavior and Health Education | Part Four, Chapter Fifteen: Stage Theory of Organizational Change (upenn.edu)