Science, Not Rule of Thumb : In order to increase organizational efficiency, the Rule of Thumb’ method should be substituted by the methods developed through scientific analysis of work.

Rule of Thumb means decisions taken by manager as per their personal judgement’s. According to Taylor, even a small production activity can be scientifically planned. This will help in saving time as well as human energy. Decisions should be based on scientific enquiry with cause and effect relationships.

Harmony, Not Discord : Taylor emphasized that there should be complete harmony between the workers and the management since if there is any conflict between the two; it will not be beneficial either for the workers or the management Both the management and the workers should realize the importance of each other. In order to achieve this state, Taylor suggested complete mental revolution on the part of both management and workers.

It means that there should be complete change in the attitude and outlook of workers and management towards each other. It should always be kept in mind that prosperity for an employer cannot exist for a long time unless it is accompanied by the prosperity of the employees of that organization and vice versa.

Mental Revolution: The technique of Mental Revolution involves a change in the attitude of workers and management towards each other. Both should realize the importance of each other and should work with full cooperation. Management as well as the workers should aim to increase the profits of the organization.

Cooperation, Not Individualism : This principle is an extension of principle of “Harmony, not discord’ and lays stress on mutual cooperation between workers and the management. Cooperation, mutual confidence, sense of goodwill should prevail among both, managers as well as workers. The intention is to replace internal competition with cooperation.