1. Develop a science for each element of an individual’s work, which will replace the old
rule-of-thumb method.
2. Scientifically select and then train, teach, and develop the worker.
3. Heartily cooperate with the workers so as to ensure that all work is done in accordance with the principles of the science that has been developed.
4. Divide work and responsibility almost equally between management and workers. Management takes over all work for which it is better fitted than the workers.