Mayoas theory of management ( please see the assignment criteria )

3. Mayoas theory of management involves a focus on the social environment. He writes, a?Increases of production a quantity and quality a occur in response to social and physical improvement of conditions and not as the result of conscious effort; in the majority of instances the worker, himself or herself, is as much surprised by the improvement as the observer.a? (a?The Human Effect of Mechanizationa?, p. 171)

If the worker is unaware of the change, to what extent can the manager be accused of unethically manipulating the worker?