Editing Content theory (section)

===Wage incentives===
Humans are motivated by additional factors besides wage incentives.<ref name="Roethlisberger book">Roethlisberger, F. J., et al. Management and the Worker; an Account of a Research Program Conducted by the Western Electric Company, Hawthorne Works, Chicago. Cambridge, Mass.: Harvard University Press, 1939.</ref> Unlike the rational theory of motivation, people are not driven toward economic interests per the natural system. For instance, the straight piecework system pays employees based on each unit of their output. Based on studies such as the Bank Wiring Observation Room, using a piece rate incentive system does not lead to higher production.<ref name="Roethlisberger book"/> Employees actually set upper limits on each person's daily output. These actions stand "in direct opposition to the ideas underlying their system of financial incentive, which countenanced no upper limit to performance other than the physical capacity of the individual".<ref name="Roethlisberger book"/> Therefore, as opposed to the rational system that depends on economic rewards and punishments, the natural system of management assumes that humans are also motivated by non-economic factors.