Law of diminishing marginal returns

The law of diminishing marginal returns states that, at some point, adding an additional factor of production results in smaller increases in output. For example, a factory employs workers to manufacture its products, and, at some point, the company operates at an optimal level. With other production factors constant, adding additional workers beyond this optimal level will result in less efficient operations—Read more at Investopedia. Kenton, Will. “Law of Diminishing Marginal Returns.” 11 July 2019.