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In contrast to regulated professions such as engineering, law or medicine, there is not a legally required educational requirement or license for economists. In academia, most economists have a Ph.D. degree in Economics.[citation needed] In the U.S. Government, on the other hand, a person can be hired as an economist provided that they have a degree that included or was supplemented by 21 semester hours in economics and three hours in statistics, accounting, or calculus.[8] In fact, a professional working inside of one of many fields of economics or having an academic degree in this subject is often considered to be an economist;[1] see Bachelor of Economics and Master of Economics.