The division of labor was first explained by Adam Smith in The Wealth of Nations. According to Adam Smith the division of labor means tasks are clearly defined and employees become skilled by specializing in doing one thing.
Division of labour is defined as the separation of a work process into a number of tasks, with each task performed by a separate person or group of persons.
It is most often applied to systems of mass production and is one of the basic organizing principles of the assembly line.
Over time, employees get skilled and focused and this brings about efficiency and improvement.
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