Classes of change in work simplification are given by :
MH SET - 2019, SET Exam - 2019,
Answer: C
The classes of change in work simplification were given by Marvin Mundel.
Marvin E. Mundel, a motion and time study engineer, set out five classes of change, from the least to the most extensive: changes in body position and motions; in the work place, tools and equipment; in the production sequence; in the finished product; and in the raw material. Home management texts use these classes to simplify household work.
Ralph M. Barnes wrote on motion and time study and the principles of motion economy, and Lillian Gilbreth pioneered motion study in the home, while Nickell and Dorsey wrote a standard home management textbook.
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