time-and-motion study
noun/ˌtaɪm ən ˈməʊʃn stʌdi/
/ˌtaɪm ən ˈməʊʃn stʌdi/
- a study to find out how efficient a company’s working methods are
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time-and-motion study
Definition of time-and-motion study noun from the Oxford Advanced Learner's Dictionary