Motion and Time Studies Flashcards Preview

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Flashcards in Motion and Time Studies Deck (10):

Definition of a motion study

Study of body motions employed in performing a job to develop the most efficient work method


Definition of a time study

Study of time it takes to complete components of an activity to redesign processes by reducing bottlenecks and eliminating necessary waste


Purpose of motion time studies

1. To develop an efficient system and method
2. Standardize this system and method
3. Determine the time required to do this method.
4. Assist in training worker for this method.



Eliminated idle time and duplication of effort and reduced jobs to short repetitive cycles with systematic skills. Make workers act like robots.



Basic motions of the human body to help categorize tasks and predict times.


Time study results

Normal time: elapsed elemental time normalized by performance rating

Standard time: normal time normalized by allowance factors


Performance rating

A weighting factor based on
1. Skill
2. Effort
3. Conditions
4. Consistency


Allowance factors

A weighting factor based on
1. Personal delays (i.e. bathroom)
2. Fatigue
3. Unavoidable delays (i.e. cleaning up)


Predetermined time study

We break down the task into basic components and can predict how long it should take and design around that ahead of time.


Work sampling

Used for ill defined or non-repetitive tasks; breaks workers job into % of time spent on each larger task (i.e. in meetings, on the phone, taking breaks)