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Allowances. INSY 3021 Auburn University Spring 2007. Uses. Accounts for interruptions, delays, and slowdown in the workplace Must be both accurate and correct Can be calculated by Production Study or Work Sampling. Production Study.
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Allowances INSY 3021 Auburn University Spring 2007
Uses • Accounts for interruptions, delays, and slowdown in the workplace • Must be both accurate and correct • Can be calculated by Production Study or Work Sampling
Production Study • Requires complete observation over a long period of time • Record specific instances of Non-Value Added Activity • Data must be adjusted to the normal performance level • Long, tedious (technician & operator), results may be biased
Work Sampling • Requires a large # of random observations • Frees the technician to perform other duties • No use of a stopwatch is necessary • Technician simply records what each operator is doing • Yields an approximation
Work Sampling Shortfalls • Analyst should not anticipate observations • Confine observations to predetermined subjects • Study accuracy depends on both the number of observations and the sample scheduling
Personal Needs • Those interruptions necessary to the general well-being of the employee • Trips to water fountain, restroom, etc… • Can be a function of the working environment • Typically 5%
Basic Fatigue • Accounts for the energy expenditure to perform the given work • Typically 4% under Normal Conditions
Variable Fatigue • Lessening of the will to work • Can be mental or physical, or a combined effect • Factors include: Noise, heat, humidity, posture, muscular exertion, tediousness, general health of the worker • Can be directly measured by declining output production over the course of the day
Primary Considerations • Abnormal posture: sitting Vs..standing Vs. bending Vs • Muscular force: time Vs. exertion level; recovery • Atmospheric conditions • Noise and Illumination levels • Visual & mental strain • Monotony and Tediousness
Unavoidable Delays • Interruptions from: supervisor, dispatcher, time study technician, material faults, interference from servicing multiple machines
Avoidable Delays • Social visits • Day-dreaming • Idleness • Unnecessary work interruptions
Policy Allowances • Different performance under exceptional circumstances • ADA, new-employees, light duty, elderly, etc…
Allowances • Typically about 15% • Personal interruptions • Fatigue • Unavoidable delay • Standard Time (ST) • ST = NT (1 + allowances)