performance rating(redirected from star rating system)
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performance rating[pər′fȯr·məns ‚rād·iŋ]
A procedure for determining the value for a factor which will adjust the measured time for an observed task performance to a task time that one would expect of a trained operator performing the task, utilizing the approved method and performing at normal pace under specified workplace conditions. Normal time (ultimately subjectively based) is the time that a trained worker requires to perform the specified task under defined workplace conditions, employing the assumed philosophy of “a fair day's work for a fair day's pay.”
The performance rating process is concerned with determining normal pace during the work portion of an average day and must, therefore, consider the fatigue recovery aspects of allowance (nonwork) times occurring during the day. The following two equations relate factors in determining how much time a worker will be allowed per unit of output: If the observed time for a task is adjusted by the performance rating factor to determine normal time, and allowance time is added for nonwork time, the standard time will represent the allowed time per unit of production.
The most commonly employed rating technique throughout the history of stopwatch time study, including the present, is referred to as pace rating. A properly trained employee of average skill is time-studied while performing the approved task method under specified work conditions. Rating consists only of determining the relative pace (speed) of the operator in relation to the observer's concept of what normal pace should be for the observed task, including consideration of expected allowances to be applied to the standard. See Human-factors engineering, Methods engineering, Work measurement