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. Since the introduction of stopwatch time study more than a hundred years ago, there has been a need to adjust an observed operator time to a “normal time.” Normal time 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.”