What is Overall Efficiency, On-Standard Efficiency and Off-Standard Efficiency?
"Efficiency" is a term commonly used in the garment manufacturing industry to describe the abilities and expertise of a sewing operator. A garment factory's capacity is estimated as a result of the efficiency of its operators or the efficiency of its production lines. As a result, one of the most widely used performances measuring tools is efficiency.
We are all familiar with the
definition of efficacy. We also understand how to calculate the efficiency of a
production line or the efficiency of a single sewing operator. However, we may
be unfamiliar with the following terms, which are extremely important.
The efficiency of workers and the efficiency of the production line are
measured in terms of productivity. As a result, special attention should be
paid to its efficiency.
Generally, Efficiency Calculation
formula is
Efficiency (%) = (Total Produced Minutes / Total Attended Minutes) × 100
But this formula is to calculate average efficiency. Here all the loss time of operators also included. To make the efficiency more accurate, the On-Standard Efficiency, Off-Standard Efficiency and Overall Efficiency are calculated.
When are the
On-Standard Efficiency, Off-Standard Efficiency and Overall Efficiency measured?
A typical day's work of an operator is
broken down into the following categories:
Standard minutes are produced by
operators on the sewing line, whether they are performing an on-standard
operation or an off-standard operation. However, downtime occurs when an
operator does nothing but sitting idle for some reason is lost time.
It is not the operators' responsibility if they do not get work. Consequently, if you evaluate their performance based on all hours spent in attendance, you will receive an inaccurate picture of their overall performance. Therefore, only labour hours considered to be on-standard are used to calculate efficiency when measuring on-standard efficiency.
Measurement of on-standard efficiency is helpful for analyzing operator skill; however, when it comes to production at the end of the day (or line efficiency), and incentive computation for the line and individual operator, overall efficiency is utilized to determine the eligibility level.
How to calculate on-standard efficiency, off-standard efficiency and overall Efficiency
On-Standard Efficiency= (Total On-Standard Minute Produced × 100)/(Total On-Standard Hours Worked × 60) %
Off-Standard Efficiency = (Total Off-Standard Minute Produced *100)/(Total Off-Standard Hours Worked × 60) %
Overall Efficiency = [(Standard minutes produced while working on the On-Standard
Work
+Standard minutes produced while
working on the Off-Standard Work) × 100] / [60 × (Total hours worked on
the On-Standard Work + Total hours worked on the Off-Standard Work + Total
lost time in hours)]%
Employees' on-standard and overall efficiency will be the same if there is no
lost time or non-standard hours are worked.
The overall efficiency will be lower
than the normal efficiency if there is lost time.
Unavailability of the
appropriate technology for recording lost time data is one of the difficulties
in measuring on-standard efficiency. If you use a print format, you can record
lost-time data, but the amount of data you can capture will be limited, and not
the actual lost-time hours.
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