Yes, i agree, efficiency does fluctuate. Here is an example. Say we have a new employee starting and we plan that they are going to have a 50% efficiency while they are training. We dont want to change utilization because they will work the same shifts/hours, however, the new employee will only earn 1 standard hour for every 2 actual hours they are running the machine. So if a job has an activity that takes 7 standard hours (according to the hard routing) APO would actually schedule that job to run for 14 hours because of the new employee.
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