We proposed a new human index named “skill index” and also proposed operator allocation and scheduling method using this index in our previous study. We confirmed the training effectiveness of our method under some order conditions. However, the order contents are changed during operation time in a real site. In this study, we consider the operator re-allocation procedure using our method under the order change to keep operator training and productivity. As a result of the computer experiments, we confirmed that the procedure has to change by a timing of order change.