Abstract
In the shop of manufacturing industry, demands of market fluctuates heavily. So we must adjust distribution of workers according to the work load every month. That is, we must fill up a lack of manpower by overtime works and holiday attendace. This problem is usually formulated as a multiobjective integer programming. But, generally speaking, this formulation is intractable to solve the problem in the sense that its soltion procedure becomes complex and comparing suboptimal solutions with optimal solutinos are difficult. In turn this paper makes up the model based on the membership function of fuzzy sets, proposes a solution procedure, and clarifies its efficiency.
