A multi-objective programming approach to develop an ergonomic job rotation in a manufacturing system

A worker assignment job rotation problem with the heterogeneous workers and the jobs with different workload level is presented in this paper. Both productivity and ergonomic criteria are considered in the problem and a multi-objective mixed-integer mathematical model is proposed to implement an ergonomic job rotation in a production system. The main objective of the model is to balance the daily workload that the workers are exposed together with reducing the production cycle time in the studied system. The proposed mathematical model is applied to a part of a truck assembly line. The model is programmed by GMPL mathematical modeling language and is solved by employing Gurobi solver. The computational results show the capability of the proposed model to optimize both objectives of the job rotation. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.