This study is about work shifts scheduling problem at a famous retailer branch in Jeddah. The goal of this study is to schedule cashiers shifts with respect to cashier cost and company policies, as well as increasing the productivity of cashiers. In order to achieve the goal, the team used the Enterprise Design Methodology. The team started collecting the data by using two types of techniques which are interview and questionnaire. After the data has been collected, the team analyzed it using multiple techniques such as the fishbone diagram. The next step was to develop a linear programming model. The model used to integrate the problem and to suggest the optimal decision that would complement the goal. As a result of devolving the model, the team was able to increase the saving by 10% through setting the new policy.