Today manufacturing units face several challenges, such as the growing complexity of their processes and supply networks, cost pressures, increasing customer expectations for quality, lead time, and customization. To gain a profitable production processes and improve competitiveness, many actions can be undertaken. Among them, one of the approaches is the deployment of information tools, to better manage and control the production process. Manufacturing execution system (MES) are the critical part that form a connecting link between the preceding and following in enterprise hierarchical structure. This project was carried out in GAI GIACOMO SRL. In this project the purpose is to evaluate the Manufacturing execution system practices of the employees working in the company.