This work describes the two projects carried out during my internship within a L’Oréal factory belonging to the Luxury Division, in particular in the service in charge of the subcontracting unit, where the short-term planners manage the subcontractors’ production and material flows. In the first chapter an analysis of the luxury industry is presented, which forecasts a growth in the coming years but also an intensification of competition. Customers become always more aware and demanding, thus flexibility, extra-high quality and customisation are the main success factors and are more likely to be reached by subcontracting a part of production. A successful subcontracting practice also passes through trust and collaboration that allow to ease and speed up the interactions.