An Enterprise can present in every moment numerously issues and problems that have to be necessarily faced and solved in such a way that the objectives are respected. For this reason borns the requirement to create an opportune and valid method to reach this scope. This requirement culminates in the definition of activities provided by the World Class Manufacturing, namely a “way to think” well structured and defined that has as objective to achieve a continuous improvement of productive activity setting to zero the losses and wastes, with a solid base founded on the involvement of personnel, on choices and objectives shared at each level of hierarchical pyramid .