No one works alone; everything is done in a team. This is the question: to produce quality, for the best price and fast. Because of this, a fundamental change has come about in the way we understand the organization of work; from the worker being the basic unit of work, we have moved to considering the group as the fundamental cell of the entire organization. In companies, working groups carry out an important dual function, for their members as much as for the organization itself: they satisfy the needs of the company and, at the same time, those of the individuals.