The world of work and the way work life is organized in our societies today is a key determinant of well-being. Maintaining a good level of health for the working population is an important objective of any society, workplace accidents and occupational diseases or psychological disorders reduce the effective contribution of people to their well-being, that of their family, that of your community and that of your country; and, on the other hand, because it is an essential condition for sustainable, economic, social and environmental development. Furthermore, the most successful organizations have understood the importance of investing in promoting health at work. They are aware that healthy workers and a healthy workplace are the foundations for sustainable economic success. In the context of the transition towards the knowledge society and the growth of the service sector in our economies, the role of workers becomes more important. It is vital, and increasingly recognized, that only healthy employees enable companies and our societies together to develop innovative capabilities that ensure survival in global competition.