Stress related work, although always present, is considered one of the new risks for occupational medicine. This is largely due to a general change in the organization of work, inevitable in a constantly evolving market. It is also due to the presence of objective and subjective indicators that allow a satisfactory, though very complex, risk assessment. Related work stress generates repercussions on the company at every level, with a reduction in productivity, a reduction in the corporate image, a reduction in the quality of service, an increase in absenteeism and the dissatisfaction of workers. Some of these aspects are often submerged and difficult to identify. Related work stress also generate significant costs, both direct and indirect, for companies. A budgeted economic investment will be useful for forward-looking companies, especially for large companies. This book, written by authors from all over the world, will analyze some aspects of this increasingly relevant subject.