In dealing with ever changing and new challenges in professional life, it is important to take psychological findings on experience and behaviour of humans in organisations into account. These are motivation, satisfaction and attachment as prerequisites for a high engagement of employees, as well as risks such as stress and burnout. This leads to new conclusions and practical consequences for the arrangement of work, the choice of employees and their training (employee development) health promotion and personnel management. The two volumes give a systematic presentation of the main concepts and up to date research as well as practical advice.