High levels of psychological well-being amongst employees translate into good news for the organization -- including lower sickness-absence levels, attraction and retention of talented people and more satisfied customers, clients or service users. People with higher levels of psychological well-being work better, live longer and have happier lives. Engagement and well-being can sustain each other and lead to a healthier and more productive organization -- a win-win for employees and employer. This is a practically-orientated book giving sound advice and evidence-based guidance to organizations and individuals on how to improve and sustain employee well-being to realise its positive impact. It will be useful to HR, Occupational Health and managers in any organizational setting.