Individuals spend one third of their life working. Age of retirement is regularly pushed back. The main challenge in the nearest future will be to maintain workers health to deal with their work till retirement. Morbidity before retirement has a huge cost, both in public health and economically for companies. Numerous factors increase morbidity such as stress at work, sedentary and low physical activity, and poor nutrition habits. Nowadays, digital world wildly invades lives and offer a no-limit possibility to interact with individuals, everywhere. Thus, a software able to understand an individual in its globality seems to address this challenge. Moreover, managers need to understand the actions needed within their company. The objective of WittyFit is to increase life expectancy and well-being. WittyFit will constitute a powerful database to build strong evidence and new knowledge on the relationships between work, behavior, and health, based on a large amount of epidemiological data.