The Erasmus Happiness Economics Research Organization (EHERO) is a scientific institute where happiness is studied. Happiness is defined as the subjective enjoyment of one's life as a whole. The mission of EHERO is to contribute to greater happiness for a greater number of people. EHERO does this by providing evidence based knowledge about happiness, with the aim of promoting better informed choices throughout society, be it at the level of governments, organizations or individuals. EHERO provides knowledge in three ways: 1) by gathering existing knowledge, 2) by developing new knowledge and 3) spreading knowledge. EHERO is based in Erasmus School of Economics at Erasmus University Rotterdam. Part of the participants work in other faculties of Erasmus University and in other universities.