The report shows that high and/or increasing levels of inequality of outcomes, as observed in many OECD and emerging economies, tend to be an obstacle to income and social mobility. In this context, it is not surprising that there is a growing perception in opinion surveys that societies and economies have become less mobile and this is fuelling growing dissatisfaction with the economic system and hindering social cohesion and political enchantment. It also reviews policies to foster more socially mobile societies.