This is an article about the foundations of human well-being. It makes two integrated contributions. We first examine well-being around the contemporary world, finding a remarkable correlation between subjective and objective measures and a considerable variation in overall well-being among countries. We then argue that certain institutional conditions have laid the basis for these differences. Integrating insights from several research strands, we outline a new explanatory model of popular well-being that considers the interactions between three institutional provisions: a well-functioning democracy, advanced state capacity, and an encompassing social protection system. To test the relationships implied, we used a new dataset involving more than 100 countries in the contemporary world that extends six decades back in time. Our investigations indicated that all three factors play a role in promoting popular well-being. However, to understand how, we need to consider the ways in which they can complement, substitute and mutually reinforce each other.