He is the author of Fairness, Responsibility, and Welfare (2008), a co-author of Beyond GDP (with Didier Blanchet, 2013), A Theory of Fairness and Social Welfare(with François Maniquet, 2011), and the coeditor of several books, including Justice, Political Liberalism, and Utilitarianism: Themes from Harsanyi and Rawls (with Maurice Salles and John Weymark, 2008) and the Oxford Handbook of Well-Being and Public Policy (with Matthew Adler, 2016). His research on normative and public economics and theories of distributive justice has focused in particular on the analysis of equality of opportunity, risk, redistributive taxation, climate policy, and on seeking solutions to famous impossibilities of social choice theory.