Debates centered on the role of social networks as a determinant of labour market outcomes have a long history in economics and sociology; however, determining causality remains a challenge. In this study we use information on random assignment to a unique intervention to identify the impact of...

Understanding the causes of the dramatic rise in health insurance costs in the United States over the past two decades is of increasing importance to employers and policymakers. While past studies focus primarily on macroeconomic developments and changes in the health sector, little attention...