The impact of social networks on labour market outcomes: New evidence from cape breton, Working Paper 18786, National Bureau of Economic Research

Debates centered on the role of social networks as a determinant of labour mar-ket outcomes have a long history in economics and sociology; however, determining causality remains a challenge. In this study we use information on random as-signment to a unique intervention to identify the impact of changes in the size of alternative social network measures on subsequent employment at both the individ-ual and community level. Our results indicate that being assigned to the treatment protocol signi\u85cantly increased the size of social networks, particularly weak ties. Nevertheless, these increases did not translate into improved employment outcomes 18 months following study completion. We do not \u85nd any evidence of treatment e¤ect heterogeneity based on the initial size of ones social network; but those whose strong ties increased at a higher rate during the experiment were signi\u85cantly less likely to hold a job following the experiment. We \u85nd that many of these results also hold at the community level among those who did not directly participate in the intervention. In summary, our results suggest that policies can successfully in-uence the size of an individuals social network, but these increases have limited impacts on long run labour market outcomes with the notable exception of changes in the composition of individuals who hold jobs. We wish to thank Charlie Beach, Doug Tattrie and seminar participants at the Income, Inequality and Immigration: A JDI Conference Honouring Charles M. Beach for helpful comments and suggestions on earlier drafts. Lehrer wishes to thank SSHRC for research support. We are also extremely gratefully to members of SRDC for answering numerous questions about the data used in this study. The usual caveat applies. 1