International migration, transfers of norms and public goods back home

International migration represents a potential channel for the transmission of norms, attitudes, and values back to the home countries. In this paper, we explore how international migration affects tax morale and aversion to the free-riding of members of the household left behind in the home country. We use a rich longitudinal household-level database on Polish society (period 2007-2015) that allows us to observe social attitudes and values of individuals before and after the actual migration of a member of the household. We find that having a migrant in the household has a significant and positive effect on tax morale and increases aversion toward free-riding of stayers. We also find that migrants have a lower level of tax morale before departure compared to stayers, suggesting that international migration leads to an overall gain in pro-social behaviors.