Disentangling the migration-trade nexus: the pro-trade effects of immigrants and emigrants in the presence of vertical and horizontal product differentiation

This paper presents an exploration of the migration-trade nexus taking the case of Italy by crossing the two dimensions of migration (immigration and emigration) and the two dimensions of intra-industry trade (vertical and horizontal). This empirical strategy proves useful in refining interpretation of econometric results. In general, we find that both immigration and emigration are positively and significantly related to intra-industry trade. However, the magnitude and the statistical significance of the impact of migration on trade vary, depending on the type of trade flows considered (vertical or horizontal), the direction of migration (immigration or emigration) and the partner countries considered (OECD or non-OECD). In particular, we find that immigrants from non-OECD countries have a positive and significant impact on both ‘variety trade’ and ‘quality trade’, while immigrants from OECD countries significantly affect ‘variety trade’ only. Emigrants to non-OECD countries have positive effect only on ‘variety trade’. These findings are largely consistent with predictions deriving from theoretical models of intra-industry trade and from the literature on migration-trade nexus.