This article reviews some of the possible changes that may occur in the national labour markets of many OECD countries as a result of the internationalisation of production by multinational companies, with a particular focus on the impact of outward foreign direct investment (FDI) from OECD countries on employment in the home country of the investing firms. Existing studies suggest that the overall impact of trade and the internationalisation of production on aggregate labour market outcomes has been comparatively small, although particular skill and occupational groups have been affected more strongly. The empirical findings in the paper suggest that the aggregate employment impact of outward FDI varies across industries and countries. For manufacturing industries with strong commercial links with the non-OECD economies, there is evidence that domestic employment has become more sensitive to movements in domestic labour costs. At the country level, the growth of outward investment is found to have a significant positive effect on domestic employment growth in the United States. In contrast, there is a negative association in Japan, especially from outward investment in China.