Foreign Direct Investment and Wages in Domestic Firms in Ireland: Productivity Spillovers versus LabourMarket Crowding Out

There is a large literature on the positive spillovers frequently thought to be associated with inward foreign direct investment. Aitken et al. (1996) identify several cases, however, where inward FDI appears to have reduced wages in domestic firms. They suggest that this might arise either because foreign firms increase the degree of productmarket competition that domestic firms face, or because they poach the best workers from domestic firms. We concentrate on the second effect, arguing that the first is unlikely to arise in the Irish case to which our data pertain. In a theoretical section we show that the labour- market poaching effect cannot generate the results postulated if labour markets are competitive and production functions are of the Cobb- Douglas variety, but that it can arise if production functions display higher elasticities of substitution. In an empirical section based on a sample of larger Irish firms we show that, consistent with our theoretical model, foreign presence has different effects on wages and productivity in domestic exporting and non-exporting establishments.