"This paper analyses both theoretically and empirically the effects of immigration on the wage rate of native workers. There is rare evidence in empirical literature that immigration generates a fall in the wages of manual workers. By hypothesizing an economic system where advanced firms buy an intermediate good from traditional firms, which employ manual workers in both clean and dirty tasks, the latter being more disliked by native workers, we present a theoretical model that justifies these results. We conclude that native skilled wages always increase whereas native unskilled wages can both increase or decrease with immigration. An empirical analysis of the Italian labour market follows, showing that native workers' wages always rise with immigration."

Support: Digital