As immigrants integrate more fully into the labour market, their potential impacts may well diminish. The impact of immigration on labour market outcomes of native-born workers using this approach has been assessed by examining several labour market outcomes of Thai-bom workers in relation to the proportion of economically active immigrants with comparable levels of skill. In line with findings of previous research (see Bryant and Rukumnuaykit, 2007, Kulkolkam and Potipiti, 2007, Lathapipat, 2010), foreign-bom workers do not displace Thai-bom workers on the labour market at the national level.