International students and labour market outcomes of US-born workers

Do international students graduating from US colleges and universities affect labour market outcomes of similarly educated native-born workers? I address this question by exploiting a change in US visa policy that results in increases in the labour supply of master’s-level international students to the US labour market in science, technology, engineering and mathematics (STEM) fields. Estimates show that increases in their labour supply via temporary work permits in a certain field reduce employment of recently graduated native-born holders of a master’s degree but increase earnings of experienced native-born holders of a master’s degree in the same field. These findings support the hypothesis of substitution between skills of similarly educated immigrants and native-born individuals in the same age group and complementarity between skills of those in different age groups