We show in a monopsony model that in response to a small increase in migration employment will increase in both low productivity non-compliant firms who pay less than and in high productivity firms who pay more than the minimum wage, but will increase by proportionately more in minimum wage...

We estimate the impact of internal migration on local labour markets in Thailand. Using an instrumental variable approach based on weather and distance we estimate an exogenous measure of the net migration inflow into each region. Our results show that instrumenting for the possible endogeneity...