Irregular international migration has come to be regarded as a non-traditional threat to state security. This policy perception has led to the adoption of restrictive policies towards international migration in an otherwise globalizing world economy. The Refugee and Migratory Movements Research Unit (RMMRU) at Dhaka University was commissioned by the Ford Foundation to coordinate regional studies in South Asia on irregular migration and non-traditional security, with a further focus on the human insecurity faced by irregular migrants. The Collective was invited prepare a case study based on a survey of irregular migrants in the city of Karachi.