The paper examines the migration policy regime in Thailand using a human security lens. It suggests that insecurities experienced by migrants are partly caused or exacerbated by a migration policy regime, consisting of migration laws and regulations and non-migration related policies and programs, that pushes migrants into irregular forms of mobility and insecure employment options. These effects are worse for women migrants who have fewer resources to access legal channels while they are relegated to insecure employment in the reproductive or informal sectors. Using a gender and human security analysis, therefore, reveals how the migration policy regime, often informed by a restrictive national security approach, can clash with the human security needs of migrants by creating a large pool of unprotected irregular migrants with women occupying the most vulnerable forms of employment. In conclusion, it is suggested that this ‘en-gendering’ of human insecurities could be overcome if gender equality was designed into policies and guided their implementation.