There are between 1.5 and 2 million migrant workers in Thailand, roughly 80 percent are Burmese. This article highlights legal and social factors which contribute to the gross exploitation of migrant workers in Thailand, with a particular focus on Burmese workers in Mae Sot, Tak province, which is host to some 100,000 Burmese workers employed primarily in textile and garment factories, other manufacturing sectors, and agricultural work. Mae Sot is situated on the Thai side of the Thai-Burma border.