Hmmm.

Mae Sot has numerous textile and garment factories. In most cases observed, Burmese workers made up the majority of workers inside the factories. Workers are paid, on average, 70 Thai Baht (R17/$1.50) a day for a 10 hour shift
Not all factory owners abuse their workers. The one factory I did get access to admitted using the Burmese workers, as they were cheaper than Thai labour, but did admit that working conditions were better than others. I was invited inside the factory, which is often out of reach from any westerner in the region, and conditions were suitable.
Story over at Verbal