This subject keep coming up all the time. I have been hobbying for so many yrs and mainly at Asian spas. I have never come across any girl at any Asian spa being forced to work. Most of them drive much better cars than us and some have 2-3 houses. They go as they please and work where they want. Some owners are on their knees with popular girls to keep working for them. Some of them may be recruited from China and Korea by agents and brought over here to work at spas but they are free to go where they want and the owners have a hard time keeping the good girls.
Human trafficking is mostly with local young Canadian girls from Quebec and Newfoundland, brought over here by pimps and forced to work from hotels and condos. I know of a few Eastern Europeans and Russians as well controlled by gangs. It is very rare with Asians and even if they have it, those girls never work at spas. Mostly confined in brothels and houses.