The Empower Foundation is a sex-worker NGO in Thailand, sort of a prostitutes’ union. Their website is here. I was having trouble getting it to load at first, but once I clicked on the link toward the bottom, it worked fine. The problem is probably due to our crappy Internet service, though.
Empower has a field office in the Patpong red-light district. They’ve done a lot of good work over the years, keeping the girls who choose to stay in the profession healthy and assisting those who want to leave it.