A lot of Philipinos here in Japan too. They most often are working in elementary schools as Assistant Language Teachers. Reason one being they work cheaper than native speakers. Reason two is they are often frankly better with kids than some of the crusty old geriatrics that are here. Standard pay for a month is around 250,000 yen ( 75,000 baht?) but the Phils will do the job for 60,000 baht. Above that level, there are fewer and fewer. My university has one Philipino adjunct lecturer, but she has an MEd from Canada and is functionally bilingual. Just a trace of an accent when she gets excited or nervous.