BANGKOK, Feb. 10 -- Thailand's Department of Employment (DoE) carried out a massive inspection of language schools in the capital city's Ratchada and Bang Na areas yesterday, following the arrest of eight undocumented South Korean language teachers.

DoE director-general Somchai Morakotsriwan said the inspections were to prevent any negative impact on job opportunities for Thai workers, The Bangkok Post reported today.

"Foreigners seeking a work permit for teaching positions in educational institutions must enter Thailand under a non-immigrant visa and submit their applications along with relevant teaching qualifications and other required documents at one of the Bangkok Employment Office Area 1-10 or at the Provincial Employment Office wh...