2.Instrument : It consisted of 3 part:
2.1 The researcher was used Documentary Research such as literature review , thesis, journal and another document related to migrant worker.
2.2 An interview form was used informal interview to problem of management of migrant workers is Special Economic Zone at Mae Sod district, Tak Province and In-depth interview from government officers and private entity who deals with migrant workers.
2.3 An Observation form was used Non -Participant Observation.
3. Data collection: