Only in 2015, the Government of Thailand approved measures that allow for the registration of Vietnamese workers at the OSSCs,9 while a Memorandum of Understanding between Thailand and Viet Nam was signed in the same year (IOM, 2016). The contribution of highly skilled immigrants in Thailand should be seen in the context of the investment that is made by companies. For example, much immigration from Japan is linked to this country’s foreign direct investment (FDI), which accounts for around a third of all FDI in Thailand.10 FDI adds to national investment, creates employment for both foreign-born and native-born workers and contributes to the stock of knowledge and competitiveness of Thailand.