This is considered an advantage to prospective foreigner employees as the employer would only have to be concerned about the procurement of work permit.
This is substantiated through a Marriage Certificate. There are instances (depending on the processing immigration office) when a copy of an Affirmation of Freedom to Marry is also required. This affirmation is obtained by the foreigner from his embassy in Thailand.
Note: Follow visa is issued same as visa of person working in Thailand, Visa expiry date of given follow Visa will be same as of visa for person working in Thailand.