Extensions and Modifications
The visa you arrived with can be extended or modified to another category and the Thailand visa requirements will change depending on your circumstances. For example, you may have arrived as a tourist but found employment, which will necessitate having a work permit. To apply for a work permit you must first change your tourist visa to a Non-Immigrant B visa. Alternatively you may wish to extend your 3 month B visa to one year, or other similar change or modification.
If you are already working in Thailand, remember that your Work Permit expires when your Extension of Stay does.
You will need to renew your stay in Thailand before you can renew your Thai work permit. This can be done in Thailand or in some cases you must leave the country. If you cannot obtain your extension inside Thailand, you will have to get a new non-immigrant visa from a Thai Embassy or Consulate abroad as explained above. If you have an unexpired multiple-entry visa, all you have to do is go over the border and then return. If required to go outside Thailand to obtain a new visa, you will need to provide the Embassy or Consulate with copies of your work permit and new recommendation letter from your company, company registration documents, and financial and tax reports. All of this must be done prior to your work permit expiration.
These changes can be made but require an extensive amount of planning and paperwork – all in Thai. Trust Premier Thai Lawyers to handle this for you.