Can my husband's mother apply for a Non-O dependent visa in Thailand if he holds a Non-O visa based on employment?

You are asking TWO questions in this post:

1. "How would my husband acquire a Non-O Visa for his mother based on being over 50"?

2. "How would my mother-in-law acquire a one year extension of stay based on being a trailing parent to a foreigner who is allowed to stay in Thailand temporarily"?

For the first question, that would be a question to ask the Thai Consulate where your mother-in-law is residing, and if they are issuing those visas. IF they are, expect the following documents to be required:

1. Her passport with at least one year remaining and two blank pages.

2. Proof of residency of the country the applicant is residing, if the applicant is not residing in the home country.

3. Two 2” x 2” passport photographs.

4. The visa application.

5. Your husband’s birth certificate (or other documents) showing that the mother-in-law is his mother.

6. A copy of your husband’s Non-O visa Based on Marriage to a Thai National

7. 2K THB in local currency

For the second question, that would be a question to ask the local immigration office where the mother-in-law is residing. Expect the following documents to be required for this extension of stay:

1. The applicant’s passport and a copy of:

a. The data “picture” page.

b. The most recent visa (if applicable).

c. The most recent entry stamp or extension of stay (if applicable).

d. The departure card (“TM 6”) that should be stapled in the passport.

2. The extension of stay application form (“TM 7”).

3. A copy of the submitted Notification of Residence of Foreigners form ("TM 30”).

4. Your husband physically next to her, and:

-Their original passport and a copy of their data “picture” page, and their extension of stay or visa.

5. A copy of the birth certificate showing proof of relationsihp

6. 2x passport sized (4cm by 6cm) photos.

7. 1,900 THB processing fee.