If he is an American and is using Social Security as his pension source, then he can log-on to the Social Security website at ssa dot gov, and download his benefits letter.
If he is an American using a pension source from a company, he should be able to contact the company and have them send him a benefits letter or statement. Many companies have a benefits website where he can download the letter/statement.
If he is an American using a pseudo-pension, as in transferring savings or investment funds, then he doesn't truly have a pension.
According to the Thailand Pass conditions it depends on which of the three schemes you use to enter Thailand ...
The Exemption from Quarantine option (aka Test and Go) requires: Travel from a port of departure in eligible country / territory and have stayed in eligible countries / territories for at least 21 consecutive days. You are required to stay 1 day in an approved SHA Extra+ or AQ hotel upon reentry to wait for RT-PCR test results.
The other two schemes do not have a requirement to stay out of country for a minimum number of days but capture you in a Sandbox for 7 days or Alternative Quarantine for 10 days upon reentry.
There are other conditions for all three schemes ...
I know these things ... I recommended going to her local office for a definition of the required documentation, noted the requirements vary office to office, and referenced my post as an example ...
I have clarified my comment and will stop contributing to this page ...
I would recommend as step 1 you go to the local Thai Immigration Office and ask for a list of the documentation you'll need to submit with your visa application when you have a Thai husband ...
As an example you could look at my recent post on what I submitted at the Chiang Mai office for my 'Thai Wife' visa ... the required documentation is not the same for a 'Thai Husband' and varies office-to-office ...
Note ... In our case, in Chiang Mai, change from Miss to Misses and change from maiden surname to husband's surname were two different sets of documents.
Yes, I confirmed this before posting. The original visa copied over from my previous passport specifies NON-OA.
I did notice that the first entry stamp is annotated NON-OA. All subsequent entry stamps after I my visa was extended are annotated NON-RE. This includes entry stamps after I extended based on marriage.
I agree. I'll have to talk to the immigration office.
Could my visa have been changed from an O-A to O without me knowing it? ... either when extending for retirement or when changing Reason to marriage ... If my type of visa changed would it be clearly annotated?