What documents do I need to switch from a Non-Immigrant O visa to teach in Thailand after my university has closed?

Meadhbh Rogers the Department of Labor would probably be able to answer that question

Person Person Person It sounds like you were working without a permit!

And, if your non O is for retirement, you are not allowed to work. I wouldn’t be making this public if it’s the case.

Person Person Person i understand. But you don't need to consult an attorney. They often aren't the experts on these hiring questions. And you don't need to already have a Non Immmingrant B visa to get the job. The school will help you get that after they hire you. Keep in mind you can only get the proper visa through the school that will hire you. And the school will have all the paperwork that you need to submit to the Ministry of Labor. The Ministry of Labor is where you should check for a list of the required documents and paperwork. However, the school the hires you will also have this information.

So your first step is to obtain a teaching job offer. The hiring school will then walk you through the visa and work permit process. You can probably save time by already having copies of required documents in your possession before beginning your job search. But, in addition to a college degree, the school may also require that you already have a teaching credential from your home country or wherever you obtained your college degree. Lack of a teaching credential could be a barrier to obtaining a teaching job, at least in an international school.

I recommend checking the international school and bilingual school websites for job openings. All the websites typically list them. But keep in mind the hiring period for the international schools occurs in the spring, with the new school year beginning in August. So most of the hiring has already occurred. But there is sometimes a position they have not yet filled, which may be an opportunity for you.

Good luck