I have extension of stay based on work, since I also started Master degree, do I need when I am making next extension of stay bring documents from my university to get extension of stay based on two purpose?
TLDR : Answer Summary
When applying for your next extension of stay in Thailand based on work, you do not need to present documents from your university, as the extension for employment allows you to study simultaneously. However, it is important to note that an extension based on studying does not permit work. If you decide to shift to a student visa, you would need to cancel your work-based extension first.