Do teachers in Thailand need to keep their work permit in their possession or can the school hold it?

The discussion revolves around whether teachers in Thailand should keep their work permits with them or if it's acceptable for the school to hold onto them. One comment indicates that while it's ideal for teachers to have their permits, officially, they are meant to keep it at the school. Another commenter emphasizes the necessity of having the work permit on hand for various uses, like opening a bank account and potentially for border crossings.