Who is responsible for cancelling a Non-B visa and work permit upon job termination?

Tod is % correct as usual. He gave me the same advice. I learned it the hard way. Let me share my experience.

My work permit stamp wasn't canceled officially on my passport. The immigration officer at the airport was kind enough to point out that it wasn't cancelled properly and told me to do it before I apply for another non-B with a future employer. I had to fly back to Phuket from Bangkok to get it canceled properly as I was based there then. I thought just exiting Thailand after the backend cancellation in their system would be fine. I was wrong.

Most people cancel the work permit, take the termination documentation to the immigration office about a week or so before the date and get the extension cancelled and the new stamp letting you stay until that date on the paperwork

if you get it wrong you won't have any issue FLYING out (some land borders won't let you out with an "open" uncancelled non-B extension) nor will you have issues flying back in on a tourist visa or a free stamp BUT if you don't cancel it correctly you will have issues if you ever go to get a new Non-Imm visa of any type

@Andrew ***********

, the employer is not responsible for doing ANYTHING other than giving you the termination paperwork and telling you where the Ministry of Labor is so you can cancel the work permit, Most employers do cancel the work permit for you but they don't have to as it's your work permit and extension