What are my options for staying in Thailand after resigning and what about the visa cancellation process?

And again. The moment you all apply for an Extension of Stay, you all sign a document. As nobody cares to read, questions like this keep on coming, PLEASE read before you SIGN: i acknowledge the terms and conditions applicable to this permit.

The form is known as STM2, thanks

Follow the rules and all is good, ignore the rules and it can bite you in the ass later as you signed you know what to do.

Just for information: In my local Labour Office, they will not allow the work permit to be cancelled unless it is done by the employer. They will also not allow it to be cancelled in advance of the termination of employment date. It must be done on the actual termination of employment date, which obviously means you can't cancel your extension of stay based on work at Immigration in advance either, since they require the receipt from the Labour Office.

So, different provinces, different rules, which make things that should be simple, that bit less so. :)

Just so you're clear, it's NOT your employers responsibility to cancel your work permit and go cancel your extension it's yours (the extension is in YOUR passport and the work permit is in YOUR name).

Are you on the original 90 day VISA entry or are you on an extension of stay from the immigration office? That makes a difference on what you need to do