On 15/01/2018 at 12:28 PM, ubonjoe said:

Immigration is correct. Your extension ends on the date you get divorced.

There is no one week unless you apply for an extension, pay 1900 baht and be granted 7 days to leave the country after the extension is denied.

? I can apply on the day of divorce at the local immigration office for an extension of my marriage extension for 1 week  for 1900?

5 minutes ago, Birdman said:

I asked if I can change my extension from marriage to business with all the papers, which I have,  without mentioning divorce. 

That was probably because your extension was still valid. They will not cancel an extension without a valid reason. Divorce is a valid reason to cancel to the extension and then apply for one based upon working at the same time.

You would not be applying for a non-b visa since that can only be done if you are on a tourist or visa exempt entry.

No problem with the visa exempt entry other than having to go out again to get the non-b visa unless you can qualify to apply for it at immigration. See: https://www.immigration.go.th/content/service_72

 

10 minutes ago, Birdman said:

? I can apply on the day of divorce at the local immigration office for an extension of my marriage extension for 1 week  for 1900?

Yes you can.