Thanks, So if I understood correctly, I will tell him to prepare all documents to apply for an extension based on child support and then go to Chiang Wattana to cancel his extension based on Retirement and at the same time apply for extension based on Thai Child support. That should give him a legal stay to apply for a work permit right?
, I think the marriage is/was not so stable so he didn't want rely on the spouse. Also the retirement extension was all done the same day so convenient for him, while working from Singapore. Question about "he Could go in" Meaning , just go to Chaeng wattana and cancel his current extension? His HR tells him if he doesn't apply for a visa in PP he can't apply for a work permit. I think if you have an extension based on Wife or kids you can just apply for a new WP.