Liquorice

For which Immigration will insist he obtain a Non B visa first.

Incoming Tourist Tax, no problem, I'm a Non Immigrant. 😉

Then your options are limited to either VE entries or 2 x METV (multiple entry tourist visa) from the Thai Embassy in Stockholm. https://thaievisa.go.th/visa/tourist-visa Multiple entry, valid 6 months.

I stand corrected, you are of course correct. I wasn't accounting for the 4 weeks he'd spend in Thailand.

That's what, 3/4 VE entries + 30 day extensions per year. What the OP suggests with his work rota would amount to 12/13 VE entries per annum, and I agree he'd run into problems with Immigration. Apart from the options and advice already given, it would assist if we knew the OP's age, as that could provide other options.

No, I never stated any such thing. It's clear, from section 4 of the Act, who is classed as responsible to file a TM30. I stated the only amendment to section 38 came in 2020 with the new TM30 regulations, which has nothing to do with the persons responsible to file, rather than when to file.

That is what you obviously named the document you downloaded. It is simply the Thai Immigration Act (1979) which you can Google to download from a number of sources in both English and Thai. Unfortunately most are downloaded as a pdf format, which apparently you can no longer post on AN, even though their own page on Laws, regulations, Police orders https://aseannow.com/topic/981135-laws-regulations-police-orders-etc/ are in pdf format. Items 22 and 23 on the above link. The only amendment to section 38 of the Immigration Act was the new TM30 regulations in relation to situations where a TM30 need not be filed. It does not alter the persons(s) responsible to file a TM30. New TM30 regulations listed item 30 from the above link.

Why Non Imm O-A and not Non Imm O? What Country are you from?

My local hospital confirmed they don't offer a podiatrist service and referred me to a local private clinic. 600 BHT per toenail. Booked in this coming Saturday.

Firstly, please understand your Non Imm O expired a long time ago, but your Immigration status is Non Immigrant. Visas cannot be extended, each year you are extending your permit of stay by 365 days from the original 90 days granted from the Non Imm O visa. Based on retirement, your extension renewal date can only be changed by leaving the Country without a re-entry permit, which cancels any permission of stay already granted. Then start from scratch again. IMO the easiest option is to renew your extension in early May, then leave without a re-entry permit when you later travel back to your home Country. Apply for the Non Imm O from your local Thai Embassy to re-enter Thailand, then continue with the 1-year extensions of stay. Example, you leave Thailand for a visit home July time for 3 weeks, re-entering with a new Non Imm O in August, on entry you'll be granted permission of stay until November. November will now be the month you annually apply for the 1-year extensions of stay.

No you didn't. I posted the link to Asean Now Laws and regulations, from which at item 22 you could have downloaded the Nationality Act. You posted a link from Asean.org. Never mind, the result is the same, if not the source.

By stating 'from our own website'. Then posting a pdf download from Thailaw

That link is from Thailaw online (not our own website) hence the question from @Maestro If you open the link I gave from (this) Asean Now website https://aseannow.com/topic/981135-laws-regulations-police-orders-etc/ the same Nationality Act could be downloaded at item 22. You've caused the confusion by stating from our own website, which we took to mean from Asean Now.

https://library.siam-legal.com/thai-law/nationality-act-acquisition-of-thai-nationality-sections-7-12/

That is a commercial website and that isn't a direct link to any info.

This page, in fact. https://aseannow.com/topic/981135-laws-regulations-police-orders-etc/

In the case of a Thai Mother, who conceived and gave birth, there is absolutely no doubt the child automatically acquires Thai nationality.

https://en.wikipedia.org/wiki/Thai_nationality_law#:~:text=Any person who is a,of the Thailand Nationality Act.

No. You'd have to be present at an Amphoe to register in a Tabien Baan and obtain the first ID card. Overseas registration of birth at a Thai Embassy to obtain a Thai birth certificate and Thai passport. Thereafter, you can renew both ID cards and passports either in Thailand or from a Thai Embassy overseas.

Google your Thai Embassy for details. This is just an example; https://thaiconsulatela.thaiembassy.org/en/page/thai-identification-card

I'm not sufficiently qualified in Thai law to state your assumption is right or wrong. What I would state is if the State announces revocation of Thai nationally is prohibited, that effectively takes away the rights of the citizen. Why would any Thai want to revoke their nationality when they can have dual nationality.

You need to appear in person at an Amphoe to register in a Tabien Baan and receive an ID card. No physical residency requirement thereafter and ID cards can be replaced/renewed through a Thai Embassy.

"The revocation of Thai nationality acquired by birth shall not be permitted." That's a pretty strong statement by the State, taking the option away from any Thai citizen.

https://www.admincourt.go.th/admincourt/en/law_detail.php?id=495 Official translation posted by the Thai Administrative courts - same PDF.