No... But please clarify which Visa you mean. Are you going to apply for an Non Immigrant O-A visa - long stay - sometimes called a Retirement Visa (apply for in your home country)?
You would file an application for a one year Extension of Stay based on a new 90 day B Visa or in the last 45 days of your last 90 day stay on the multi entry B Visa. This is done at the local immigration office. Your Work Permit would have to have 8 months left on it or get a new one. You would file a TM. 7 Extension of Stay Application with required documentation. Others will be along to provide more details.
- If you really want this new B visa and WP. I strongly suggest your hire a qualified Visa Agent... Many accountants and lawyers are qualified visa agents. I believe that your case will get complicated because your current 90 day B Visa was just given to you for saying the word business... This is quite unusual and it will show that you had virtually none of the qualifying documents to get it. Work Permits are Employer Specific and most often Location Specific ... Who ever is hiring you will have to assist with providing many necessary documents related to the company that is to be your employer...
Go to the Local Thai Immigration office. Take your Rental Agreement / Lease - original and copy with photocopy of the property owner's ID and photocopy of the Tambian Ban. Ask for a Residency Certificate - which is a full page Form Letter signed by an officer plus some will put a
It is an asinine redundant requirement ... it is done because authorities have the power and authority to do so and enforce an unneeded reporting requirement ... But we do it -- well some of the time... some of the places ... Over the entire country I venture to say it is not enforced all that much ... BUT if you live and report in one of Those jurisdictions - then you have to do it or face problems. Personally I have yet to file a TM.30 ever ... even though I have traveled all over Thailand in the past three years... It is the bad luck of the draw if you live in the stringent jurisdictions.... Do what you have to do ...
95% of the Native English language teachers regardless of having a license or not are doing 100% better than any English language trained Thai Teacher... Over 4 years I have have made the acquaintance of five Thai English language school teachers -- ONE could speak decent English. The others could not hold a three word conversation ... and even those three words were barely understandable... It is a matter of job protection. The internal workings of the Government school systems aim very hard to retain every teaching job for Thai Nationals ... Understandable ... but it leads no where when learning English.