@Rachel ******

Thank you, Rachel. I Will do.

@Peter ******

I have sent them a request. Although there is no option to choose an office in Bangkok.

The truth is: If you have a Non-O visa based on marriage, you should legally be able to work in Thailand, as long as your employer obtains a work permit for you. There is no need to leave the country to obtain a business visa, as your marriage visa grants you the right to reside and work in Thailand, as long as you follow the work permit procedures.

@Wolf *****

The employer is probably not fully informed about the flexibility of the marriage visa and is used to handling business visas (Non-B), which are more common in the work field. It's important to explain to them that with the Non-O marriage visa, there is no need to switch to a business visa.