Age ;limit for visa

You have to see it in different angles, the problem is not about Visa ( you can work on B Visa as well as if you are married to a Thai partner on O Visa ) but about to get Work Permit

- to get work permit there is no limitation, but company here employ young people, however in many international schools in Thailand you can find teacher over 60 years old
- If you have your business, you can work until you die, there are no limit but your health will maybe not allow you that
- regarding social security in thailand it is different and stated as :
" The insured person is the employee who starts working at the age of not under fifteen and not over sixty years old in the enterprise with 1 or more employees ".