I'm planning to be in thailand for about 5 yrs years so I can finally have the time to write a few books (technical content). Do I need to have the work permit for doing this?

I've seen some of your posts around, so I wouldn't call you a troll in general --- but here, you must be trolling, right or what?

???? So what's your answer?....Yes or no?

Anyone else?

Thanks in advance

???? So what's your answer?....Yes or no?

Anyone else?

Thanks in advance

to strictly adhere to the law, you need a WP to work on anything. in practice, who would ever know? publish under a pen name if you are worried.