Anonymous participant 909 not true. i did not have to do that. it is probably good idea to have it but for sure i did not have anywhere in my application about remote work or permissions to work from Thailand.(LA consulate)
In Thailand, the current year according to the Buddhist Era (BE) calendar is 2568. This is because the Thai calendar is 543 years ahead of the Gregorian calendar, with the starting point being the year Buddha attained Nirvana.
I did not specify in my contract that I am allowed to work remotely. It was just an official letter from my company stating that I am a full-time employee, etc - DTV was approved
in my case ( LA too) for company profile i attached business registration document. you might be able to get it from California Secretary of State website.