Transcript of the above video: 

As the title of this video suggests, we are discussing work authorization here in Thailand. This is one of those things I get a lot of inquiries on. I see a lot of comments that are a lot of times misinformation, they are not really talking about the reality of the situation, and it regards work authorization. A lot of people like to, "well what if I am over there and I don't really do anything, but", and it's like hey, you are trying to play around the notion of working. I have made the videos in the past as to the definition of work in Thailand where you could argue that 'breathing' is working in Thailand.

That said, I thought of making another video here and I just thought, let's just go to the horse's mouth. This is from MFA, Ministry of Foreign Affairs, mfa.go.ph. Quoting directly: "Non-Immigrant B Visa (for Business and Work) under:

Visa Issuance 

1.1 Again, this is mfa.go.th, so this is from the Government's own website: "Foreigners who wish to work, conduct business or undertake investment activities in Thailand, must apply for a Non-Immigrant Visa at the Royal Thai Embassy or Consulate-General. Various categories of Non-Immigrant Visas are currently provided to meet the needs and qualifications of individual persons. These include business-approved Visa category "B-A", Investment and Business Visa "IB". Holder of this type of Visa wishing to work in Thailand must be granted a Work Permit before starting work in Thailand. The fee is 2,000 baht for single-entry with three-month validity and 5,000 baht for multiple entries with one-year validity." 

So again that's pretty much from the horse's mouth again, "must be granted a work permit before starting work". I think that pretty well sums it up, and “must be granted a Work Permit in order to work legally.” As we have discussed in other videos, there is a lot of talk out there about "oh this is inherently authorized, that's inherently authorized." Interior has come out and said if it impinges upon the Thai Economy, you need a Work Permit in order to undertake whatever that endeavour is. 

So the thing to take away from this video unequivocally is if you wish to work in Thailand even if you have a Business Visa, it is best to get a Work Permit.