Minimum wage in Pattaya is 354 per 8-hour day, 6-day week.
Overtime is "time and a half", so a 12 hour day is ~620.
The seventh day would be double-time, for the first 8 hours, and triple-time after that, so 12 hours on the seventy day would be ~1,239
So minimum wage for 12 hours a day, seven days a week would be (I think) 21,476