I will inform status your work permit.
1. I will pick up your work permit letter at Ministry of Labor on Tuesday April 1,2014 .
2. Another the documents as you will bring back to Japan for submit application non-B visa at the Royal Thai Embassy in Tokyo.
I can prepare all complete within Tuesday April, 1st 2014 when you stay in BKK. Because I must wait end of this month to prepare copy Tax Certified at Revenue Department and pick up Social Security distribution copy certified same day.
If you have any question pls. let me know