I processed my new work permit in Krabi in the middle of March (I came back into the country with a 3month non-B visa on March 18th). It actually got processed just as the lock-down was coming into affect. I was due to collect April 14th but I haven't been able to get to Krabi to collect it. The Labour Dept have told me it's ready to collect whenever I can get there (I live in Koh Lanta).