I'm a foreigner so I don't fully understand this, but here's my take: 1) Tesla is restarting the factory against local rules saying they can't, because their competition is in different localities with their local rules saying they can, and Tesla is at a disadvantage. 2) It's basically illegal for the workers to go to work, but Tesla is still insisting they do this? 3) the local council has said they won't do enforce…
The email is just trying to intimidate people into coming in or not filing for unemployment.
The normal process is that an unemployed person files for unemployment and also reports earned income and rejected job offers. Both can negatively impact their unemployment claims. Unemployment actually costs companies money.
Normally turning down the same job with the same pay you were laid off from would disqualify you from receiving unemployment. You'd need a great reason. A pandemic, and a shelter in place order are both great reasons. I'm assuming not showing up the factory would not disqualify you.
But CA's unemployment system is overloaded right now. I really wouldn't want to be dealing with it, let alone have my claim be a special case.