None of the major couriers are going to shut down. The transportation of goods (national and international) is "Numero Uno" in a "Natural Emergency".
Just study the strike in "97"..two weeks of our inactivity was affecting the national economy and destroying the capabilities of the other couriers, we are a lot bigger now.
Forget about layoffs, all people on board. These projected testing kits and toilet paper, etc have to be transported by somebody, Santa and the elfs only works in December...
"Work Smarter not Harder" and protect yourselves, it is really up to each individual, and any victim rights entitlements has been temporary suspended. We are all in this together...