Tough act to follow for Wallmart... The tech industry has a huge advantage here.

But there are jobs where you'd have the possibility to do this in industries that will take some re-arranging to make it work. Legal and financial for instance, call centers (some technical issues), most design and creative work.

The impossible ones are anything involving care, production and logistics. Even retail could in principle be done but it would require a massive shift on the part of the consumer. Going shopping is very much ingrained and retooling that industry for home delivery is neither fast nor simple when done on a massive scale.

The problem is, Walmart can't shut down. They're the only grocery/drug store left in a lot of smaller towns. People depend on them for necessities. They can shut down most of their departments, the non-essential ones, but they're gonna need the grocery and pharmacy sections to remain open.

They don't need to. If office workers stay home and people can go shopping outside of rush hour, grocery workers should be mostly safe. Especially Walmarts tend to be rather large, it's certainly avoidable to be in close contact with customers there.

Many production and logistics workplaces can probably implement distancing policies. Care, not so much...

Microsoft only recommended WFH in SF/Seattle so far, other sites waiting for it.

WFH is definitely in effect for Microsoft China...

I'm in Vancouver & have been supported in following the Seattle advice