In the past 5 days, some organizations who can afford it have shut down offices and are providing just that. I'm not at liberty to expose info on who, because I'm not sure it's been made public or not.

Are any those organisations like Walmart or McDonalds that employ a lot of people who often don’t have any savings and any margins at all?

Definitely not. When common franchise chains close, and people can't work, nor shop, is when it will be too late, and dire.

Maybe not necessary to close the whole shop, just make the workers with symptoms afford to stay away.

I also work for one such organization.

So, assuming you won't name the org you are working at, what prevents you from naming some of the others?