At least a lot of IT jobs are just as easy to do from home as sat in the office, so there's no talk of shutting my employers down. In fact, what with helping all our clients rush to get VPNs and soft phones running, I wouldn't be surprised if we have quite a good month or two.
I'm just not sure how it's going to work for companies that (eg) set up trade shows, and if they can't make money, they probably can't pay their IT supplier...