Second, you have to work for an employer who's willing to relinquish control over your physical whereabouts. This is something that a lot of bosses and managers are wrestling with. Companies have to still manage the work and see that it gets done in a timely manner and exercise the necessary quality controls. Most firms are simply not set up to do this with virtual employees. Managers are used to being able to observe the work process in real time.
Physical interaction is easier.
Well, not easier so much as if you're managing by crisis you can get everyone together with less planning if they're all in the same building. There's the cost involved with getting the necessary equipment installed at the virtual employee's house. The computer, line conditioners, telephone lines, Internet connections. Not only the cost but also the ongoing maintenance is an issue since the IS department is going to resist the idea of making house calls. These concerns are very real to employers.