Some people take pride in the fact that they never take sick days. Of course, this sounds great for companies, but the true fact is that they end up spreading their illness to other employees, especially when they are trapped in the same office all day.
If you are self-employed you don’t have that problem, in fact, if you work from home you’ll never have to phone in sick again! However, no-one is superhuman, you are still going to get sick even if you work from home. Once this happens you’ll need to have a plan of action.