Do you have a lazy employee?
The Bootstrapper Blog has 20 Fail-Proof ways to expose a lazy employee.
Now there are a couple of problems with this. First of all if you have only one employee and they are the one that is lazy, trying to get rid of them is going to be a lot of hassle and you will have to do everything yourself until you find a new employee.
The other thing to consider is what some of these items will have on the moral of your people. While you may have one bad employee by installing cameras or some of the other items talked about could make other employees feel as though do not trust them.
I once worked for a rental car company and the owner of the franchise wanted to install cameras on the front counter to insure that the employees were working constantly and not standing around. Guess what, it did nothing to the lazy employee, it just caused the other employees to feel like the owner hated them and the company loss several good employees.
The best thing I could suggest is to be observant and make sure to make sure everything you do is written down and documented. Many times a lazy employees fellow employees will take care of the situation themselves.