Are you trying to find a way to keep your employees productive at work? One way is to look at a program called ActivTrack. This program if used to keep your employees on task is a great tool. You will be able to monitor their unproductive time and try to find a solution to improve productivity.
Here is a great article that goes over and talks about the benefits of using ActivTrack.
There are other ways to improve productivity as well. Such as looking at content filtering. I have used AVG content filtering in the past for many clients and they were able to set up rules to help keep their employees on track.
If you are interested in watch a youtube video that gives you a brief introduction and walkthrough I have included a link below.