It's not for everyone, but I have always enjoyed being able to choose whether I wanted to work standing up or sitting down. Typically, I'd start the day standing up - until my coffee took hold. In all, I averaged about 75% standing and 25% sitting during the time at my desk. Meetings are a whole different issue. If you have the opportunity, try it. If you can extend the option to your workers, you'll find them more productive. Whether they choose to work standing, sitting, or a combination they will appreciate your interest in them.