To be total in your work is a totally different thing. To be total in your work is not addiction, it is a kind of meditation. http://goo.gl/Vh3SX
When you are totally in your work, your work has a possibility of perfection, you will have a joy arising out of a perfect work.
If you can be perfect and total in work, you can be total in no-work just sitting silently, totally silent. You know how to be total.
You can close your eyes and you can be totally in. You know the secret of being total. So to be total in work is helpful in meditation.