Phyllis Korkki writes a Q&A-style article for The New York Times about the real phenomenon of being a workaholic. These are people who are “addicted to incessant activity” and want to continue working even when they know it will be to the detriment of the work itself.
A Good Bad Habit?
It can be difficult to break the habit because working excessive hours is often a source of praise among employers, not of scolding. But such overwork can be damaging to the company, not just because the quality of the work is suspect, but also because such people might expect the people working below them to put in similar hours. Professional help may be necessary to help a workaholic break the habit. For more details, here is the full Q&A: http://www.nytimes.com/2007/10/21/jobs/21career.html