A workaholic is a person who works compulsively. The term originates from alcoholism. The person works at the cost of their sleep, and social functions such as meeting friends or family. While the term doesn't necessarily imply that the person enjoys their work, it can imply that they simply feel compelled to do it.

There is no generally accepted medical definition of such a condition, although some forms of stress, impulse control disorder, obsessive-compulsive personality disorder, and obsessive-compulsive disorder can be work-related; ergomania is defined as "excessive devotion to work especially as a symptom of mental illness".

Hustle culture is a neologism for workaholism, related to excessive devotion towards one's work to the exclusion of every other aspect of one's life, creating an unhealthy work–life balance.

 

Note:   The above text is excerpted from the Wikipedia article Workaholic, which has been released under the GNU Free Documentation License.