Workaholic

[Lanell]

A person who is addicted to working, to the point where their life consists only of work and sleep. They have very few friends, if any, and some rarely see their own families.
[Workaholics] often suffer from [fatigue], sleeping disorders, stress and stress-related ailments, and some eventually work themselves to death. Workaholics are a common sight in some [East Asian] countries, but are less prevalent in North America and even less in Europe.