This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One who has a compulsive and unrelenting need to work.

n. A person who feels compelled to work excessively.

adj. In the nature or manner of a workaholic.

n. person with a compulsive need to work

"The term workaholic very aptly describes this addiction."

compulsive   

workaholism    ergomania   

alcoholic    anabolic    bucolic    diastolic    folic    frolic    hyperbolic    melancholic    metabolic    nonalcoholic   

otaku    doodler    javadoc    non-geek    worrier    forty-four-year-old    procrastinator    jmaki    desease    right-winger