Ergomania is the word for the excessive devotion to work—also known as workaholism—especially as a symptom of mental illness.
But too much work can be toxic. Working very long hours can be bad for our health. Ultra-long hours can kill. Ergomania can lead to problems such as depression, anxiety and addiction and can cut us off from friends and family, leaving us with only colleagues. If work disappears, work obsessives often have nothing to fall back on. A job loss can become a deep existential crisis.
— André Spicer, The Guardian, 28 Jan. 2019
Ergo- derives from the Greek ergon, meaning “work,” and gives us the noun ergonomics for the science concerned with how things (such as computers, cars, or furniture) are designed and arranged so that humans can use them in a way that avoids placing unnecessary stress on the body.