a Sisyphus endlessly pushing a stone uphill and beginning again when it rolls down

A workaholic is a person addicted to work. This addiction may be pleasurable to the victim or it may be burdensome and troubling.

"Workaholic" was the third single released by the Dutch act 2 Unlimited from the album Get Ready!. The single reached number 4 in the UK and number 26 on the US Dance chart.

person with a compulsive need to work

a person who works very hard