workaholic
work‧a‧hol‧ic /ˌwɜːkəˈhɒlɪk $ ˌwɜːrkəˈhɒː-/
noun [countable]
work‧a‧hol‧ic /ˌwɜːkəˈhɒlɪk $ ˌwɜːrkəˈhɒː-/
noun [countable] Word Family: noun: work, workaholic, worker, working, WORKINGS; adjective: workable ≠ unworkable, overworked, working; verb: work, rework
informal someone who chooses to work a lot, so that they do not have time to do anything else