english
1
general::
Phrase(s): at work 1. at one’s place of work. • I’m sorry to call you at work, but this is important. • She’s at work now. She’ll be home at supper time. 2. working [at something]; busy [with something]. (See also at play.) • Tom is presently at work on his project. He’ll be finished in a half hour. • Don’t disturb me when I’m busy at work.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Engaged in a job or other activity, as in The contractor is hard at work on the new building, or The little boy was fascinated to see the washing machine at work. [Early 1600s] 2. At one's office or other place of business, as in Is it all right if I telephone you at work? [Late 1800s]
American Heritage Idioms