in work
Word family
Synonym discussion
Sense: phrase/1
The three alternatives to 'in work' (sense 1) differ in how active the work sounds. 'Under way' suggests a plan or event that has started and is moving forward — common in news reports ('construction is under way'). 'In progress' is more neutral and widely used across formal and informal contexts, including education ('exams are in progress'). 'Being done' is a looser descriptive phrase rather than a fixed expression and works best in everyday conversation ('the repairs are being done'). 'In work' sits between 'under way' and 'in progress' in formality — it is most natural in workplace and project-management settings.
Common collocations
Etymology
The phrase 'in work' combines the preposition 'in' with the noun 'work', both of which come from Old English ('in' and 'weorc'). The sense of being engaged in a task dates back to medieval usage. The training/employment sense developed in British English during the 20th century as a counterpart to 'out of work'.