busman's holiday

UK: /ˈbʌsmənz/ US: /ˈbʌsmənz ˈhɑlɪˌdeɪ/

WordReference Random House Learner's Dictionary of American English © 2025

bus•man's hol•i•day /ˈbʌsmənz ˈhɑlɪˌdeɪ/  n. [countable]

1. a vacation from work spent in an activity similar to one's work.

WordReference Random House Unabridged Dictionary of American English © 2025

bus′man's hol′iday, 

1. a vacation or day off from work spent in an activity closely resembling one's work, as a bus driver taking a long drive.

• 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::

busman's holiday / ˈbʌsmənz/ noun

1. a holiday spent doing the same sort of thing as one does at work

Etymology: 20th Century: alluding to a bus driver having a driving holiday