Définition et Signification de "busman's holiday"

What is the origin of the idiom "busman's holiday" and when to use it?

The phrase "busman's holiday" originated in the 19th century and refers to a situation where someone spends their time off doing the same type of work they do for a living. The term "busman" refers to a bus driver, but the phrase can be applied to any profession. It is used to describe a situation where someone spends their leisure time doing the same type of work they do for a living.