on someone's dime

alternative on someone's own dime

1. idiomaticAt the monetary expense of the person indicated.

   Their simple lives contrast sharply with the multimillion-dollar rumors surrounding Osama bin Laden. […] [T]hey weren't living large on his dime.

   2001 September 23, John Cloud, “The Plot Comes Into Focus”, in Time, retrieved 03 Jun 2019

   2 more examples

   They challenged my knowledge of the book, suggested that my article would inevitably be lousy and concluded that J. D. Salinger would be disgusted by what I was doing—all the while drinking on my dime.

   1995 December 22, Adam Green, “If Holden Caulfield Spent a Weekend in Today's Manhattan”, in New York Times, retrieved 03 Jun 2019

   But if you’re a Haitian, Mexican, or Brit and you step on American soil and are then detained by US officials, without a visa, you’ll be on the next boat back home—and on your dime too.

   2011 December 19, Sebastian Doggart, “Green Card, Golden Ticket”, in Telegraph, UK, retrieved 03 Jun 2019