"Dime" and "Time" sound very close in English. But one means an amount of money, and the other means an amount of time.
To say something is on [someone's] "dime" means that they will pay for it. The cost is theirs. I heard this recently, when my brother called me. He said the call was on his work place's "dime." That means I did not have to pay for it.
But if something is on someone's "time," that is on another matter! Your boss may say, "You must do that on your own time." You may question your boss: "Does that mean I get paid or not paid?" "Must I do it at home, or here at work?"
Another expression in English is: "Time is money." So, to do something on one's own time is also to do it on one's own "dime" --- even though it may cost much more than 10 cents (a dime).
To say something is on [someone's] "dime" means that they will pay for it. The cost is theirs. I heard this recently, when my brother called me. He said the call was on his work place's "dime." That means I did not have to pay for it.
But if something is on someone's "time," that is on another matter! Your boss may say, "You must do that on your own time." You may question your boss: "Does that mean I get paid or not paid?" "Must I do it at home, or here at work?"
Another expression in English is: "Time is money." So, to do something on one's own time is also to do it on one's own "dime" --- even though it may cost much more than 10 cents (a dime).