If we don't use our working time to earn money, we are in effect losing money.
time is money
One's time is a valuable commodity, as in I can't stay home and wait any longer; time is money, you know. This proverbial term goes back to one first recorded in 1572, time is precious, in a discourse on usury.
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|a scrap or morsel of food left at a meal.|