make it worth while
make (something) worth (one's) while
To ensure that something is beneficial to one or not a waste of one's time. I was reluctant to do research at a different library, but the librarian totally made it worth my while by helping me find a ton of books on my topic! If you have to go, you might as well make the trip worth your while by spending a few extra days just relaxing.
make it worth someone's while
Euph. to tip or offer special (usually extra) payment to someone. I made it worth the waiter's while to give us good service. If you'll throw a few contracts my way, I'll make it worth your while.