Spend time. Save time. Waste time. Buy time. — Time is counted like money.
Time well spent. — The time produced something worth its cost.
On the clock. Off the clock. On company time. — Paid time and unpaid time.
I won’t take up much of your time. — A promise made before asking for something.
I’ll give you ten minutes back. — We will end the meeting early.
Thanks for your time. — A standard thank-you at the end of a call or a meeting.