Ditch the gift cards and office pizza parties. You can motivate others at work simply by picking up the phone, according to Verizon Communications CEO Hans Vestberg.

"On the back of my [work] badge, I have 30 names. These are the people that make a difference, that I need to know at Verizon, internal or external," Vestberg, 58, said at the Fast Company Innovation Festival 2023 on Tuesday. He talks to each of those people "once a week," he added.