This Is How Millennials Want to Be Managed The 'Just do what I say' approach might not work.

Lisa Orrell is a hot property. The author of Millennials Incorporated is one of a handful of trainers and consultants who advise companies on leading the newest generation of workers.

"I've had more calls for seminars for managing Millennials in the last two years than the previous five or six," says Orrell, whose clients include Cisco, eBay, Johnson & Johnson and Blue Cross Blue Shield.

Also known as Generation Y, the 80 million Americans born between the early 1980s and the early 2000s began entering the work force nearly 15 years ago. But now they're taking it over, with experts saying they'll comprise nearly half of U.S. employees by 2020. And leading them successfully is an altogether different proposition than leading previous generations.