The ball pit at D.C.'s "Living Social" office is workmillennial style.
Born loosely between 1980 and 2000, these members of the workforce are changing the way businesses do business.
"It's not the boss leading every meeting and we all listen and nod our heads," said Katie McKeon, 26, who is a Property Manager.
Smart, tech savvy and confident, they can leave baby boomers in the dust.
"You either know what button to push next or you don't--and if you don't, you're stuck," said Judy Oakley, a baby boomer.
So many millennials, who grew up getting awards for everything, feel entitled.
"Sometimes their demands about the workplace and their expectations for salary, and position and title, might be a little overreaching," said Stephanie Brown, the Vice President of HR at Real Estate firm Akridge.
Companies are even hiring consultants to help handle millennial employees, because they were running into workplace clashes.
Mary Abbajay says one problem is the hovering so-called "helicopter" parents.
"We've had parents show up for interviewsthey'll negotiate the salary, they will call the workplace if you know, say, Johnny doesn't get a certain vacation time," Abbajay said.
Some companies actually have 'parents' day to keep the parents, and their children, happy.
Millennials are changing the work "space," too. The General Services Administration, for instance, is making its 18th street building millennial friendlyno offices, just open, collaborative spaces.
"I don't have a cluttered desk to come into work toit's great," said millennial Jim Geoghegan.
Work days filled with communal pats on the back--for millennials who want reinforcement, feedback, and fun on the job.
If their jobs aren't meaningful, millennials are more apt to just quit and go elsewhere--but companies say they have to meet them halfway, because at 75 million, millennials are the workforce--and the leaders of the future.