Bob Greenberg Advertising Week Video: The Challenge Of Retaining Talent (VIDEO)

With the breadth of young talent in the advertising industry, retaining top performers is one of the key issues facing advertising agencies today. R/GA CEO Bob Greenberg chatted with AOL's David Shing during Advertising Week to discuss what he said is one of the biggest challenges for his -- or any -- advertising agency.

Since forming R/GA in 1977, Greenberg says the key to his success has been keeping the agency "creatively-driven."

"We have a huge creative group, and we also think of classifications like technologists being creatively-driven as well," Greenberg told Shing. R/GA now has approximately 950 employees across four buildings in New York.

Greenberg said that one of his biggest challenge is retaining talent from the millennial generation.

"They tend to move from one agency to another," Greenberg said of millennials. "This year we had to hire in New York 500 people to net 200, so there's a lot of expertise that they'll need in terms of talent acquisition, retention, and how they're organized."

To help retain employees, Greenberg said R/GA has a program called R/GA University, which operates inside the agency.

"So many of the people that work for me are adjunct professors, so they teach them new things," he said. "We're organized around groups, and I think people like to be part of a group more than they like to be on their own."