How do some companies create loyalty between themselves and their employees while others watch talented staff and executives click through a turnstile?

According to the guys who founded LinkedIn, the secret to corporate loyalty lies in creating a tour of duty framework.

I recently interviewed David Keil (pronounced Kyle), founder and chief executive of QASymphony. We talked about how he's applying the tour of duty concept at his company.

David discovered tour of duty on a flight to Vietnam when he opened the book The Alliance: Managing Talent in the Networked Age by LinkedIn founders Reid Hoffman and Chris Yeh. Technology companies are particularly vulnerable to high turnover, so when Hoffman and Yeh started LinkedIn, they decided their new company would be the outlier.

That's why they created a tour of duty.