Fortune.com Geoff Colvin, editor at large interviewed Brian Formato for this article. Below is an excerpt and link to the full article.

“If someone quits on you, then what happens?” So asks Brian Formato, CEO of the HR consulting firm Groove Management. “Are you not allowed to backfill the role? In a number of instances, the company says no, you can’t.” Making matters worse, the employees most likely to leave are typically the best performers because they're the ones who can most easily find employment elsewhere, even in today’s tightfisted environment.

Read the full article: Hiring Freezes