But managers and employees aren't as aligned when it comes to just how beneficial it is to have buddies on the job: Twenty-two percent of employees said befriending co-workers has a "very positive" impact on productivity while only 2 percent of managers felt as strongly.

"Colleagues who are friends are more likely to support one another when presented with challenges or new responsibilities, enhancing workflow and team spirit," said Max Messmer, chairman of Accountemps. "Supervisors can increase camaraderie by sponsoring team-building events and giving staff members the opportunity to get to know each other outside of an office setting."

Messmer added, "It's especially important for new employees to have the opportunity to build rapport with staff members. Those who are able to form friendships early on the job are likely to acclimate quickly and stay on board for the long term."

The surveys were conducted by an independent research firm and include responses from 150 senior executives -- including those from human resources, finance and marketing departments -- with the nation's 1,000 largest companies and 519 full- or part-time office workers.