What can managers in white-collar firms learn from roughnecks and roustabouts on an offshore oil rig? That extinguishing macho behavior is vital to achieving top performance. That’s a key finding from our study of life on two oil platforms, during which we spent several weeks over the course of 19 months living, eating, and working alongside crews offshore.

A version of this article appeared in the July–August 2008 issue of Harvard Business Review.