Fortune's 100 Best Companies To Work For

Call it a hat trick: for the first time in the 15-year history of Fortune's Best Companies to Work For list, we have a three-time champion, as Google reclaims the top spot for workforce happiness (it debuted on our list at no. 1 in 2007, and stayed there in 2008). We've had a couple double headers before -- Container Store, SAS and Edward Jones have all clinched the no. 1 spot twice -- but Google this year marks the first three-peat.

And while the perks of the Googleplex are epic -- everything from bocce ball to a bowling alley, from free food to free laundry -- what set it apart from the competition was one clear thing: its scores on our employee Trust Index, a blind survey of random employees that asks them about their general job satisfaction, attitude toward management, and sense of employee camaraderie.