Are employees engaged in their work? Are they committed to their employer? Are they going above-and-beyond with their clients? That's what satisfaction does. If you're looking for the happiest employees, look no further than the Insight Sourcing Group, which unseated Bain for the highest satisfaction rate. Not surprisingly, Putnam Associates fared well in this category, boosting their score by over .15 of a point. However, the big news came out of McKinsey, whose average rocketed from 9.052 to 9.350.