It’s not about the perks. Sure, it’s nice to have a gym in your offices or, say, free ice cream. But what makes a job meaningful depends on a few key qualities: a sense of mission; trust (from managers) and autonomy (for workers); and a culture of teamwork and communication. That’s what emerges from 52,000 surveys of employees at small and medium-size companies, conducted by our partner, Great Place to Work. Read these rankings for insights on managing and consider this: The revenue growth at the companies on the list averaged three times that of those that were surveyed but didn’t make the cut. Read more.