Headquartered in St. Louis, this Omnicom-owned communications shop boasts more than 2,400 employees in 80 offices in 28 countries. Its teams are composed of people all over the map, and 78% of its top accounts are served from multiple countries -- almost half of them on different continents.
Everyone, from clients to the employees, appreciates that kind of backup. "Any client need is met ... because of collaboration with other practice areas across the globe," wrote one employee. "[We're] truly a one-stop shop, given the collective knowledge."