Fortune 1000 rank: 520Best Companies rank: 54No. of U.S. employees: 15,674
Most common salaried job: Project Manager
Avg. pay in that job: $100,998
What makes it so great? Employees own all the stock in this engineering-construction firm, which does everything from decommission nuclear plants to help London gear up for the 2012 Olympics.
NEXT: Adobe Systems