NuStar Energy L.P.

Employees say: “The sense of family and caring trickles down from the highest level of executive management to all employees and their personal communities. NuStar's Guiding Principles are based on good moral values and provide the foundation for strong business core values. We are all inspired to care for our company, co-workers, and our communities as cultivated by the caring culture created by our founder, Bill Greehey.” Read the Great Place to Work review here.