U.S. Xpress Enterprises Inc. has agreed to hire Buck Consultants to advise its health plans for 2 years.

U.S. Xpress, Chattanooga, Tenn., a transportation company, provides health coverage for about 8,000 U.S. employees.

Buck, New York, a unit of Affiliated Computer Services Inc., Dallas, will help U.S. Xpress manage its medical, prescription drug, dental, and disease management programs.