Union Pacific Corporation's Chairman to Address JP Morgan Aviation & Transportation Conference

Omaha, Neb., March 15, 2007 – Jim Young, chairman of Union Pacific Corporation (NYSE: UNP), will discuss the Company’s business volumes, growth opportunities, productivity initiatives, and long-term outlook at the 5th Annual JP Morgan Aviation and Transportation Conference at 12:00 p.m. ET on Thursday, March 22, 2007 in New York City.

Interested investors may listen to the presentation via a live Internet webcast.  The audio webcast and presentation material will be available through our Web site at www.up.com under Investors.  To listen to the call, please go to our Web site at least fifteen minutes early to register and install any necessary software.  Following the live webcast, an Internet replay of the presentation will be available through Union Pacific’s Web site.

About Union Pacific

Union Pacific Corporation owns one of America's leading transportation companies. Its principal operating company, Union Pacific Railroad, links 23 states in the western two-thirds of the country and serves the fastest-growing U.S. population centers. Union Pacific’s diversified business mix includes Agricultural Products, Automotive, Chemicals, Energy, Industrial Products and Intermodal. The railroad offers competitive long-haul routes from all major West Coast and Gulf Coast ports to eastern gateways. Union Pacific connects with Canada’s rail systems and is the only railroad serving all six major gateways to Mexico, making it North America’s premier rail franchise.

The contact for investors is Jennifer Hamann at (402) 544-4227.

The statements and information contained in the news releases provided by Union Pacific speak only as of the date issued. Such information by its nature may become outdated, and investors should not assume that the statements and information contained in Union Pacific's news releases remain current after the date issued. Union Pacific makes no commitment, and disclaims any duty, to update any of this information.