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Union Pacific Corporation Invites You to Join Its Fourth Quarter Earnings Release Broadcast

Omaha, Neb., December 23, 2010 – In conjunction with Union Pacific Corporation's (NYSE: UNP) Fourth Quarter 2010 Earnings Release, you are invited to listen to its presentation that will be broadcast live over the Internet or via teleconference on Thursday, January 20, 2011 at 8:45 a.m. Eastern Time.

What:                 Union Pacific Corporation's Fourth Quarter 2010 Earnings Release

When:                Thursday, January 20, 2011 at 8:45 a.m. ET

Where:                www.up.com (under Investors)

How:                   Live over the Internet - - Simply log on to the Web at the address above

OR                       Dial-in telephone access
                                        Domestic: 877/407-8293
                                        International: 201/689-8349 

If you are unable to participate during the live teleconference, the call will be archived on Union Pacific's website at http://www.up.com.  To access the replay, click on Investors.  An MP3 downloadable audio file will also be available at the same location.

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. Union Pacific serves many of the fastest-growing U.S. population centers and provides Americans with a fuel-efficient, environmentally responsible and safe mode of freight transportation. Union Pacific's diversified business mix includes Agricultural Products, Automotive, Chemicals, Energy, Industrial Products and Intermodal. The railroad emphasizes excellent customer service and offers competitive 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.

For further information, contact Jennifer Hamann, (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 Such information by its nature may become outdated, and investors should not assume that the statements and information contained in Union Pacific's news releases remain current after the date issued.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.