Union Pacific 2009 Annual Report Download - page 96

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96
MANAGEMENT’S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL
REPORTING
The management of Union Pacific Corporation and Subsidiary Companies (the Corporation) is
responsible for establishing and maintaining adequate internal control over financial reporting (as defined
in Exchange Act Rules 13a-15(f) and 15d-15(f)). The Corporation’ s internal control system was designed
to provide reasonable assurance to the Corporation’ s management and Board of Directors regarding the
preparation and fair presentation of published financial statements.
All internal control systems, no matter how well designed, have inherent limitations. Therefore, even
those systems determined to be effective can provide only reasonable assurance with respect to financial
statement preparation and presentation.
The Corporation’ s management assessed the effectiveness of the Corporation’ s internal control over
financial reporting as of December 31, 2009. In making this assessment, it used the criteria set forth by
the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control –
Integrated Framework. Based on our assessment, management believes that, as of December 31, 2009,
the Corporation’ s internal control over financial reporting is effective based on those criteria.
The Corporation’ s independent registered public accounting firm has issued an attestation report on the
effectiveness of the Corporation’ s internal control over financial reporting. This report appears on the
next page.
February 3, 2010