United Healthcare 2006 Annual Report Download - page 115

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Report of Management on Internal Control over Financial Reporting as of December 31, 2006
The Company’s management is responsible for establishing and maintaining adequate internal control over
financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. The
Company’s internal control system is designed to provide reasonable assurance to our management and board of
directors regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles. The Company’s internal control over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in
reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company;
(ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the
Company are being made only in accordance with authorizations of management and directors of the Company;
and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use
or disposition of the Company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that
controls may become inadequate because of changes in conditions, or that the degree of compliance with the
policies or procedures may deteriorate.
Management assessed the effectiveness of the Company’s internal control over financial reporting as of
December 31, 2006. In making this assessment, we 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 and those criteria, we believe that, as of December 31, 2006, the Company maintained effective
internal control over financial reporting.
The Company’s independent registered public accounting firm has audited management’s assessment of the
effectiveness of the Company’s internal control over financial reporting as of December 31, 2006, as stated in the
Report of Independent Registered Public Accounting Firm, appearing under Item 9A, which expresses
unqualified opinions on management’s assessment and on the effectiveness of the Company’s internal controls
over financial reporting as of December 31, 2006.
/s/ S
TEPHEN
J. H
EMSLEY
Stephen J. Hemsley
President and Chief Executive Officer
/
S
/G
EORGE
L. M
IKAN III
George L. Mikan III
Executive Vice President and Chief Financial Officer
/
S
/E
RIC
S. R
ANGEN
Eric S. Rangen
Senior Vice President and Chief Accounting Officer
March 6, 2007
New York Stock Exchange Certification
Pursuant to Section 303A.12(a) of the NYSE listed company manual, the Company submitted an unqualified
certification of its Chief Executive Officer to the NYSE in 2006. We have also filed, as exhibits to this Form
10-K, the Chief Executive Officer and Chief Financial Officer Certifications required under the Sarbanes-Oxley
Act.
113