UNDERWRITING AGREEMENT

Exhibit 1.1

Execution Version

Burlington Northern Santa Fe Corporation

UNDERWRITING AGREEMENT

March 11, 2008

Banc of America Securities LLC

Barclays Capital Inc.

Wachovia Capital Markets, LLC

As Representatives of the several

Underwriters named in Schedule I hereto

Ladies and Gentlemen:

Burlington Northern Santa Fe Corporation, a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein (the “Underwriting Agreement”), between the Company on the one hand and you, as Representatives of the several underwriters named in Schedule I hereto (the “Underwriters”), on the other hand, to issue and sell to the Underwriters the Securities specified in Schedule II hereto (the “Securities”). All provisions contained in the document entitled Burlington Northern Santa Fe Corporation Underwriting Agreement Standard Provisions (Debt Securities), a copy of which is attached hereto (the “Standard Provisions”), are hereby incorporated by reference in their entirety and shall be deemed to be a part of this Agreement to the same extent as if such provisions had been set forth in full herein. Unless otherwise defined herein, terms defined in the Standard Provisions are used herein as therein defined.

The Issuer Free Writing Prospectuses referred to in Section 6(a) of the Standard Provisions are set forth on Schedule III hereto, and any additional documents incorporated by reference referred to in Section 2(d) of the Standard Provisions are set forth on Schedule III hereto. The forms of final term sheets referred to in Section 5(a) of the Standard Provisions are attached hereto as Schedule IV. Each reference to the Representatives herein and in the Standard Provisions shall be deemed to refer to you. The Representatives are to act on behalf of each of the Underwriters of the Securities.

Subject to the terms and conditions set forth herein and in the Standard Provisions, the Company agrees to issue and sell to each of the Underwriters, and each of the Underwriters agrees, severally and not jointly, to purchase from the Company, at the “Time of Delivery” (as specified in Schedule II hereto) and at the purchase price to the Underwriters set forth in Schedule II hereto, the principal amount of Securities set forth opposite the name of such Underwriter in Schedule I hereto.

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For the purposes of this Agreement, the following information is the only information furnished to the Company by any Underwriter for use in the Basic Prospectus, any Preliminary Prospectus, any Issuer Free Writing Prospectus or the Prospectus:

If the foregoing is in accordance with your understanding, please sign and return to us seven counterparts hereof, and upon the acceptance hereof by you, on behalf of each of the Underwriters, this letter and such acceptance hereof shall constitute a binding agreement between each of the Underwriters and the Company. It is understood that your acceptance of this letter on behalf of each of the Underwriters is pursuant to the authority set forth in a form of Agreement among Underwriters, the form of which shall be submitted to the Company for examination upon request, but without warranty on your part as to the authority of the signers thereof.

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On behalf of itself and each of the other Underwriters

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Schedule I

ScheduleI-1

Schedule II

5.75% Notes due March 15, 2018

Title of Securities:

5.75% Notes due March 15, 2018 (the “Notes”)

Aggregate Principal Amount:

$650,000,000

Price to Public:

99.767% of the principal amount, plus accrued interest, if any, from March 14, 2008

Purchase Price by Underwriters:

99.117% of the principal amount, plus accrued interest, if any, from March 14, 2008

Specified Funds for Payment of Purchase Price:

By wire transfer to a bank account specified by the Company in immediately available funds

Indenture:

Indenture, dated as of December 1, 1995, between the Company and The Bank of New York Trust Company, N.A., as successor in interest to J.P. Morgan Trust Company, National Association, as successor in interest to The First National Bank of Chicago, as Trustee (the “Trustee”), as supplemented by the Second Supplemental Indenture, to be dated as of March 14, 2008, between the Company and the Trustee

Maturity: March 15, 2018

Interest Rate: 5.75% per annum

Interest Payment Dates:

March 15 and September 15, commencing on September 15, 2008

Redemption Provisions:

Redeemable as a whole or in part, at the option of the Company, at any time, at a redemption price equal to the greater of (i) 100% of the principal amount of the Notes and (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the Notes discounted to the redemption date semiannually (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 35 basis points, plus in either case any accrued and unpaid interest on the Notes to the date of redemption. The Independent Investment Banker (as defined below) will calculate the redemption price.

Schedule II-1

“Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semiannual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date.

“Comparable Treasury Issue” means the United States Treasury security selected by the Independent Investment Banker as having a maturity comparable to the remaining term of the Notes that would be used, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity with the remaining term of the Notes.

“Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

“Comparable Treasury Price” means, with respect to any redemption date, (i) the average of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) on the third business day preceding such redemption date, as set forth in the daily statistical release (or any successor release) published by the Federal Reserve Bank of New York and designated “Composite 3:30 p.m. Quotations for U.S. Government Securities” or (ii) if such release (or any successor release) is not published or does not contain such prices on such business day, (A) the average of the Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (B) if the Trustee obtains fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the third business day preceding such redemption date.

“Reference Treasury Dealer” means each of Banc of America Securities LLC and Barclays Capital Inc. and their respective successors; provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall replace that former dealer with another Primary Treasury Dealer.

The Company will mail notice of any redemption between 30 days and 60 days before the redemption date to each holder of the Notes to be redeemed.

Unless the Company defaults in payment of the redemption price, on and after the redemption date interest will cease to accrue on the Notes or portions of the Notes called for redemption.

Change of Control Provisions:

If a Change of Control Repurchase Event occurs, unless the Company has exercised its right to redeem the Notes as described above, the Company will be required to make an offer to each holder of Notes to repurchase all or any part (in integral multiples of $1,000) of that holder’s Notes at a repurchase price in cash equal to 101% of the aggregate principal amount of Notes repurchased plus any accrued and unpaid interest on the Notes repurchased to, but not including, the date of repurchase. Within 30 days following a Change of Control Repurchase Event or, at the Company’s option, prior to a Change of Control, but after the public announcement of the Change of Control, the Company will mail a notice to each holder of Notes, with a copy to the Trustee, describing the transaction or transactions that constitute or may constitute the Change of Control Repurchase Event and offering to repurchase Notes on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the date such notice is mailed. The notice shall, if mailed prior to the date of consummation of the Change of Control, state that the offer to purchase is conditioned on a Change of Control Repurchase Event occurring on or prior to the payment date specified in the notice. The Company will comply with the requirements of Rule 14e-1 under the Exchange Act, and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Repurchase Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Repurchase Event provisions of the Notes, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Repurchase Event provisions of the Notes by virtue of such conflict.

On the repurchase date following a Change of Control Repurchase Event, the Company will, to the extent lawful:

(1) accept for payment all Notes or portions of Notes properly tendered pursuant to its offer;

(2) deposit with the Trustee an amount equal to the aggregate purchase price in respect of all Notes or portions of Notes properly tendered; and

(3) deliver or cause to be delivered to the Trustee the Notes properly accepted, together with an officers’ certificate stating the aggregate principal amount of Notes being purchased by the Company.

The Trustee will promptly mail to each holder of Notes properly tendered the purchase price for the Notes, and the Trustee will promptly cause to be transferred by book-entry to each holder a new Note equal in principal amount to any unpurchased portion of any Notes surrendered; provided that each new Note will be in a principal amount of a minimum denomination of $2,000 and an integral multiple of $1,000.

The Company will not be required to make an offer to repurchase the Notes upon a Change of Control Repurchase Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Notes properly tendered and not withdrawn under its offer.

For purposes of the foregoing discussion of a repurchase at the option of holders, the following definitions are applicable:

“Below Investment Grade Ratings Event” means that on any day within the 60-day period (which period shall be extended so long as the rating of the Notes is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) after the earlier of (1) the occurrence of a Change of Control; or (2) public notice of the occurrence of a Change of Control or the intention by the Company to effect a Change of Control, the Notes are rated below Investment Grade by each of the Rating Agencies. Notwithstanding the foregoing, a Below Investment Grade Ratings Event otherwise arising by virtue of a particular reduction in rating shall not be deemed to have occurred in respect of a particular Change of Control (and thus shall not be deemed a Below Investment Grade Ratings Event for purposes of the definition of Change of Control Repurchase Event hereunder) if the Rating Agencies making the reduction in rating to which this definition would otherwise apply do not announce or publicly confirm or inform the Trustee in writing that the reduction was the result, in whole or in part, of any event or circumstance comprised of or arising as a result of, or in respect of, the applicable Change of Control (whether or not the applicable Change of Control shall have occurred at the time of the ratings event).

“Change of Control” means the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is that any “person” or “group” (as those terms are used in Section 13(d)(3) of the Exchange Act), other than the Company, its subsidiaries, or its or such subsidiaries’ employee benefit plans, becomes the beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the combined voting power of the Company’s Voting Stock or other Voting Stock into which the Company’s Voting Stock is reclassified, consolidated, exchanged or changed measured by voting power rather than number of shares.

“Change of Control Repurchase Event” means the occurrence of both a Change of Control and a Below Investment Grade Ratings Event.

“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating category of Moody’s); a rating of BBB- or better by S&P (or its equivalent under any successor rating category of S&P); and the equivalent investment grade credit rating from any additional Rating Agency or Rating Agencies selected by the Company.

“Moody’s” means Moody’s Investors Service, Inc.

“Rating Agency” means (1) each of Moody’s and S&P; and (2) if either of Moody’s or S&P ceases to rate the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Company’s control, a “nationally recognized statistical rating organization” within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act, selected by the Company (as certified by a resolution of the Company’s board of directors) as a replacement agency for Moody’s or S&P, or both of them, as the case may be.

“S&P” means Standard & Poor’s Ratings Services, a division of McGraw-Hill, Inc.

“Voting Stock” of any specified “person” (as that term is used in Section 13(d)(3) of the Exchange Act) as of any date means the capital stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

Sinking Fund Provisions:

No sinking fund provisions

Defeasance Provisions:

Legal defeasance and covenant defeasance permitted upon compliance with conditions set forth in the Indenture

Time of Sale:

2:36 P.M., Eastern Standard Time, on March 11, 2008

Time of Delivery:

9:00 A.M., Eastern Standard Time, on March 14, 2008

Closing Location:

Sullivan & Cromwell LLP, 125 Broad Street, New York, New York, 10004

Names and Addresses of Representatives:

Designated Representatives:

Banc of America Securities LLC

Barclays Capital Inc.

Wachovia Capital Markets, LLC

Address for Notices, etc.:

c/o Banc of America Securities LLC

40 West 57th Street

NY1-040-27-03

New York, NY 10019

Attn: High Grade Transaction Management / Legal

c/o Barclays Capital Inc.

200 Park Avenue

New York, NY 10166

c/o Wachovia Capital Markets, LLC

301 S. College Street

Charlotte, NC 28202

Schedule III

Materials in Addition to the Pricing Prospectus comprising the Disclosure Package:

Term Sheet, dated March 11, 2008

Other Free Writing Prospectuses:

None

Documents Incorporated by Reference:

None

Schedule III-1

Schedule IV

Term Sheet

Filed Pursuant to Rule 433

Registration No. 333-130214

March 11, 2008

Burlington Northern Santa Fe Corporation

5.75% Notes due March 15, 2018

Schedule IV-1

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling toll-free to Banc of America Securities LLC at 1-800-294-1322, Barclays Capital Inc. at 1-888-227-2275, Ext. 2663, and Wachovia Capital Markets, LLC at 1-800-326-5897.

Schedule IV-2

Burlington Northern Santa Fe Corporation

Underwriting Agreement

Standard Provisions

(Debt Securities)

From time to time Burlington Northern Santa Fe Corporation, a Delaware corporation (the “Company”), may enter into one or more underwriting agreements that provide for the sale of debt securities (the “Securities”) to the several underwriters named therein. The standard provisions set forth herein may be incorporated by reference in any such underwriting agreement (an “Underwriting Agreement”). The Underwriting Agreement, including the provisions incorporated therein by reference, is herein referred to as “this Agreement.” Terms defined in the Underwriting Agreement are used herein as therein defined.

The terms and rights of any particular issuance of Securities shall be as specified in this Agreement and in or pursuant to the indenture (the “Indenture”) identified in this Agreement.

1. Particular sales of Securities may be made from time to time to the Underwriters of such Securities, for whom the firms as representatives of the Underwriters of such Securities in the Underwriting Agreement relating thereto will act as representatives (the “Representatives”). The term “Representatives” also refers to a single firm acting as sole representative of the Underwriters and to Underwriters who act without any firm being designated as their representative. The obligations of the Underwriters under this Agreement shall be several and not joint.

2. The Company represents and warrants to, and agrees with, each of the Underwriters that:

(a) An “automatic shelf registration statement” as defined under Rule 405 under the Securities Act of 1933, as amended (the “Securities Act”), on Form S-3 (File No. 333-130214) in respect of the Securities has been filed with the Securities and Exchange Commission (the “Commission”) not earlier than three years prior to the date hereof; such registration statement, and any post-effective amendment thereto, became effective on filing; and no stop order suspending the effectiveness of such registration statement or any part thereof has been issued and no proceeding for that purpose has been initiated or threatened by the Commission, and no notice of objection of the Commission to the use of such registration statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Securities Act has been received by the Company (the base prospectus filed as part of such registration statement, in the form in which it has most recently been filed with the Commission on or prior to the date of this Agreement, is hereinafter called the “Basic Prospectus”; any preliminary prospectus, including any preliminary prospectus supplement, relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Securities Act is hereinafter called a “Preliminary Prospectus”; the various parts of such registration statement, including all exhibits thereto but excluding Form T-1 and including any prospectus supplement relating to the Securities that is filed with the Commission and deemed by virtue of Rule 430B to be part of such registration statement, each as amended at the time such part of the registration statement became effective, are hereinafter

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collectively called the “Registration Statement”; the Basic Prospectus, as amended and supplemented immediately prior to the Time of Sale (as defined in Section 2(c) hereof), is hereinafter called the “Pricing Prospectus”; the form of the final prospectus relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Securities Act in accordance with Section 5(a) hereof is hereinafter called the “Prospectus”; any reference herein to the Basic Prospectus, the Pricing Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein pursuant to Item 12 of Form S-3 under the Securities Act, as of the date of such prospectus; any reference to any amendment or supplement to the Basic Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include any post-effective amendment to the Registration Statement, any prospectus supplement relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Securities Act and any documents filed under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and incorporated therein, in each case after the date of the Basic Prospectus, such Preliminary Prospectus, or the Prospectus, as the case may be; any reference to any amendment to the Registration Statement shall be deemed to refer to and include any annual report of the Company filed pursuant to Section 13(a) or 15(d) of the Exchange Act after the effective date of the Registration Statement that is incorporated by reference in the Registration Statement; and any “issuer free writing prospectus” as defined in Rule 433 under the Securities Act relating to the Securities and identified as such on Schedule III to the Underwriting Agreement is hereinafter called an “Issuer Free Writing Prospectus”);

(b) The Company was a “well-known seasoned issuer” as defined in Rule 405 under the Securities Act (A) at the time of filing the Registration Statement, (B) at the time of the most recent amendment thereto for the purpose of complying with Section 10(a)(3) of the Securities Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the Exchange Act or form of prospectus filed pursuant to the Securities Act), and (C) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) under the Securities Act) made any offer relating to the Securities in reliance on the exemption of Rule 163 under the Securities Act; and the Company was not an “ineligible issuer” as defined in Rule 405 under the Securities Act at the earliest time after the filing of the Registration Statement that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) under the Securities Act) of the Securities;

(c) For the purposes of this Agreement, the “Time of Sale” will be the date and time of day specified in Schedule II to the Underwriting Agreement; the Pricing Prospectus as supplemented by those Issuer Free Writing Prospectuses and other documents so specified in Schedule III to the Underwriting Agreement and by the final term sheet in the form attached to the Underwriting Agreement as Schedule IV, prepared and filed pursuant to Section 5(a) hereof, taken together (collectively, the “Disclosure Package”) as of the Time of Sale, did not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided , however , that this representation and warranty shall not apply to statements or omissions made in the Disclosure Package in reliance upon and in conformity with information furnished in writing to the Company by an Underwriter through the Representatives

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expressly for use therein; and each Issuer Free Writing Prospectus does not conflict with the information contained in the Registration Statement, the Pricing Prospectus or the Prospectus;

(d) The documents incorporated by reference in the Pricing Prospectus and the Prospectus, when they became effective or were filed with the Commission, as the case may be, conformed in all material respects to the requirements of the Securities Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder, and none of such documents contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading; and any further documents so filed and incorporated by reference in the Prospectus or any further amendment or supplement thereto, when such documents become effective or are filed with the Commission, as the case may be, will conform in all material respects to the requirements of the Securities Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, and no such documents were filed with the Commission since the Commission’s close of business on the business day immediately prior to the date of this Agreement and prior to the execution of this Agreement, except as set forth on Schedule III to the Underwriting Agreement and except for such other documents as were delivered to you prior to the Time of Sale;

(e) The Prospectus and any amendment or supplement thereto, as of the date thereof, do not and will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided , however , that this representation and warranty shall not apply to statements or omissions made in the Prospectus or any amendment or supplement thereto in reliance upon and in conformity with information furnished in writing to the Company by an Underwriter through the Representatives expressly for use therein;

(f) No order preventing or suspending the use of the Registration Statement has been issued by the Commission;

(g) The Registration Statement conforms, and the Prospectus and any further amendments or supplements to the Registration Statement will conform, in all material respects to the requirements of the Securities Act and the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”), and the rules and regulations of the Commission thereunder and do not and will not, as of the applicable effective date as to each part of the Registration Statement and as of the applicable filing date as to the Prospectus and any amendment or supplement thereto, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided , however , that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by an Underwriter of Securities through the Representatives expressly for use therein;

(h) Since the respective dates as of which information is given in the Pricing Prospectus, there has not been any change in the capital stock (other than increases in the stock

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of the Company as the result of the issuance of shares pursuant to any of the Company’s stock option plans) or any material change in long-term debt of the Company and its subsidiaries or any material adverse change, or any development that the Company has a reasonable cause to believe involves a prospective material adverse change, in the business, financial position, shareholders’ equity or results of operations of the Company and its subsidiaries taken as a whole, otherwise than as set forth or contemplated in the Pricing Prospectus;

(i) The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware, with power and authority (corporate and other) to own its properties and conduct its business as described in the Pricing Prospectus, and has been duly qualified as a foreign corporation for the transaction of business and is in good standing in each jurisdiction in which the conduct of its business or the ownership or leasing of its property requires such qualification, except where failure to qualify would not in the aggregate have a material adverse effect upon the Company and its subsidiaries taken as a whole; and BNSF Railway Company (hereinafter referred to as the “Significant Subsidiary”) has been duly incorporated and is validly existing as a corporation in good standing under the laws of its jurisdiction of incorporation;

(j) The Company has an authorized capitalization as set forth in the Pricing Prospectus, and all of the issued shares of capital stock of the Company have been duly and validly authorized and issued, are fully paid and non-assessable; and all of the issued shares of capital stock of the Significant Subsidiary have been duly and validly authorized and issued, are fully paid and non-assessable and except as set forth in the Pricing Prospectus are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims;

(k) The Securities have been duly authorized and, when the Securities are issued and delivered pursuant to this Agreement, will have been duly executed, authenticated, issued and delivered and will constitute valid and legally binding obligations of the Company entitled to the benefits provided by the Indenture, which will be substantially in the form filed as an exhibit to the Registration Statement; assuming the due authorization and execution by the Trustee, the Indenture has been duly authorized and duly qualified under the Trust Indenture Act and, at the Time of Delivery for such Securities (as defined in Section 4 hereof), the Indenture will constitute a valid and legally binding instrument, enforceable in accordance with its terms, subject, as to enforcement, to bankruptcy, insolvency, reorganization and other laws of general applicability relating to or affecting creditors’ rights and to general equity principles; and the Indenture conforms, and the Securities will conform, to the descriptions thereof contained in the Pricing Prospectus and the Prospectus;

(l) The issue and sale of the Securities and the compliance by the Company with all of the provisions of the Securities, the execution and delivery of the Indenture and this Agreement and the consummation of the transactions herein and therein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject except for such conflicts, breaches, violations or defaults that will not individually or in the aggregate have a material adverse effect on the business, financial

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position, shareholders’ equity or results of operations of the Company and its subsidiaries taken as a whole, nor will such action result in any violation of the provisions of the Amended and Restated Certificate of Incorporation or By-laws of the Company or any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties except for such violations (other than with respect to the Company’s Amended and Restated Certificate of Incorporation or By-laws) that will not individually or in the aggregate have a material adverse effect on the business, financial position, shareholders’ equity or results of operations of the Company and its subsidiaries taken as a whole; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issue and sale of the Securities or the consummation by the Company of the transactions contemplated by this Agreement or the Indenture, except such as have been, or will have been prior to the Time of Sale, obtained under the Securities Act and the Trust Indenture Act and such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Underwriters;

(m) Other than as set forth in the Pricing Prospectus, there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which, in either case, the Company has reasonable cause to believe will individually or in the aggregate have a material adverse effect on the financial position, shareholders’ equity or results of operations of the Company and its subsidiaries taken as a whole; and, to the best of the Company’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others;

(n) PricewaterhouseCoopers LLP, who has certified certain financial statements of the Company and its subsidiaries, and has attested to the Company’s internal control over financial reporting and management’s assessment thereof, is an independent registered public accounting firm as required by the Securities Act and the rules and regulations of the Commission thereunder;

(o) The Company maintains a system of internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that complies with the requirements of the Exchange Act and has been designed by the Company’s principal executive officer and principal financial officer, or persons under their supervision, to provide reasonable assurance 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 is effective and the Company is not aware of any material weaknesses in its internal control over financial reporting;

(p) The Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act) that comply with the requirements of the Exchange Act; such disclosure controls and procedures have been designed to ensure that material information relating to the Company and its subsidiaries is made known to the Company’s principal executive officer and principal financial officer by others within those entities; and such disclosure controls and procedures are effective; and

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(q) The Company is not, and after giving effect to the offering and sale of the Securities and the application of the proceeds thereof, will not be an “investment company”, or an entity “controlled” by an investment company as such terms are defined in the Investment Company Act of 1940, as amended (the “Investment Company Act”).

3. Upon the execution of this Agreement and authorization by the Representatives of the release of the Securities, the several Underwriters propose to offer the Securities for sale upon the terms and conditions set forth in the Prospectus.

4. Securities to be purchased by each Underwriter pursuant to this Agreement will be represented by one or more definitive global Securities in book-entry form which will be deposited by or on behalf of the Company with the Depository Trust Company (“DTC”) or its designated custodian. The Company will deliver the Securities to the Representatives for the account of such Underwriter, against payment by such Underwriter or on its behalf of the purchase price therefor by wire transfer of such funds as may be specified in Schedule II to the Underwriting Agreement, all at the place and time and date specified in this Agreement or at such other place and time and date as the Representatives and the Company may agree upon in writing, such time and date being herein called the “Time of Delivery”.

5. The Company agrees with each of the Underwriters:

(a) To prepare the Prospectus in a form approved by the Representatives, which approval shall not be unreasonably withheld or delayed, and to file such Prospectus pursuant to Rule 424(b) under the Securities Act not later than the Commission’s close of business on the second business day following the execution and delivery of this Agreement or, if applicable, such earlier time as may be required by Rule 424(b); to make no further amendment or any supplement to the Registration Statement or Prospectus after the date of this Agreement and prior to the Time of Delivery without giving you advance notice thereof and an opportunity to comment thereon; to advise the Representatives promptly of any such amendment or supplement after such Time of Delivery and furnish the Representat