UNDERWRITING AGREEMENT

Exhibit 1.1

$250,000,000

CONSUMERS ENERGY COMPANY

5.65% First Mortgage Bonds due 2018

Underwriting Agreement

March 10, 2008

To the Representatives named in Schedule I hereto

of the Underwriters named in Schedule II hereto

Ladies and Gentlemen:

     Consumers Energy Company, a Michigan corporation (the “ Company ”), proposes to issue and sell to the several Underwriters (as defined in Section 12 hereof) an aggregate of $250,000,000 in principal amount of its 5.65% First Mortgage Bonds due 2018 (the “ Securities ”), subject to the terms and conditions set forth herein. The Underwriters have designated the Representatives (as defined in Section 12 hereof) to execute this Agreement on their behalf and to act for them in the manner provided in this Agreement. The Securities are to be issued pursuant to the provisions of the Indenture dated as of September 1, 1945 between the Company and The Bank of New York (ultimate successor to City Bank Farmers Trust Company), as trustee (the “ Trustee ”), as supplemented and amended by various supplemental indentures and as to be supplemented by the 108th Supplemental Indenture, to be dated as of March 14, 2008, establishing the terms of the Securities (the “ Supplemental Indenture ”) (as so supplemented, the “ Indenture ”). Capitalized terms used but not defined herein shall have the meanings given to such terms in the Indenture. This Agreement, the Indenture and the Securities are hereinafter sometimes referred to collectively as the “ Operative Documents ”.

     The Company has prepared and filed with the Securities and Exchange Commission (the “ Commission ”), in accordance with the provisions of the Securities Act of 1933, as amended (the “ Act ”), a registration statement on Form S-3 (Registration No. 333-120611), including a prospectus relating to the Securities, and such registration statement has become effective under the Act. The registration statement, at the time it became effective or, if any post-effective amendment thereto has been filed with the Commission, at the time the most recent post-effective amendment thereto became effective, and as it may have been thereafter amended to the date of this Agreement (including the documents then incorporated by reference therein), is herein referred to as the “ Registration Statement ”. The Registration Statement at the time it originally became effective is referred to hereinafter as the “ Original Registration Statement ”. If the Company has filed, or will file, an abbreviated registration statement to register additional Securities pursuant to Rule 462(b) under the Act (the “ Rule 462(b) Registration Statement ”), then any reference herein to the term “ Registration Statement ” shall be deemed to include such Rule 462(b) Registration Statement. The prospectus forming a part of the Registration Statement at the time the Registration Statement became effective (including the documents then incorporated by reference therein) is herein referred to as the “ Basic Prospectus ”; provided , that,

in the event that the Basic Prospectus shall have been amended or revised prior to the execution of this Agreement, or if the Company shall have supplemented the Basic Prospectus by filing any documents pursuant to Section 13, 14 or 15 of the Securities Exchange Act of 1934, as amended (the “ Exchange Act ”), after the time the Registration Statement became effective and prior to the execution of this Agreement, which documents are deemed to be incorporated in the Basic Prospectus, the term “ Basic Prospectus ” shall also mean such prospectus as so amended, revised or supplemented. The Basic Prospectus, as amended and supplemented immediately prior to 12:54 p.m. (New York City time) on the date hereof or such other time as agreed by the Company and the Representatives (the “ Time of Sale ”), is hereinafter referred to, together with any issuer free writing prospectus (as defined in Rule 433 under the Act) relating to the Securities (each, an “ Issuer Free Writing Prospectus ”) and other documents listed in Schedule III hereto, as the “ Time of Sale Prospectus ”. The Basic Prospectus, as amended and supplemented immediately prior to the Time of Sale, is hereinafter referred to as the “ Preliminary Prospectus ”. The Basic Prospectus, as it shall be revised or supplemented to reflect the final terms of the offering and sale of the Securities by a prospectus supplement relating to the Securities, and in the form to be filed with the Commission pursuant to Rule 424 under the Act, is hereinafter referred to as the “ Prospectus ”. Any reference herein to the terms “amend”, “amendment” or “supplement” with respect to the Registration Statement, the Preliminary Prospectus, the Time of Sale Prospectus or the Prospectus shall be deemed to include amendments or supplements to the Registration Statement, the Preliminary Prospectus, the Time of Sale Prospectus or the Prospectus, as the case may be, including any post-effective amendment to the Registration Statement and any prospectus supplement forming a part of the Prospectus relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act, and documents incorporated by reference therein or deemed to be a part of and included therein, after the date of this Agreement and prior to the termination of the offering of the Securities by the Underwriters.

          1. Purchase and Sale . Upon the basis of the representations, warranties and covenants and subject to the terms and conditions herein set forth, the Company agrees to issue and sell to the respective Underwriters, severally and not jointly, and the respective Underwriters, severally and not jointly, agree to purchase from the Company, at the purchase price specified in Schedule II hereto (the “ Purchase Price ”), the respective principal amounts of Securities set opposite their names in Schedule II hereto. The Underwriters will offer the Securities to purchasers initially at a price equal to 99.617% of the principal amount thereof. Such price may be changed at any time without notice.

          2. Payment and Delivery . The Company shall deliver, or cause to be delivered, to the Representatives for the accounts of the several Underwriters, through the facilities of The Depository Trust Company (“ DTC ”), certificates for the Securities at the Time of Purchase (as defined below), against the irrevocable release of a wire transfer of immediately available funds to the order of the Company for the amount of the Purchase Price therefor plus accrued interest, if any, to the Time of Purchase, with any transfer taxes payable in connection with such delivery of Securities duly paid by the Company. The certificates for the Securities shall be definitive global certificates in book-entry form for clearance through DTC. Delivery of such certificates shall be made at the offices of Pillsbury Winthrop Shaw Pittman LLP (“ PWSP ”), 1540 Broadway, New York, New York 10036-4039 (or such other place or places of delivery as shall be agreed upon by the Company and the Representatives) at 10:00 a.m., New York City time, on March 14, 2008 (or such other time and date as the Company and the

Representatives shall agree), unless postponed in accordance with the provisions of Section 8 hereof. The day and time at which payment and delivery for the Securities are to be made is herein called the “ Time of Purchase ”.

          3. Conditions of Underwriters’ Obligations . The several obligations of the Underwriters hereunder are subject to the accuracy of the representations and warranties and other statements of the Company made herein at the Time of Sale and at and as of the Time of Purchase on the part of the Company, to the performance by the Company of all of its obligations hereunder theretofore to be performed and to the following other conditions.

          (a) That all legal proceedings to be taken in connection with the issue and sale of the Securities shall be reasonably satisfactory in form and substance to PWSP, counsel to the Underwriters.

          (b) That, at the Time of Purchase, the Underwriters shall be furnished with the following opinions and letter, as the case may be, dated the day of the Time of Purchase:

               (i) opinion of Shelley J. Ruckman, Esq., Assistant General Counsel of the Company, substantially to the effect set forth in Exhibit A attached hereto;

               (ii) letter of Sidley Austin LLP, special counsel to the Company, substantially to the effect set forth in Exhibit B attached hereto; and

               (iii) opinion of PWSP, counsel to the Underwriters, as to such matters relating to the Securities and the transactions contemplated hereby as the Underwriters may reasonably request.

          (c) (i) That, on the date hereof, the Representatives shall have received a letter from Ernst & Young LLP in form and substance satisfactory to the Underwriters, dated such date, (A) confirming that they are an independent registered public accounting firm with respect to the Company within the meaning of the Act, the applicable published rules and regulations of the Commission thereunder and the applicable published rules and regulations of the Public Company Accounting Oversight Board (“ PCAOB ”), (B) stating that in their opinion the financial statements examined by them and incorporated by reference in the Preliminary Prospectus and the Prospectus complied as to form in all material respects with the applicable accounting requirements of the Commission, including the applicable published rules and regulations of the Commission, and (C) covering, as of a date not more than five days prior to the date of each such letter, such other matters as the Underwriters reasonably request.

                    (ii) That, on the date hereof and on the date of the Time of Purchase, the Representatives shall have received a letter from PricewaterhouseCoopers LLP in form and substance satisfactory to the Underwriters, dated such date, (A) confirming that they are an independent registered public accounting firm with respect to the Company within the meaning of the Act, the applicable published rules and regulations of the Commission thereunder and the applicable published rules and regulations of the PCAOB, (B) stating that in their opinion the financial statements examined by them and incorporated by reference in the Preliminary Prospectus and the Prospectus complied as to form in all material respects with the

applicable accounting requirements of the Commission, including the applicable published rules and regulations of the Commission, and (C) covering, as of a date not more than five days prior to the date of each such letter, such other matters as the Underwriters reasonably request.

          (d) That, subsequent to the Time of Sale or, if earlier, the dates as of which information is given in the Time of Sale Prospectus (exclusive of any amendment or supplement thereto), there shall not have been (i) any change or decrease specified in the letter or letters referred to in Section 3(c) hereof or (ii) any change, or any development involving a prospective change, in or affecting the condition (financial or otherwise), prospects, earnings, business or properties of the Company and its subsidiaries taken as a whole, except as referred to in or contemplated in the Time of Sale Prospectus (exclusive of any such amendment or supplement thereto), the effect of which, in any case referred to in clause (i) or (ii) above, is, in the judgment of the Representatives, so material and adverse as to make it impractical or inadvisable to proceed with the offering or delivery of the Securities as contemplated in the Time of Sale Prospectus (exclusive of any such amendment or supplement thereto).

          (e) That no stop order suspending the effectiveness of the Registration Statement or any part thereof shall have been issued and no proceeding for that purpose shall have been initiated or threatened by the Commission.

          (f) That, at the Time of Purchase, the Company shall have delivered to the Representatives a certificate of an executive officer of the Company to the effect that, to the best of his or her knowledge, information and belief, (i) there shall have been no material adverse change in the condition (financial or otherwise), prospects, earnings, business or properties of the Company from that set forth in the Time of Sale Prospectus (other than changes referred to in or contemplated by the Time of Sale Prospectus) and (ii) the representations and warranties of the Company in this Agreement are true and correct on and as of the Time of Purchase with the same effect as if made at the Time of Purchase, and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied hereunder at or prior to the Time of Purchase.

          (g) That the Company shall have furnished the Representatives signed counterparts of the Supplemental Indenture.

          (h) That the Company shall have performed such of its obligations under this Agreement as are to be performed at or before the Time of Purchase by the terms hereof.

          (i) That the Company shall have complied with the provisions of Section 4(e) hereof with respect to the furnishing of the Time of Sale Prospectus and the Prospectus.

          (j) That, at the Time of Purchase, the Securities shall be rated at least BBB by Standard & Poor’s Ratings Group, a division of The McGraw-Hill Companies, Inc. (“ S&P ”), Baa1 by Moody’s Investors Service, Inc. (“ Moody’s ”) and BBB+ by Fitch, Inc. (“ Fitch ”), and the Company shall have delivered to the Representatives a letter, dated on or prior to the Time of Purchase, from each such rating agency, or other evidence reasonably satisfactory to the Representatives, confirming that the Securities have been assigned such ratings; and between the date hereof and the Time of Purchase, there has been no downgrading or withdrawal of any

investment ratings of the Securities or other securities of the Company by any nationally recognized statistical rating agency (as such term is defined for purposes of Rule 436(g)(2) under the Act), and no such rating agency shall have publicly announced that it has under surveillance or review, with possible negative implications, any such rating.

          (k) That any filing of the Preliminary Prospectus and the Prospectus and any supplements thereto required pursuant to Rule 424 under the Act shall have been made in compliance with and in the time periods provided by Rule 424 under the Act and that the Final Term Sheet (as defined in Section 4(v) hereof) and any other material required to be filed by the Company pursuant to Rule 433(d) under the Act shall have been filed with the Commission within the applicable time period prescribed for such filing by Rule 164 and Rule 433 under the Act.

          (l) That, at the Time of Purchase, the Securities shall be eligible for clearance and settlement through DTC.

          (m) That any additional documents or agreements reasonably requested by the Underwriters or their counsel to permit the Underwriters to perform their obligations or permit their counsel to deliver opinions hereunder shall have been provided to them.

          4. Certain Covenants of the Company . In further consideration of the agreements of the Underwriters herein contained, the Company covenants as follows.

          (a) To promptly transmit copies of the Preliminary Prospectus and the Prospectus, and any amendments or supplements thereto, to the Commission for filing pursuant to Rule 424 under the Act.

          (b) During the period when a prospectus relating to any of the Securities (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required to be delivered under the Act by any Underwriter or any dealer, to file promptly all documents required to be filed with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act; to promptly file all material required to be filed by the Company with the Commission pursuant to Rule 433(d) under the Act; and to promptly notify the Underwriters of any written notice given to the Company by any of the rating organizations referred to in Section 3(j) hereof of any intended downgrade in or withdrawal of any rating of any securities of the Company or of any other intended change in any such rating that does not indicate the direction of the possible change of such rating.

          (c) To deliver to each of the Representatives a conformed copy of the Registration Statement and any amendments thereto (including all exhibits thereto) and full and complete sets of all comments, if any, of the Commission or its staff and all responses thereto with respect to the Registration Statement and any amendments thereto and to furnish to the Representatives, for each of the Underwriters, conformed copies of the Registration Statement and any amendments thereto without exhibits.

          (d) As soon as the Company is advised thereof, to advise the Representatives and confirm the advice in writing of: (i) the effectiveness of any amendment to the Registration Statement (and the Company agrees to use its best efforts to cause any post-effective

amendments to the Registration Statement to become effective as promptly as possible); (ii) any request made by the Commission for amendments to the Registration Statement, Time of Sale Prospectus or Prospectus or for additional information with respect thereto; (iii) the suspension of qualification or suspension of exemption from qualification of the Securities for offering or sale under blue sky or state securities laws or the initiation or threat or any proceedings for that purpose; and (iv) the entry of a stop order suspending the effectiveness of the Registration Statement or the initiation or threat of any proceedings for that purpose (and the Company agrees to use every reasonable effort to prevent the issuance of any such suspension or stop order and, if such a suspension or stop order should be entered, to use every reasonable effort to obtain the lifting or removal thereof at the earliest possible time).

          (e) To deliver to the Underwriters, without charge, as soon as practicable, and from time to time during such period of time after the date of the Preliminary Prospectus or the Prospectus, as the case may be, as they are required by law to deliver a prospectus (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act), as many copies of the Preliminary Prospectus, the Prospectus or any other Issuer Free Writing Prospectus, as the case may be (as supplemented or amended if the Company shall have made any supplements or amendments thereto), as the Representatives may reasonably request; and, in case any Underwriter is required to deliver a prospectus (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act) after the expiration of nine months after the date of the Preliminary Prospectus or the Prospectus, as the case may be, to furnish to the Representatives, upon request, at the expense of such Underwriter, a reasonable quantity of a supplemental prospectus or of supplements to the Preliminary Prospectus or the Prospectus, as the case may be, complying with Section 10(a)(3) of the Act.

          (f) For such period of time as the Underwriters are required by law or customary practice to deliver a prospectus in respect of the Securities (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act), if any event shall have occurred as a result of which it is necessary to amend or supplement the Time of Sale Prospectus or the Prospectus in order to make the statements therein, in the light of the circumstances when the Time of Sale Prospectus or the Prospectus (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act), as the case may be, is delivered to a purchaser, not misleading, or if it becomes necessary to amend or supplement the Registration Statement or amend the Time of Sale Prospectus or the Prospectus to comply with law, including in connection with the use or delivery of the Prospectus, to forthwith prepare and file with the Commission (subject to Section 4(m) hereof) an appropriate amendment or supplement to the Registration Statement, the Time of Sale Prospectus or the Prospectus, as the case may be, and deliver to the Underwriters, without charge, such number of copies thereof as may be reasonably requested, and use its best efforts to have any necessary amendment to the Registration Statement declared effective as soon as practicable to avoid any disruption in use of the Prospectus.

          (g) During the period when a prospectus relating to any of the Securities (or, in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required to be delivered under the Act by any Underwriter or any dealer, to comply, at the Company’s own expense, with all requirements imposed on the Company by the Act, as now and hereafter amended, and by the rules and regulations of the Commission thereunder, as from time to time in force, so far

as necessary to permit the continuance of sales of or dealing in the Securities during such period in accordance with the provisions hereof and as contemplated by the Time of Sale Prospectus.

          (h) If required by Rule 430B(h) under the Act, to prepare a form of prospectus in a form approved by the Representatives and to file such form of prospectus pursuant to Rule 424(b) under the Act not later than may be required by Rule 424(b) under the Act and to make no further amendment or supplement to such form of prospectus that shall be reasonably objected to by the Representatives promptly after reasonable notice thereof.

          (i) To make generally available to the Company’s security holders, as soon as practicable, an “earning statement” (which need not be audited by independent public accountants) covering a 12-month period commencing after the effective date of the Registration Statement and ending not later than 15 months thereafter, that shall comply in all material respects with and satisfy the provisions of Section 11(a) of the Act and Rule 158 under the Act.

          (j) To use its best efforts to qualify the Securities for offer and sale under the securities or blue sky laws of such jurisdictions as the Representatives may designate and to pay (or cause to be paid), or reimburse (or cause to be reimbursed) the Underwriters and their counsel for, reasonable filing fees and expenses in connection therewith (including the reasonable fees and disbursements of counsel to the Underwriters and filing fees and expenses paid and incurred prior to the date hereof); provided , however , that the Company shall not be required to qualify to do business as a foreign corporation or as a securities dealer, file a general consent to service of process, file annual reports or comply with any other requirements deemed by the Company to be unduly burdensome.

          (k) To pay all expenses, fees and taxes (other than transfer taxes on sales by the respective Underwriters) in connection with the issuance and delivery of the Securities, including, without limitation, (i) the fees and expenses of the Company’s counsel and independent accountants, (ii) the cost of preparing any certificates representing the Securities, (iii) the costs and charges of any transfer agent and any registrar, (iv) the cost of printing and delivery (electronic or otherwise) to the Underwriters of copies of any Permitted Free Writing Prospectus (as defined in Section 6(a) hereof), (v) all expenses incurred by the Company in connection with any “road show” presentation to potential investors and (vi) any costs and expenses associated with the reforming of any contracts for any sale of the Securities made by any Underwriter caused by a breach of the representations and warranties contained in the third or fourth sentence of Section 5(a) hereof, except that the Company shall be required to pay the fees and disbursements (other than fees and disbursements referred to in Section 4(j) hereof) of PWSP, counsel to the Underwriters, only in the events provided in Section 4(l) hereof, the Underwriters hereby agreeing to pay such fees and disbursements in any other event, and that, except as provided in Section 4(l) hereof, the Company shall not be responsible for any out-of-pocket expenses of the Underwriters in connection with their services hereunder.

          (l) If the Underwriters shall not take up and pay for the Securities (i) due to the failure of the Company to comply with any of the conditions specified in Section 3 hereof, to pay the reasonable fees and disbursements of PWSP, counsel to the Underwriters, and to reimburse the Underwriters for their other reasonable out-of-pocket expenses, not to exceed a

total of $10,000, incurred in connection with the financing contemplated by this Agreement, or (ii) due to termination in accordance with the provisions of Section 9 hereof prior to the Time of Purchase, to pay the reasonable fees and disbursements of PWSP, counsel to the Underwriters.

          (m) Prior to the termination of the offering of the Securities, to not amend or supplement the Registration Statement, Time of Sale Prospectus or Prospectus (including the Basic Prospectus) unless the Company has furnished the Representatives and counsel to the Underwriters with a copy for their review and comment a reasonable time prior to filing and has reasonably considered any comments of the Representatives, and not to make any such amendment or supplement to which such counsel shall reasonably object on legal grounds in writing after consultation with the Representatives.

          (n) To furnish the Representatives with copies of all documents required to be filed with the Commission pursuant to Section 13, 14 or 15(d) of the Exchange Act subsequent to the time the Registration Statement becomes effective and prior to the termination of the offering of the Securities.

          (o) So long as may be required by law for distribution of the Securities by the Underwriters or by any dealers that participate in the distribution thereof, to comply with all requirements under the Exchange Act relating to the timely filing with the Commission of its reports pursuant to Section 13 or 15(d) of the Exchange Act and of its proxy statements pursuant to Section 14 of the Exchange Act.

          (p) Without the prior written consent of the Representatives, not to offer, sell, contract to sell or otherwise issue debt securities substantially similar to the Securities for a period from the date hereof until the Time of Purchase.

          (q) To not take, directly or indirectly, any action designed to, or that has constituted or that might reasonably be expected to, cause or result, under the Exchange Act or otherwise, in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

          (r) To cause the proceeds of the issuance and sale of the Securities to be applied for the purposes described in the Time of Sale Prospectus and the Prospectus.

          (s) To obtain the approval of DTC for “book-entry” transfer of the Securities, and to comply in all material respects with all of its agreements set forth in the representation letter or letters of the Company to DTC relating to the approval of the Securities by DTC for “book-entry” transfer.

          (t) To not voluntarily claim, and actively resist any attempts to claim, the benefit of any usury laws against the holders of any Securities.

          (u) To take all reasonable action necessary to enable S&P, Moody’s and Fitch to provide their respective credit ratings of the Securities.

          (v) That any Underwriter may distribute to investors a free writing prospectus (as defined in Rule 405 under the Act) that contains the final terms of the Securities in the form set forth in Annex A to Schedule III hereto (the “ Final Term Sheet ”), and to file such free writing prospectus in accordance with Rule 433(d) under the Act.

          (w) (1) Within 10 days after the Time of Purchase, to deliver the Supplemental Indenture in recordable form to the appropriate real estate recording office in all jurisdictions specified in the Supplemental Indenture for recording and deliver to the office of the Secretary of State of the State of Michigan a UCC-1 financing statement relating to the Supplemental Indenture for filing in such office and (2) within 25 days after the Time of Purchase, to deliver to counsel to the Underwriters a certificate signed by an officer of the Company certifying that the actions required by the foregoing clause (1) have been taken. The Company shall further provide counsel to the Underwriters, as soon as it is available, a copy of the related opinion of counsel contemplated by Section 7.11(i) of the Indenture. To the extent not covered in the opinion described in the previous sentence, the Company shall also provide counsel to the Underwriters, concurrently with the furnishing of such opinion, a list of the recording information for all such filings.

          5. Representations and Warranties of the Company . The Company represents and warrants to, and agrees with, each of the Underwriters as of the Time of Sale and the Time of Purchase as follows.

          (a) The Company meets the requirements for the use of Form S-3 under the Act; the Registration Statement has been declared effective by the Commission under the Act, meets the requirements set forth in paragraph (a)(1)(ix) or (a)(1)(x) of Rule 415 under the Act and complies in all other respects with Rule 415 under the Act; a true and correct copy of the Registration Statement as amended to the date hereof has been delivered to each of the Representatives and to the Representatives for each of the Underwriters (except that copies delivered for the Underwriters excluded exhibits to such Registration Statement); any filing of the Preliminary Prospectus pursuant to Rule 424 under the Act has been made, and any filing of the Prospectus and any supplements thereto required pursuant to Rule 424 under the Act will be made in the manner and within the time period required by Rule 424 under the Act; no stop order suspending the effectiveness of the Registration Statement or any part thereof has been issued under the Act and no proceedings for such purposes have been instituted or, to the knowledge of the Company, threatened or are pending before the Commission, and any request on the part of the Commission for additional information has been complied with by the Company; and no order preventing or suspending the use of any Issuer Free Writing Prospectus has been issued by the Commission. (1) At the respective times that the Registration Statement and each amendment thereto became effective and at 12:54 p.m., New York City time, on March 14, 2008 (which the Representatives have informed the Company is a time that is the earlier of (x) the date on which the Prospectus was first used and (y) the date and time of the first contract of sale of the Securities) (the “ Applicable Effective Time ”), the Registration Statement and the Basic Prospectus complied, (2) at the Time of Sale the Time of Sale Prospectus complied, and (3) on its issue date the Prospectus will comply, in each case in all material respects with the applicable provisions of the Act and the related rules and regulations of the Commission. (A) At the respective times that the Registration Statement and each amendment thereto became effective and at the Applicable Effective Time, the Registration

Statement did not contain any 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, (B) the Basic Prospectus, as of its issue date, did not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, (C) the Time of Sale Prospectus, as of the Time of Sale, does not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, and (D) the Prospectus, on its issue date and, as amended or supplemented, if applicable, as of the Time of Purchase, will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, except in each case that the Company makes no representation or warranty to any Underwriter with respect to any statements or omissions made therein in reliance upon and in conformity with information furnished in writing to the Company through the Representatives on behalf of any Underwriter expressly for use therein (as set forth in Section 7(b) hereof). Each document listed in Schedule III hereto, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Securities or until any earlier date that the Company notified or notifies the Representatives, did not, does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement, the Time of Sale Prospectus or the Prospectus.

          (b) The documents incorporated by reference in the Registration Statement, the Basic Prospectus, the Time of Sale Prospectus and the Prospectus, when they were filed with the Commission (or, if an amendment with respect to any such document was filed, when such amendment was filed with the Commission), conformed in all material respects to the requirements of the Exchange Act and the rules and regulations of the Commission promulgated thereunder, and any further documents so filed and incorporated by reference will, when they are filed with the Commission, conform in all material respects to the requirements of the Exchange Act and the rules and regulations of the Commission promulgated thereunder; none of such documents, when it was filed (or, if an amendment with respect to any such document was filed, when such amendment was filed), 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, in the light of the circumstances under which they were made, not misleading; and no such further document, when it is filed, will contain an untrue statement of a material fact or will omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they are made, not misleading. No such documents were filed with the Commission since the Commission’s close of business on the business day immediately prior to the date hereof other than as expressly set forth in the Prospectus. The Company has given the Representatives notice of any filings made within 48 hours prior to the Time of Sale pursuant to the Exchange Act and the rules and regulations of the Commission promulgated thereunder.

          (c) The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the State of Michigan and has all requisite authority to own or lease its properties and conduct its business as described in the Time of Sale Prospectus and the Prospectus and to consummate the transactions contemplated hereby, and is duly qualified to transact business and is in good standing in each jurisdiction in which the

conduct of its business as described in the Time of Sale Prospectus and the Prospectus or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a material adverse effect on the Company and its subsidiaries taken as a whole (a “ Material Adverse Effect ”).

          (d) Each significant subsidiary (as defined in Rule 405 under the Act, and hereinafter called a “ Significant Subsidiary ”) of the Company has been duly organized and is validly existing and in good standing under the laws of the jurisdiction of its organization, has all requisite authority to own or lease its properties and conduct its business as described in the Time of Sale Prospectus and the Prospectus and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business as described in the Time of Sale Prospectus and the Prospectus or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a Material Adverse Effect.

          (e) The Securities are in the form contemplated by the Indenture and have been duly authorized by the Company. At the Time of Purchase, the Securities will have been duly executed and delivered by the Company and, when authenticated by the Trustee in the manner provided for in the Indenture and delivered against payment therefor as provided in this Agreement, will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms, except to the extent that enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting creditors’ rights generally or by general principles of equity (regardless of whether enforcement is considered in a proceeding at law or in equity) and will be entitled to the security afforded by the Indenture equally and ratably with all securities outstanding thereunder. The Securities will conform in all material respects to the descriptions thereof in the Time of Sale Prospectus and the Prospectus and such descriptions conform in all material respects to the rights set forth in the instruments defining the same. The Company knows of no reason that any holder of the Securities would be subject to personal liability solely by reason of being such a holder; and the issuance of the Securities is not subject to any preemptive or other similar rights of any securityholder of the Company or any of its subsidiaries.

          (f) The Indenture has been duly authorized by the Company. At the Time of Purchase, the Indenture will have been duly executed and delivered by the Company and will constitute a valid and binding obligation of the Company, enforceable against the Company in accordance with its terms, except to the extent that enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting creditors’ rights generally or by general principles of equity (regardless of whether enforcement is considered in a proceeding at law or in equity); the Indenture conforms in all material respects to the descriptions thereof in the Time of Sale Prospectus and the Prospectus; and the Indenture conforms to the requirements of the Trust Indenture Act of 1939, as amended (the “ Trust Indenture Act ”).