Exhibit 3.1 CERTIFICATE OF INCORPORATION of UNUM CORPORATION as amended FIRST: The name of the Corporation is UNUM Corporation. SECOND: The address of the registered office of the Corporation in the state of Delaware is 1209 Orange Street, in the city of Wilmington, county of New Castle. The name of the Corporation's registered agent at that address is The Corporation Trust Center. THIRD: The purpose of the Corporation is to engage in any lawful act or activity for which a corporation may be organized under the General Corporation Law of Delaware as set forth in Title 8 of the Delaware Code (the "GCL"). FOURTH: A. The total number of shares of capital stock which the Corporation shall have authority to issue is 130,000,000 shares, consisting of 120,000,000 shares of Common Stock, par value $.10 per share (the "Common Stock") and 10,000,000 shares of Preferred Stock, par value $.10 per share (the "Preferred Stock"). B. Shares of Preferred Stock may be issued from time to time in one or more classes or series as may be determined from time to time by the Board of Directors of the Corporation (the "Board of Directors"), each such class or series to be distinctly designated. Except in respect of the particulars fixed by the Board of Directors for classes or series provided for by the Board of Directors as permitted hereby, all shares of Preferred Stock shall be of equal rank and shall be identical. All shares of any one series of Preferred Stock so designated by the Board of Directors shall be alike in every particular, except that shares of any one series issued at different times may differ as to the dates from which dividends thereon shall be cumulative. The voting rights, if any, of each such class or series and the preferences and relative, participating, optional and other special rights of each such class or series and the qualifications, limitations and restrictions thereof, if any, may differ from those of any and all other classes or series at any time outstanding; and the Board of Directors of the Corporation is hereby expressly granted authority to fix, by resolutions duly adopted prior to the issuance of any shares of a particular class or series of Preferred Stock so designated by the Board of Directors, the voting powers of stock of such class or series, if any, and the designations, preferences and relative, participating, optional and other special rights and the qualifications, limitations and restrictions of such class or series, including, but without limiting the generality of the foregoing, the following: (1) The distinctive designation of, and the number of shares of Preferred Stock which shall constitute, such class or series, and such number may be increased (except where otherwise provided by the Board of Directors) or decreased (but not below the number of shares thereof then outstanding) from time to time by like action of the Board of Directors; (2) The rate and time at which, and the terms and conditions upon which, dividends, if any, on Preferred Stock of such class or series shall be paid, the extent of the preference or relation, if any, of such dividends to the dividends payable on any other class or classes, or series of the same or other classes of stock and whether such dividends shall be cumulative or non-cumulative; -2- (3) The right, if any, of the holders of Preferred Stock of such class or series to convert the same into, or exchange the same for, shares of any other class or classes or of any series of the same or any other class or classes of stock and the terms and conditions of such conversion or exchange; (4) Whether or not Preferred Stock of such class or series shall be subject to redemption, and the redemption price or prices and the time or times at which, and the terms and conditions upon which, Preferred Stock of such class or series may be redeemed; (5) The rights, if any, of the holders of Preferred Stock of such class or series upon the voluntary or involuntary liquidation of the Corporation; (6) The terms of the sinking fund or redemption or purchase account, if any, to be provided for the Preferred Stock of such class or series; and (7) The voting powers, if any, of the holders of such class or series of Preferred Stock. C. Except as otherwise provided in this Certificate of Incorporation, the Board of Directors shall have authority to authorize the issuance, from time to time without any vote or other action by the stockholders, of any or all shares of stock of the Corporation of any class or series at any time authorized, and any securities convertible into or exchangeable for any such shares, and any options, rights or warrants to purchase or acquire any such shares, in each case to such persons and on such terms (including as a dividend or distribution on or with respect to, or in connection with a split or combination of, the outstanding shares of stock of the same or any other class) as the Board of Directors from time to time in its discretion lawfully may determine; provided, however, that the consideration for the issuance of shares of stock of the Corporation having par value (unless issued as such a dividend or distribution or in connection with such a split or combination) shall not be less than such par value. Shares so issued shall be fully paid stock, and the holders of such stock shall not be liable to any further call or assessments thereon. D. Except as provided in this Certificate of Incorporation, each holder of Common Stock shall be entitled to one vote for each share of Common Stock held by him. FIFTH: The name and mailing address of the Sole Incorporator is as follows: Name Mailing Address ---- --------------- Colin C. Hampton c/o UNUM Life Insurance Company 2211 Congress Street Portland, Maine 04122 SIXTH: The following provisions are inserted for the management of the business and the conduct of the affairs of the Corporation, and for further definition, limitation and regulation of the powers of the Corporation and of the Board of Directors and stockholders: (1) The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors. (2) The Board of Directors shall consist of not less than three nor more than fifteen directors. The exact number of directors shall be determined from time to time by resolution adopted by the affirmative vote of a majority of the Board of Directors. The Directors shall be divided into three classes, designated Class I, Class II and Class III. Each class shall consist, as nearly as may be possible, of one-third of the total number of Directors constituting the entire Board of Directors. -3- (3) Upon, or as soon as practicable following, the filing of this Certificate of Incorporation, Class I Directors shall be elected for a one-year term, Class II Directors for a two-year term and Class III Directors for a three-year term. At each succeeding annual meeting of stockholders, successors to the class of Directors whose term expires at that annual meeting shall be elected for a three-year term. If the number of Directors is changed in accordance with the terms of this Certificate of Incorporation, any increase or decrease shall be apportioned among the classes so as to maintain the number of Directors in each class as nearly equal as possible, and any additional Director of any class elected to fill a vacancy resulting from an increase in such class shall hold office for a term that shall coincide with the remaining term of that class, but in no case will a decrease in the number of Directors shorten the term of any incumbent Director. A Director shall hold office until the annual meeting for the year in which his term expires and until his successor shall be elected and shall qualify, subject, however, to the Director's prior death, resignation, disqualification or removal from office. The stockholders shall not have the right to remove any one or all of the Directors except for cause and by the affirmative vote of the holders of eighty percent (80%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock (as hereinafter defined) voting together as a single class. Any vacancy on the Board of Directors that results from a newly created Directorship may be filled by the affirmative vote of a majority of the Board of Directors then in office, and any other vacancy occurring on the Board of Directors may be filled by a majority of the Directors then in office, although less than a quorum, or by a sole remaining Director. Any Director elected to fill a vacancy not resulting from an increase in the number of Directors shall have the same remaining term as that of his predecessor. (4) Notwithstanding the foregoing, whenever the holders of any one or more classes or series of Preferred Stock issued by the Corporation shall have the right, voting separately by class or series, to elect Directors at an annual or special meeting of stockholders, the election, term of office, filling of vacancies and other features of such Directorships shall be governed by the terms of this Certificate of Incorporation applicable thereto (including the resolutions adopted by the Board of Directors pursuant to Section B of Article FOURTH), and such Directors so elected shall not be divided into classes pursuant to Paragraph (2) of this Article SIXTH unless expressly provided by such terms. Election of Directors need not be by written ballot unless the By-Laws so provide. (5) The Board of Directors may from time to time determine whether, to what extent, at what times and places and under what conditions and regulations the accounts, books and papers of the Corporation, or any of them, shall be open to the inspection of the stockholders, and no stockholder shall have any right to inspect any account, book or document of the Corporation, except as and to the extent expressly provided by law with reference to the right of stockholders to examine the original or duplicate stock ledger, or otherwise expressly provided by law, or except as expressly authorized by resolution of the Board of Directors. (6) In addition to the powers and authority hereinbefore or by statute expressly conferred upon them, the Directors are hereby empowered to exercise all such powers and do all such acts and things as may be exercised or done by the Corporation, subject, nevertheless, to the provisions of the statutes of Delaware, this Certificate of Incorporation, and any By-Laws adopted by the stockholders; provided, however, that no By-Laws hereafter adopted by the stockholders shall invalidate any prior act of the Directors which would have been valid if such By-Laws had not been adopted. (7) No action shall be taken by stockholders of the Corporation except at an annual or special meeting of stockholders of the Corporation and the right of stockholders to act by written consent in lieu of a meeting is specifically denied. -4- SEVENTH: A. The Board of Directors shall have concurrent power with the stockholders as set forth in this Certificate of Incorporation to make, alter, amend, change, add to or repeal the By-Laws of the Corporation. B. The Board of Directors may amend the By-Laws of the Corporation upon the affirmative vote of the number of directors which shall constitute, under the terms of the By-Laws, the action of the Board of Directors. Stockholders may not amend the By-Laws of the Corporation except upon the affirmative vote of at least eighty percent (80%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock voting together as a single class. EIGHTH: A. In addition to any affirmative vote required by law, this Certificate of Incorporation, the By-Laws of the Corporation or otherwise, except as otherwise expressly provided in Section B of this Article EIGHTH, the Corporation shall not engage, directly or indirectly, in any Business Combination (as hereinafter defined) with an Interested Stockholder (as hereinafter defined) without the affirmative vote of (i) not less than eighty percent (80%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock voting together as a single class, and (ii) not less than a majority of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock which are beneficially owned by persons other than such Interested Stockholder voting together as a single class. Such affirmative vote shall be required notwithstanding the fact that no vote may be required, or that a lesser percentage or separate class vote may be specified, by law or in any agreement with any national securities exchange or otherwise. B. The provisions of Section A of this Article EIGHTH shall not be applicable to any particular Business Combination, and such Business Combination shall require only such affirmative vote, if any, as is required by law, this Certificate of Incorporation, the By-Laws of the Corporation, or otherwise, if such Business Combination shall have been approved by a majority (whether such approval is made prior to or subsequent to the acquisition of beneficial ownership of Voting Stock that caused the Interested Stockholder to become an Interested Stockholder) of the Continuing Directors (as hereinafter defined). C. For the purposes of this Certificate of Incorporation: (1) The term "Business Combination" shall mean: (a) any merger or consolidation of this Corporation or any Subsidiary (as hereinafter defined) with (i) any Interested Stockholder or (ii) any other corporation (whether or not itself an Interested Stockholder) which is or after such merger or consolidation would be an Affiliate or Associate of an Interested Stockholder; or (b) any sale, lease, exchange, mortgage, pledge, transfer or other disposition (in one transaction or a series of transactions) between the Corporation or any Subsidiary and any Interested Stockholder or any Affiliate or Associate of any Interested Stockholder involving any assets or securities of the Corporation, any Subsidiary or any Interested Stockholder or any Affiliate or Associate of any Interested Stockholder the value of which would constitute, immediately prior to such transaction, a Substantial Part (as hereinafter defined) of the assets of the Corporation; or (c) the adoption of any plan or proposal for the liquidation or dissolution of, or similar transaction involving, the Corporation proposed by or on behalf of an Interested Stockholder or any Affiliate or Associate of any Interested Stockholder; or (d) any reclassification of securities (including any reverse stock split), or recapitalization of the Corporation, or any merger or consolidation of the Corporation with any of its Subsidiaries or any other transaction (whether or not with or otherwise involving an -5- Interested Stockholder) that has the effect, directly or indirectly, of increasing the proportionate share of any class or series of Capital Stock, or any securities convertible into Capital Stock or into equity securities of any Subsidiary, that is beneficially owned by any Interested Stockholder or any Affiliate or Associate of any Interested Stockholder; or (e) any agreement, contract or other arrangement providing for any one or more of the actions specified in the foregoing clauses (a) to (d). (2) The term "Capital Stock" shall mean all capital stock of the Corporation authorized to be issued from time to time under Article FOURTH of this Certificate of Incorporation, and the term "Voting Stock" shall mean all Capital Stock which by its terms may be voted on all matters submitted to stockholders of the Corporation generally. (3) The term "person" shall mean any individual, firm, corporation or other entity and shall include any group comprised of any person and any other person with whom such person or any Affiliate or Associate of such person has any agreement, arrangement or understanding, directly or indirectly, for the purpose of acquiring, holding, voting or disposing of Capital Stock. (4) The term "Interested Stockholder" shall mean any person (other than the Corporation or any Subsidiary and other than any profit-sharing, employee stock ownership or other employee benefit plan of the Corporation or any Subsidiary or any trustee of or fiduciary with respect to any such plan when acting in such capacity) who (without giving effect to the provisions of Article NINTH) (a) is the beneficial owner of Voting Stock representing ten percent (10%) or more of the votes entitled to be cast by the holders of all then outstanding shares of Voting Stock; or (b) is an Affiliate or Associate of the Corporation and at any time within the two-year period immediately prior to the date in question was the beneficial owner of Voting Stock representing ten percent (10%) or more of the votes entitled to be cast by the holders of all then outstanding share of Voting Stock. (5) A person shall be a "beneficial owner" of any Capital Stock (a) which such person or any of its Affiliates or Associates beneficially owns, directly or indirectly; (b) which such person or any of its Affiliates or Associates has, directly or indirectly, (i) the right to acquire (whether such right is exercisable immediately or subject only to the passage of time), pursuant to any agreement, arrangement or understanding or upon the exercise of conversion rights, exchange rights, warrants or options, or otherwise, or (ii) the right to vote pursuant to any agreement, arrangement or understanding; or (c) which are beneficially owned, directly or indirectly, by any other person with which such person or any of its Affiliates or Associates has any agreement, arrangement or understanding for the purpose of acquiring, holding, voting or disposing of any shares of Capital Stock. For the purposes of determining whether a person is an Interested Stockholder pursuant to Paragraph 4 of this Section C, the number of shares of Capital Stock deemed to be outstanding shall include shares deemed beneficially owned by such person through application of Paragraph 5 of this Section C, but shall not include any other shares of Capital Stock that may be issuable pursuant to any agreement, arrangement or understanding, or upon exercise of conversion rights, warrants or options, or otherwise. (6) The terms "Affiliate" and "Associate" shall have the respective meanings ascribed to such terms in Rule 12b-2 under the Act as in effect on January 8, 1985 (the term "registrant" in Rule 12b-2 meaning in this case the Corporation). (7) The term "Subsidiary" means any corporation of which a majority of any class of equity security is beneficially owned by the Corporation; provided, however, that for the purposes of the definition of Interested Stockholder set forth in Paragraph 4 of this Section C, the term "Subsidiary" shall mean only a corporation of which a majority of each class of equity security is beneficially owned by the Corporation. -6- (8) The term "Continuing Director" means any member of the Board of Directors, while such person is a member of the Board of Directors, who is not an Affiliate or Associate or representative of the Interested Stockholder and was a member of the Board prior to the time that the Interested Stockholder became an Interested Stockholder, and any successor of a Continuing Director, while such successor is a member of the Board of Directors, who is not an Affiliate or Associate or representative of the Interested Stockholder and is recommended or elected to succeed the Continuing Director by a majority of Continuing Directors. (9) The term "Substantial Part" means assets having an aggregate Fair Market Value (as hereinafter defined) in excess of ten percent (10%) of the book value of the total consolidated assets of the Corporation and its Subsidiaries as of the end of the Corporation's most recent fiscal year ending prior to the time the stockholders of the Corporation would be required to approve or authorize the Business Combination involving assets constituting any such Substantial Part. (10) The term "Fair Market Value" means (a) in the case of cash, the amount of such cash; (b) in the case of stock, the highest closing sale price, during the 30-day period immediately preceding the date in question, of a share of such stock on the Composite Tape for New York Stock Exchange, Inc. Listed Stocks, or, if such stock is not quoted on the Composite Tape, on the New York Stock Exchange, Inc., or, if such stock is not listed on such exchange, on the principal United States securities exchange registered under the Act on which such stock is listed, or if such stock is not listed on any such exchange, the highest closing bid quotation with respect to a share of such stock, during the 30-day period preceding the date in question, on the National Association of Securities Dealers, Inc. Automated Quotation System or any similar system then in use, or if no such quotations are available, the fair market value on the date in question of a share of such stock as determined by a majority of the Continuing Directors in good faith; and (c) in the case of property other than cash or stock, the fair market value of such property on the date in question as determined in good faith by a majority of the Continuing Directors. D. The Board of Directors shall have the power and duty to determine for the purposes of this Article EIGHTH, on the basis of information known to them after reasonable inquiry, (a) whether a person is an Interested Stockholder, (b) the number of shares of Capital Stock or other securities beneficially owned by any person, (c) whether a person is an Affiliate or Associate of another and (d) whether the assets that are the subject of any Business Combination have, or the consideration to be received for the issuance or transfer of securities by this Corporation or any Subsidiary in any Business Combination has, an aggregate Fair Market Value in excess of the amount set forth in Paragraph 1(b) of Section C of this Article EIGHTH. Any such determination made in good faith shall be binding and conclusive on all parties. E. Nothing contained in this Article EIGHTH shall be construed to relieve any Interested Stockholder from any fiduciary obligation imposed by law. NINTH: A. So long as any person other than the Corporation or any Subsidiary (a "Substantial Stockholder") is (without giving effect to the provisions of this Article NINTH) the beneficial owner of Voting Stock representing ten percent (10%) or more of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock, the record holders of the shares of Voting Stock beneficially owned by such Substantial Stockholder shall have limited voting rights on any matter requiring their vote. With respect to the shares of Voting Stock which would entitle such record holders in the aggregate to cast ten percent (10%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock, such record holders shall be entitled to cast the votes per share specified in this Certificate of Incorporation. With respect to the shares of Voting Stock which would entitle such record holders in the aggregate to cast in excess of ten percent (10%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock, such record holders in the aggregate shall be entitled to cast only one/one hundredth (1/100th) of the votes per share to which a holder of such shares would otherwise be entitled to cast. -7- Notwithstanding anything contained in the two preceding sentences to the contrary, in the event that, after giving effect to the two preceding sentences, the aggregate voting power of such record holders would still exceed fifteen percent (15%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock, the aggregate voting power of such record holders shall be further limited so that such record holders shall be entitled to cast only such number of votes that would equal (after giving effect to the provisions of this Article NINTH) fifteen percent (15%) of the votes entitled to be cast by all holders of outstanding shares of Voting Stock. The aggregate voting power of such record holders, so limited, for all shares of Voting Stock beneficially owned by the Substantial Stockholders shall be allocated proportionately among such record holders. For each such record holder, this allocation shall be accomplished by multiplying the aggregate voting power (after giving effect to the provisions of this Article NINTH) of the outstanding shares of Voting Stock beneficially owned by the Substantial Stockholder by a fraction whose numerator is the number of votes which the shares of Voting Stock owned of record by such record holder would have entitled such record holder to cast were no effect given to this Article NINTH, and whose denominator is the total number of votes which all shares of Voting Stock beneficially owned by the Substantial Stockholder would have entitled their record holders to cast were no effect given to this Article NINTH. B. Notwithstanding any other definition contained in this Certificate of Incorporation, for purposes of Section A of this Article NINTH, the term "Voting Stock" shall include the Common Stock and any class or series of Preferred Stock, if and only if the resolutions of the Board of Directors designating such class or series of Preferred Stock expressly provide that such class or series of Preferred Stock are to be included within the term "Voting Stock" for purposes of Section A of this Article NINTH. C. Except as otherwise provided in this Article NINTH, the presence in person or by proxy, of the holders of record of shares of Voting Stock entiting the holders thereof to cast a majority of the votes (after giving effect, if required, to the provisions of this Article NINTH) entitled to be cast by the holders of all outstanding shares of Voting Stock entitled to vote shall constitute a quorum at all meetings of the stockholders. D. The Board of Directors shall have the power and duty to determine for the purposes of this Article NINTH, on the basis of information known to them after reasonable inquiry, (a) whether a person is a Substantial Stockholder, (b) the number of shares of Common Stock and/or Voting Stock beneficially owned by any person, (c) whether a person is an Affiliate or Associate of another, and (d) the persons who may be deemed to be the record holders of shares beneficially owned by a Substantial Stockholder. Any such determination made in good faith shall be binding and conclusive on all parties. E. The Board of Directors shall have the right to demand that any person who is reasonably believed to be a Substantial Stockholder (or holds of record shares of Voting Stock beneficially owned by any Substantial Stockholder) supply the Corporation with complete information as to (a) the record holder(s) of all shares beneficially owned by such person who is reasonably believed to be a Substantial Stockholder, (b) the number of shares of Common Stock and/or Voting Stock beneficially owned by such person who is reasonably believed to be a Substantial Stockholder and held of record by each such record holder, and (c) any other factual matter relating to the applicability or effect of this Article NINTH, as may reasonably be requested of such person, such person shall furnish such information within ten days after the receipt of such demand. F. Nothing contained in this Article NINTH shall be construed to relieve any Substantial Stockholder from any fiduciary obligation imposed by law. -8- G. The provisions of this Article NINTH shall become null and void of no further force and effect on the fifth anniversary (the "Fifth Anniversary Date") of the date on which the amended charter of Union Mutual Life Insurance Company ("Union Mutual") reflecting the conversion of Union Mutual from a mutual to a stock life insurance company is filed with the Maine Secretary of State, the Maine Attorney General and the Superintendent of the Maine Bureau of Insurance, except that with respect to any person who is or was a Substantial Stockholder at any time before the Fifth Anniversary Date, the record holders of any shares of Voting Stock beneficially owned by such Substantial Stockholder shall have limited voting rights in accordance with the terms of Sections A through F of this Article NINTH at such times after the Fifth Anniversary Date that such Substantial Stockholder is a Substantial Stockholder, as such term is defined in Section A of this Article NINTH. TENTH: When considering a merger, consolidation, Business Combination or similar transaction, the Board of Directors, committees of the Board, individual directors and individual officers may, in considering the best interests of the Corporation and its stockholders, consider the effects of any such transaction upon the employees, customers and suppliers of the Corporation, and upon communities in which offices of the Corporation are located. ELEVENTH: Notwithstanding any other provisions of this Certificate of Incorporation or the By-Laws of the Corporation (and notwithstanding the fact that a lesser percentage or separate class vote may be specified by law, this Certificate of Incorporation or the By-Laws of the Corporation), (i) the affirmative vote of the holders of not less than eighty percent (80%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock, voting together as a single class, shall be required to amend or repeal, or adopt any provisions inconsistent with, Articles SIXTH, SEVENTH, and NINTH, and (ii) the affirmative vote of the holders of (x) not less than eighty percent (80%) of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock voting together as a single class, and (y) not less than a majority of the votes entitled to be cast by the holders of all outstanding shares of Voting Stock which are beneficially owned by persons other than Interested Stockholders, if any, voting together as a single class, shall be required to amend or repeal, or adopt any provisions inconsistent with, Articles EIGHTH and ELEVENTH; provided, however, that, with respect to Articles SIXTH, SEVENTH, EIGHTH, NINTH and ELEVENTH, such special voting requirements shall not apply to, and such special votes shall not be required for, any amendment, repeal or adoption recommended by the Board if a majority of the directors then in office are persons who would be eligible to serve as Continuing Directors. TWELFTH: Whenever a compromise or arrangement is proposed between the Corporation and its creditors or any class of them and/or between the Corporation and its stockholders or any class of them, any court of equitable jurisdiction within the state of Delaware may, on the application in a summary way of the Corporation or of any creditor or stockholder thereof or on the application of any receiver or receivers appointed for the Corporation under the provisions of Section 291 of the GCL or on the application of trustees in dissolution or of any receiver or receivers appointed for the Corporation under the provisions of Section 279 of the GCL, order a meeting of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, to be summoned in such manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, agree to any compromise or arrangement and to any reorganization of the Corporation as a consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to which the said application has been made, be binding on all the creditors or class of creditors, and/or on all the stockholders or class of stockholders, of the Corporation, as the case may be, and also on the Corporation. THIRTEENTH: No director shall be personally liable to the Corporation or any of its stockholders for monetary damages for any breach of fiduciary duty as a director, except for liability (i) for any breach of the director's duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) pursuant to Section 174 of -9- the Delaware General Corporation Law or (iv) for any transaction from which the director derived an improper personal benefit. Any repeal of modification of this Article Thirteenth by the stockholders of the Corporation shall not adversely affect any right of protection of a director of the Corporation existing at the time of such repeal or modification with respect to acts or omissions occurring prior to such repeal or modification. FOURTEENTH: Subject to the provisions of this Certificate of Incorporation, the Corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or thereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation. CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS OF JUNIOR PARTICIPATING PREFERRED STOCK, SERIES A OF UNUM CORPORATION Pursuant to Section 151 of the General Corporation Law of the State of Delaware We, James F. Orr, III, Chairman and Chief Executive Officer, and Kevin J. Tierney, Secretary, of UNUM Corporation, a corporation organized and existing under the General Corporation Law of the State of Delaware, in accordance with the provisions of Section 103 thereof, DO HEREBY CERTIFY: That pursuant to the authority conferred upon the Board of Directors by the Certificate of Incorporation, as amended, of the said Corporation, the said Board of Directors on March 13, 1992, adopted the following resolution creating a series of 1,000,000 shares of Preferred Stock designated as Junior Participating Preferred Stock, Series A: RESOLVED, that pursuant to the authority vested in the Board of Directors of this Corporation in accordance with the provisions of its Certificate of Incorporation, as amended, a series of Preferred Stock of the Corporation be and it hereby is created, and that the designation and amount thereof and the voting powers, preferences and relative, participating, optional and other special rights of the shares of such series, and the qualifications, limitations or restrictions thereof are as follows: Section 1. Designation and Amount. The shares of such series shall be designated as Junior Participating Preferred Stock, Series A (the "Series A Stock") and the number of shares constituting such series shall be 1,000,000. Section 2. Dividends and Distributions. (A) Subject to the prior and superior rights of the holders of any shares of any series of Preferred Stock ranking prior and superior to the shares of Series A Stock with respect to dividends, the holders of shares of Series A Stock shall be entitled to receive, when, as and if declared by the Board of Directors out of funds legally available for the purpose, quarterly dividends payable in cash on the 19th day of February, May, August and November in each year (each such date being referred to herein as a "Quarterly Dividend Payment Date"), commencing on the first Quarterly Dividend Payment Date after the first issuance of a share or fraction of a share of Series A Stock, in an amount per share (rounded to the nearest cent) equal to the greater of (a) $5.00 or (b) subject to the provision for adjustment hereinafter set forth, 100 times the aggregate per share amount of all cash dividends, and 100 times the aggregate per share amount (payable in kind) of all non-cash dividends or other distributions other than a dividend payable in shares of common stock, par value $.10 per share, of the Corporation (the "Common Stock") or a subdivision of the outstanding shares of Common Stock (by reclassification or otherwise), declared on the Common Stock, since the immediately preceding Quarterly Dividend Payment Date, or, with respect to the first Quarterly Dividend Payment Date, since the first issuance of any share or fraction of a share of Series A Junior Participating Preferred Stock. In the event the Corporation shall at any time after March 13, 1992 (the "Rights Declaration Date") (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the amount to which holders of shares of Series A Junior Participating Preferred Stock were entitled immediately prior to such event under clause (b) of the preceding sentence shall be adjusted by multiplying such amount by a fraction the numerator of which is the number of -2- shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. (B) The Corporation shall declare a dividend or distribution on the Series A Stock as provided in paragraph (A) above immediately after it declares a dividend or distribution on the Common Stock (other than a dividend payable in shares of Common Stock); provided that, in the event no dividend or distribution shall have been declared on the Common Stock during the period between any Quarterly Dividend Payment Date and the next subsequent Quarterly Dividend Payment Date, a dividend of $5.00 per share on the Series A Stock shall nevertheless be payable on such subsequent Quarterly Dividend Payment Date. (C) Dividends shall begin to accrue and be cumulative on outstanding shares of Series A Stock from the Quarterly Dividend Payment Date next preceding the date of issue of such shares of Series A Stock, unless the date of issue of such shares is prior to the record date for the first Quarterly Dividend Payment Date, in which case dividends on such shares shall begin to accrue from the date of issue of such shares, or unless the date of issue is a Quarterly Dividend Payment Date or is a date after the record date for the determination of holders of shares of Series A Stock entitled to receive a quarterly dividend and before such Quarterly Dividend Payment Date, in either of which events such dividends shall begin to accrue and be cumulative from such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall not bear interest. Dividends paid on the shares of Series A Stock in an amount less than the total amount of such dividends at the time accrued and payable on such shares shall be allocated pro rata on a share-by-share basis among all such shares at the time outstanding. The Board of Directors may fix a record date for the determination of holders of shares of Series A Stock entitled to receive payment of a dividend or distribution declared thereon, which record date shall be no more than 30 days prior to the date fixed for the payment thereof. Section 3. Voting Rights. The holders of shares of Series A Stock shall have the following voting rights: (A) Subject to the provision for adjustment hereinafter set forth, each share of Series A Stock shall entitle the holder thereof to 100 votes on all matters submitted to a vote of the stockholders of the Corporation. In the event the Corporation shall at any time after the Rights Declaration Date (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each case the number of votes per share to which holders of shares of Series A Stock were entitled immediately prior to such event shall be adjusted by multiplying such number by a fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. (B) Except as otherwise provided herein or by law, the holders of shares of Series A Stock and the holders of shares of Common Stock shall vote together as one class on all matters submitted to a vote of stockholders of the Corporation. (C) (i) If at any time dividends on any Series A Stock shall be in arrears in an amount equal to six (6) quarterly dividends thereon, the occurrence of such contingency shall mark the beginning of a period (herein called a "default period") which shall extend until such time when all accrued and unpaid dividends for all previous quarterly dividend periods and for the current quarterly dividend period on all shares of Series A Stock then outstanding shall have been declared and paid or set apart for payment. During each default period, all holders of Preferred Stock (including holders of the Series A Stock) with dividends in arrears in an amount equal to six (6) quarterly dividends thereon, voting as a class, irrespective of series, shall have the right to elect two (2) Directors. (ii) During any default period, such voting right of the holders of Series A Stock may be exercised initially at a special meeting called pursuant to subparagraph (iii) of this Section 3(C) or at any annual meeting of stockholders, and thereafter at annual meetings of stockholders, provided that neither -3- such voting right nor the right of the holders of any other series of Preferred Stock, if any, to increase, in certain cases, the authorized number of Directors shall be exercised unless the holders of one-third in number of shares of Preferred Stock outstanding shall be present in person or by proxy. The absence of a quorum of the holders of Common Stock shall not affect the exercise by the holders of Preferred Stock of such voting right. At any meeting at which the holders of Preferred Stock shall exercise such voting right initially during an existing default period, they shall have the right, voting as a class, to elect Directors to fill such vacancies, if any, in the Board of Directors as may then exist up to two (2) Directors or, if such right is exercised at an annual meeting, to elect two (2) Directors. If the number which may be so elected at any special meeting does not amount to the required number, the holders of the Preferred Stock shall have the right to make such increase in the number of Directors as shall be necessary to permit the election by them of the required number. After the holders of the Preferred Stock shall have exercised their right to elect Directors in any default period and during the continuance of such period, the number of Directors shall not be increased or decreases except by vote of the holders of Preferred Stock as herein provided or pursuant to the rights of any equity securities ranking senior to or pari passu with the Series A Stock. (iii) Unless the holders of Preferred Stock shall, during an existing default period, have previously exercised their right to elect Directors, the Board of Directors may order, or any stockholder or stockholders owning in the aggregate not less than ten percent (10%) of the total number of shares of Preferred Stock outstanding, irrespective of series, may request, the calling of a special meeting of the holders of Preferred Stock, which meeting shall thereupon be called by the President, a Vice President or the Secretary of the Corporation. Notice of such meeting and of any annual meeting at which holders of Preferred Stock are entitled to vote pursuant to this paragraph (C) (iii) shall be given to each holder of record of Preferred Stock by mailing a copy of such notice to him at his last address as the same appears on the books of the Corporation. Such meeting shall be called for a time not earlier than 20 days and not later than 60 days after such order or request or in default of the calling of such meeting within 60 days after such order or request, such meeting may be called on similar notice by any stockholder or stockholders owning in the aggregate not less than ten percent (10%) of the total number of shares of Preferred Stock outstanding. Notwithstanding the provisions of this paragraph (C) (iii), no such special meeting shall be called during the period within 60 days immediately preceding the date fixed for the next annual meeting of the stockholders. (iv) In any default period, the holders of Common Stock, and other classes of stock of the Corporation if applicable, shall continue to be entitled to elect the whole number of Directors until the holders of Preferred Stock shall have exercised their right to elect two (2) Directors voting as a class, after the exercise of which right (x) the Directors so elected by the holders of Preferred Stock shall continue in office until their successors shall have been elected by such holders or until the expiration of the default period, and (y) any vacancy in the Board of Directors may (except as provided in paragraph (C) (ii) of this Section 3) be filled by vote of a majority of the remaining Directors theretofore elected by the holders of the class of stock which elected the Director whose office shall have become vacant. References in this paragraph (C) to Directors elected by the holders of a particular class of stock shall include Directors elected by such Directors to fill vacancies as provided in clause (y) of the foregoing sentence. (v) Immediately upon the expiration of a default period, (x) the right of the holders of Preferred Stock as a class to elect Directors shall cease, (y) the term of any Directors elected by the holders of Preferred Stock as a class shall terminate, and (z) the number of Directors shall be such number as may be provided for in the certificate of incorporation or by-laws irrespective of any increase made pursuant to the provisions of paragraph (C) (ii) of this Section 3 (such number being subject, however, to change thereafter in any manner provided by law or in the certificate of incorporation or bylaws). Any vacancies in the Board of Directors effected by the provisions of clauses (y) and (z) in the preceding sentence may be filled by a majority of the remaining Directors. (D) Except as set forth herein, holders of Series A Stock shall have no special voting rights and their consent shall not be required (except to the extent they are entitled to vote with holders of Common Stock as set forth herein) for taking any corporate action. -4- Section 4. Certain Restrictions. (A) Whenever quarterly dividends or other dividends or distributions payable on the Series A Stock as provided in Section 2 are in arrears, thereafter and until all accrued and unpaid dividends and distributions, whether or not declared, on shares of Series A Stock outstanding shall have been paid in full, the Corporation shall not (i) declare or pay dividends on, make any other distributions on, or redeem or purchase or otherwise acquire for consideration any shares of stock ranking junior (either as to dividends or upon liquidation, dissolution or winding up) to the Series A Stock; (ii) declare or pay dividends on or make any other distributions on any shares of stock ranking on a parity (either as to dividends or upon liquidation, dissolution or winding up) with the Series A Stock, except dividends paid ratably on the Series A Stock and all such parity stock on which dividends are payable or in arrears in proportion to the total amounts to which the holders of all such shares are then entitled; (iii) redeem or purchase or otherwise acquire for consideration shares of any stock ranking on a parity (either as to dividends or upon liquidation, dissolution or winding up) with the Series A Stock, provided that the Corporation may at any time redeem, purchase or otherwise acquire shares of any such parity stock in exchange for shares of any stock of the Corporation ranking junior (either as to dividends or upon dissolution, liquidation or winding up) to the Series A Stock; (iv) purchase or otherwise acquire for consideration any shares of Series A Stock, or any shares of stock ranking on a parity with the Series A Stock, except in accordance with a purchase offer made in writing or by publication (as determined by the Board of Directors) to all holders of such shares upon such terms as the Board of Directors, after consideration of the respective annual dividend rates and other relative rights and preferences of the respective series and classes, shall determine in good faith will result in fair and equitable treatment among the respective series or classes. (B) The Corporation shall not permit any subsidiary of the Corporation to purchase or otherwise acquire for consideration any shares of stock of the Corporation unless the Corporation could, under paragraph (A) of this Section 4, purchase or otherwise acquire such shares at such time and in such manner. Section 5. Reacquired Shares. Any shares of Series A Stock purchased or otherwise acquired by the Corporation in any manner whatsoever shall be retired and cancelled promptly after the acquisition thereof. All such shares shall upon their cancellation become authorized but unissued shares of Preferred Stock and may be reissued as part of a new series of Preferred Stock to be created by resolution or resolutions of the Board of Directors, subject to the conditions and restrictions on issuance set forth herein. Section 6. Liquidation, Dissolution or Winding Up. (A) Upon any liquidation (voluntary or otherwise), dissolution or winding up of the Corporation, no distribution shall be made to the holders of shares of stock ranking junior (either as to dividends or upon liquidation, dissolution or winding up) to the Series A Stock unless, prior thereto, the holders of shares of Series A Stock shall have received $250 per share, plus an amount equal to accrued and unpaid dividends and distributions thereon, whether or not declared, to the date of such payment (the "Series A Liquidation Preference"). Following the payment of the full amount of the Series A Liquidation Preference, no additional distributions shall be made to the holders of shares of Series A Stock unless, prior thereto, the holders of shares of Common Stock shall have received an amount per share (the "Common Adjustment") equal to the quotient obtained by dividing (i) the Series A Liquidation Preference by (ii) 100 (as appropriately adjusted as set forth in subparagraph C below to reflect such events as stock splits, stock dividends and recapitalizations with respect to the Common Stock) (such number in clause (ii) immediately above being referred to as the "Adjustment Number"). Following the payment of the full amount of the Series A Liquidation Preference and the -5- Common Adjustment in respect of all outstanding shares of Series A Stock and Common Stock, respectively, holders of Series A Stock and holders of shares of Common Stock shall receive their ratable and proportionate share of the remaining assets to be distributed in the ratio of the Adjustment Number to one (1) with respect to such Preferred Stock and Common Stock, on a per share basis, respectively. (B) In the event, however, that there are not sufficient assets available to permit payment in full of the Series A Liquidation Preference and the liquidation preferences of all other series of preferred stock, if any, which rank on a parity with the Series A Stock, then such remaining assets shall be distributed ratably to the holders of such parity shares in proportion to their respective liquidation preferences. In the event, however, that there are not sufficient assets available to permit payment in full of the Common Adjustment, then such remaining assets shall be distributed ratably to the holders of Common Stock. (C) In the event the Corporation shall at any time after the Rights Declaration Date (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the Adjustment Number in effect immediately prior to such event shall be adjusted by multiplying such Adjustment Number by a fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. Section 7. Consolidation, Merger, etc. In case the Corporation shall enter into any consolidation, merger, combination or other transaction in which the shares of Common Stock are exchanged for or changed into other stock or securities, cash and/or any other property, then in any such case the shares of Series A Stock shall at the same time be similarly exchanged or changed in an amount per share (subject to the provision for adjustment hereinafter set forth) equal to 100 times the aggregate amount of stock, securities, cash and/or any other property (payable in kind), as the case may be, into which or for which each share of Common Stock is changed or exchanged. In the event the Corporation shall at any time after the Rights Declaration Date (i) declare any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the outstanding Common Stock into a smaller number of shares, then in each such case the amount set forth in the preceding sentence with respect to the exchange or change of shares of Series A Stock shall be adjusted by multiplying such amount by a fraction the numerator of which is the number of shares of Common Stock outstanding immediately after such event and the denominator of which is the number of shares of Common Stock that were outstanding immediately prior to such event. Section 8. Redemption. The outstanding shares of Series A Stock may be redeemed at the option of the Board of Directors as a whole, but not in part, at any time, or from time to time, at a cash price per share equal to 105 percent of (i) the product of the Adjustment Number times the Average Market Value (as such term is hereinafter defined) of the Common Stock, plus (ii) all dividends which on the redemption date have accrued on the shares to be redeemed and have not been paid, or declared and a sum sufficient for the payment thereof set apart, without interest. The "Average Market Value" is the average of the closing sale prices of the Common Stock during the 30 day period immediately preceding the date before the redemption date on the Composite Tape for New York Stock Exchange Listed Stocks, or, if such stock is not quoted on the Composite Tape, on the New York Stock Exchange, or, if such stock is not listed on such Exchange, on the principal United States securities exchange registered under the Securities Exchange Act of 1934, as amended, on which such stock is listed, or, if such stock is not listed on any such exchange, the average of the closing sale prices with respect to a share of Common Stock during such 30-day period, as quoted on the National Association of Securities Dealers, Inc. Automated Quotations System or any system then in use, or if no such quotations are available, the fair market value of the Common Stock as determined by the Board of Directors in good faith. Section 9. Ranking. The Series A Stock shall rank junior to all other series of the Corporation's Preferred Stock as to the payment of dividends and the distribution of assets, unless the terms of any such series shall provide otherwise. -6- Section 10. Amendment. The Certificate of Incorporation of the Corporation shall not be further amended in any manner which would materially alter or change the powers, preferences or special rights of the Series A Stock so as to affect them adversely without the affirmative vote of the holders of a majority or more of the outstanding shares of Series A Stock, voting separately as a class. Section 11. Fractional Shares. Series A Stock may be issued in fractions of a share which shall entitle the holder, in proportion to such holders fractional shares, to exercise voting rights, receive dividends, participate in distributions and to have the benefit of all other rights of holders of Series A Stock. This Certificate of Designation, Preferences and Rights of Junior Participating Preferred Stock, Series A shall be effective at 9:05 a.m. on March 23, 1992.