UNUMPROVIDENT CORPORATION STOCK PLAN OF 1999 ARTICLE I

Exhibit 10.1

UNUMPROVIDENT CORPORATION

STOCK PLAN OF 1999

ARTICLE I

Purpose

1.1 General. The purpose of the UnumProvident Stock Plan of 1999 (the “Plan”) is to promote the success, and enhance the value, of UnumProvident Corporation (the “Corporation”), by linking the personal interests of its employees, officers, producers and directors to those of Corporation stockholders and by providing such persons with an incentive for outstanding performance. The Plan is further intended to provide flexibility to the Corporation in its ability to motivate, attract, and retain the services of employees, officers, producers and directors upon whose judgment, interest, and special effort the successful conduct of the Corporation’s operation is largely dependent. Accordingly, the Plan permits the grant of incentive awards from time to time to selected employees, officers, producers and directors.

ARTICLE 2

Effective Date

2.1 Effective Date. The Plan was effective as of January 1, 1999 (the “Effective Date”) and has most recently been amended by the Board on February 17, 2004.

2.2 Termination of Plan. No Awards may be granted under the Plan after the ten-year anniversary of the Effective Date, but the Plan shall remain in effect as long as any Awards under it are outstanding.

ARTICLE 3

Definitions

3.1 Definitions. When a word or phrase appears in this Plan with the initial letter capitalized, and the word or phrase does not commence a sentence, the word or phrase shall generally be given the meaning ascribed to it in this Section or in Section 1.1 unless a clearly different meaning is required by the context. The following words and phrases shall have the following meanings:

(a) “Award” means any Option, Stock Appreciation Right, Restricted Stock Award, or Dividend Equivalent Award, or any other right or interest relating to Stock or cash, granted to a Participant under the Plan.

(b) “Award Agreement” means any written agreement, contract, or other instrument or document evidencing an Award.

(c) “Board” means the Board of Directors of the Corporation.

(d) “Change in Control” means and includes the occurrence of any of the following events:

(i) during any period of two consecutive years, individuals who, at the beginning or such period, constitute the Board (the “Incumbent Directors”) cease for any reason to constitute at least a majority of the Board, provided that any person becoming a director and whose election or nomination for election was approved by a vote of at least two-thirds of the Incumbent Directors then on the Board (either by a specific vote or by approval of the proxy statement of the Company in which such person is named as a nominee for director, without written objection to such nomination) shall be an Incumbent Director; provided, however, that no individual initially elected or nominated as a director of the Company as a result of an actual or threatened election contest (as described in Rule 14a-11 under the Act) (“Election Contest”) or other actual or threatened solicitation of proxies or consents by or on behalf of any “person” (as such term is defined in Section 3(a)(9) of the Act and as used in Sections 13(d)(3) and 14(d)(2) of the Act) other than the Board (“Proxy Contest”), including by reason of any agreement intended to avoid or settle any Election or Contest or Proxy Contest, shall be deemed an Incumbent Director;

(ii) any person is or becomes a “beneficial owner” (as defined in Rule 13d-3 under the Act), directly or indirectly, of securities of the Company representing 20% or more of the combined voting power of the Company’s then outstanding securities eligible to vote for the election of the Board (the “Company Voting Securities”); provided, however, that the event described in this paragraph (ii) shall not be deemed to be a Change in Control of the Company by virtue of any of the following acquisitions: (A) by the Company of any subsidiary, (B) by any employee benefit plan (or related trust) sponsored or maintained by the Company or any subsidiary, (C) by an underwriter temporarily holding securities pursuant to an offering of such securities, (D) pursuant to a Non-Qualifying Transaction (as defined in paragraph (iii), or (E) a transaction (other than one described in (iii) below) in which Company Voting Securities are acquired from the Company, if a majority of the Incumbent Directors approve a resolution providing expressly that the acquisition pursuant to this clause (E) does not constitute a Change in Control of the Company under this paragraph (ii);

(iii) the consummation of a merger, consolidation, statutory share exchange or similar form of corporate transaction involving the Company or any of its subsidiaries that requires the approval of the Company’s stockholders, whether for such transaction or the issuance of securities in the transaction (a “Reorganization”), or sale or other disposition of all or substantially all of the Company’s assets to an entity that is not an affiliate of the Company (a “Sale”), unless immediately following such Reorganization or Sale: (A) more than 50% of the total voting power of (x) the corporation resulting from such Reorganization or the corporation which has acquired all or substantially all of the assets of the Company (in either case, the “Surviving Corporation”), or (y) if applicable, the ultimate parent corporation that directly or indirectly has beneficial ownership of 100% of the voting securities eligible to elect directors of the Surviving Corporation (the “Parent Corporation”), is represented by the Company Voting Securities that were outstanding immediately prior to such Reorganization or Sale (or, if applicable, is represented by shares into which such Company Voting Securities were converted pursuant to such Reorganization or Sale), and such voting power among the holders thereof is in substantially the same proportion as the voting power of such Company Voting Securities among the holders thereof immediately prior to the Reorganization or Sale, (B) no person (other than any employee benefit plan (or related trust) sponsored or maintained by the Surviving Corporation or the Parent Corporation) is or becomes the beneficial owner, directly or indirectly, of 20% or more of the total voting power of the outstanding voting securities eligible to elect directors of the Parent Corporation (or, if there is no Parent Corporation, the Surviving Corporation) and (C) at least a

majority of the members of the board of directors of the Parent Corporation (or, if there is no Parent Corporation, the Surviving Corporation) following the consummation of the Reorganization or Sale were Incumbent Directors at the time of the Board’s approval of the execution of the initial agreement providing for such Reorganization or Sale (any Reorganization or Sale which satisfies all of the criteria specified in (A), (B) and (C) above shall be deemed to be a “Non-Qualifying Transaction”); or

(iv) the stockholders of the Company approve a plan of complete liquidation or dissolution of the Company.

Notwithstanding the foregoing, a Change in Control of the Company shall not be deemed to occur solely because any person acquires beneficial ownership of more than 20% of the Company Voting Securities as a result of the acquisition of Company Voting Securities by the Company which reduces the number of Company Voting Securities outstanding; provided, that if after such acquisition by the Company such person becomes the beneficial owner of additional Company Voting Securities that increases the percentage of outstanding Company Voting Securities beneficially owned by such person, a Change in Control of the Company shall then occur.

(e) “Code” means the Internal Revenue Code of 1986, as amended from time to time.

(f) “Committee” means the committee of the Board described in Article 4.

(g) “Corporation” means UnumProvident Corporation, a Delaware corporation.

(h) “Covered Employee” means a covered employee as defined in Code Section 162(m)(3).

(i) “Disability” means any illness or other physical or mental condition of a Participant that renders the Participant incapable of performing his customary and usual duties for the Corporation, or any medically determinable illness or other physical or mental condition resulting from a bodily injury, disease or mental disorder which, in the judgment of the Committee, is permanent and continuous in nature. The Committee may require such medical or other evidence as it deems necessary to judge the nature and permanency of the Participant’s condition. Notwithstanding the above, with respect to an Incentive Stock Option, Disability shall mean Permanent and Total Disability as defined in Section 22(e)(3) of the Code.

(j) “Dividend Equivalent” means a right granted to a Participant under Article 11.

(k) “Effective Date” has the meaning assigned such term in Section 2.1.

(l) “Fair Market Value”, on any date, means (i) if the Common Stock is listed on a securities exchange or traded over the Nasdaq National Market, the average of the high and low market prices reported in The Wall Street Journal at which a Share of Common Stock shall have been sold on such day or on the next preceding trading day if such date was not a trading day, or (ii) if the Common Stock is not listed on a securities exchange or traded over the Nasdaq National Market, the mean between the bid and offered prices as quoted by Nasdaq for such date, provided that if it is determined that the fair market value is not properly reflected by such Nasdaq quotations, Fair Market Value will be determined by such other method as the Committee determines in good faith to be reasonable.

(m) “Incentive Stock Option” means an Option that is intended to meet the requirements of Section 422 of the Code or any successor provision thereto.

(n) “Non-Qualified Stock Option” means an Option that is not an Incentive Stock Option.

(o) “Option” means a right granted to a Participant under Article 7 of the Plan to purchase Stock at a specified price during specified time periods. An Option may be either an Incentive Stock Option or a Non-Qualified Stock Option.

(p) “Parent” means a corporation which owns or beneficially owns a majority of the outstanding voting stock or voting power of the Corporation. Notwithstanding the above, with respect to Incentive Stock Options, the term shall have the same meaning as set forth in Section 424(e) of the Code.

(q) “Participant” means a person who, as an employee, officer, Producer or director of the Corporation or any Parent or Subsidiary, has been granted an Award under the Plan.

(r) “Plan” means the UnumProvident Corporation Stock Plan of 1999, as amended from time to time.

(s) “Producer” means a producer of insurance business for the benefit of the Corporation or its subsidiaries. For purposes of this Plan, Producers are deemed to be consultants of the Corporation or its Parent or Subsidiaries.

(t) “Restricted Stock Award” means Stock granted to a Participant under Article 10 that is subject to certain restrictions and to risk of forfeiture.

(u) “Retirement” means a Participant’s voluntary termination of employment with the Corporation, Parent or Subsidiary at or after age 65 or after attaining age 55 with at least 15 years of service with the Corporation or a Parent or Subsidiary or with an entity that has been acquired by the Corporation or a Parent or Subsidiary, or with the approval of the Committee.

(v) “Stock” means the $.10 par value common stock of the Corporation and such other securities of the Corporation as may be substituted for Stock pursuant to Article 12.

(w) “Stock Appreciation Right” or “SAR” means a right granted to a Participant under Article 8 to receive a payment equal to the difference between the Fair Market Value of a share of Stock as of the date of exercise of the SAR over the grant price of the SAR, all as determined pursuant to Article 8.

(x) “Subsidiary” means any corporation, limited liability company, partnership or other entity of which a majority of the outstanding voting stock or voting power is beneficially owned directly or indirectly by the Corporation. Notwithstanding the above, with respect to Incentive Stock Options, the term shall have the meaning set forth in Section 424(f) of the Code.

(y) “1933 Act” means the Securities Act of 1933, as amended from time to time.

(z) “1934 Act” means the Securities Exchange Act of 1934, as amended from time to time.

ARTICLE 4

Administration

4.1 Committee. The Plan shall be administered by a committee (the “Committee”) appointed by the Board (which Committee shall consist of two or more directors) or, at the discretion of the Board from time to time, the Plan may be administered by the Board. It is intended that the directors appointed to serve on the Committee shall be “non-employee directors” (within the meaning of Rule 16b-3 promulgated under the 1934 Act) and “outside directors” (within the meaning of Code Section 162(m) and the regulations thereunder) to the extent that Rule 16b-3 and, if necessary for relief from the limitation under Code Section 162(m) and such relief is sought by the Corporation, Code Section 162(m), respectively, are applicable. However, the mere fact that a Committee member shall fail to qualify under either of the foregoing requirements shall not invalidate any Award made by the Committee which Award is otherwise validly made under the Plan. The members of the Committee shall be appointed by, and may be changed at any time and from time to time in the discretion of, the Board. During any time that the Board is acting as administrator of the Plan, it shall have all the powers of the Committee hereunder, and any reference herein to the Committee (other than in this Section 4.1) shall include the Board.

4.2 Action By the Committee. For purposes of administering the Plan, the following rules of procedure shall govern the Committee. A majority of the Committee shall constitute a quorum. The acts of a majority of the members present at any meeting at which a quorum is present, and acts approved unanimously in writing by the members of the Committee in lieu of a meeting, shall be deemed the acts of the Committee. Each member of the Committee is entitled to, in good faith, rely or act upon any report or other information furnished to that member by any officer or other employee of the Corporation or any Parent or Subsidiary, the Corporation’s independent certified public accountants, or any executive compensation consultant or other professional retained by the Corporation to assist in the administration of the Plan.

4.3 Authority Of Committee. Except as provided below the Committee has the exclusive power, authority and discretion to:

(a) Designate Participants;

(b) Determine the type or types of Awards to be granted to each Participant;

(c) Determine the number of Awards to be granted and the number of shares of Stock to which an Award will relate;

(d) Determine the terms and conditions of any Award granted under the Plan, including but not limited to, the exercise price, grant price, or purchase price, any restrictions or limitations on the Award, any schedule for lapse of forfeiture restrictions or restrictions on the exercisability of an Award, and accelerations or waivers thereof, based in each case on such considerations as the Committee in its sole discretion determines;

(e) Accelerate the vesting or lapse of restrictions of any outstanding Award, based in each case on such considerations as the Committee in its sole discretion determines;

(f) Determine whether, to what extent, and under what circumstances an Award may be settled in, or the exercise price of an Award may be paid in, cash, Stock, other Awards, or other property, or an Award may be canceled, forfeited, or surrendered;

(g) Prescribe the form of each Award Agreement, which need not be identical for each Participant;

(h) Decide all other matters that must be determined in connection with an Award;

(i) Establish, adopt or revise any rules and regulations as it may deem necessary or advisable to administer the Plan;

(j) Make all other decisions and determinations that may be required under the Plan or as the Committee deems necessary or advisable to administer the Plan;

(k) Amend the Plan or any Award Agreement as provided herein; and

(l) Adopt such modifications, procedures, and subplans as may be necessary or desirable to comply with provisions of the laws of non-U.S. jurisdictions in which the Corporation or any Parent or Subsidiary may operate, in order to assure the viability of the benefits of Awards granted to Participants located in such other jurisdiction and to meet the objectives of the Plan.

Notwithstanding the above, the Board or the Committee may expressly delegate to a special committee consisting of one or more directors who are also officers of the Corporation some or all of the Committee’s authority under subsections (a) through (g) above with respect to those eligible Participants who, at the time of the grant are not, and are not anticipated to become, either (I) Covered Employees or (ii) persons subject to the insider trading rules of Section 16 of the 1934 Act. Further, the Committee may delegate its general administrative duties under the Plan to an officer or employee or committee of officers or employees of the Company.

4.4. Decisions Binding. The Committee’s interpretation of the Plan, any Awards granted under the Plan, any Award Agreement and all decisions and determinations by the Committee with respect to the Plan are final, binding, and conclusive on all parties. No member of the Committee shall be liable for any act done in good faith.

ARTICLE 5

Shares Subject To The Plan

5.1. Number Of Shares. The aggregate number of shares of Stock reserved and available for Awards or which may be used to provide a basis of measurement for or to determine the value of an Award (such as with a Stock Appreciation Right) shall be 17,500,000 of which not more than twenty percent (20%) may be granted as Awards of Restricted Stock or unrestricted Stock Awards, and not more than ten percent (10%) shares of Stock shall be granted in the form of Incentive Stock Options.

5.2. Lapsed Awards and Shares Withheld or Tendered. To the extent that an Award is canceled, terminates, expires or lapses for any reason, any shares of Stock subject to the Award will again be available for the grant of Awards under the Plan. Shares subject to SARs or other Awards settled in cash will be available for the grant of an Award under the Plan. Shares of Stock that are surrendered or withheld from any Award to satisfy a Participant’s income tax withholding obligations, or shares of Stock owned by a Participant that are tendered to pay the exercise price of Options granted under the Plan will be available for the grant of Awards under the Plan. Stock delivered by the Corporation, any shares of stock with respect to which Awards are made by the Corporation and any shares of Common Stock with respect to which the Corporation becomes obligated to make Awards, through the assumption of, or in substitution for, the outstanding awards previously granted by a acquired entity, shall not be counted against the shares available for Awards under this Plan.

5.3. Stock Distributed. Any Stock distributed pursuant to an Award may consist, in whole or in part, of authorized and unissued Stock, treasury Stock or Stock purchased on the open market.

5.4. Limitation On Awards. Notwithstanding any provision in the Plan to the contrary, but subject to adjustment as provided in Section 12.4 the maximum number of shares of Stock with respect to one or more Options and/or SARs that may be granted during any one calendar year under the Plan to any one Participant shall be 1,000,000. The maximum Fair Market Value (measured as of the date of grant) of any Awards other than Options and SARs that may be received by any one Participant (less any consideration paid by the Participant for such Award) during any one calendar year under the Plan shall be $10,000,000.

ARTICLE 6

Eligibility

6.1. General. Awards may be granted only to individuals who are employees, officers, Producers or directors of the Corporation or a Parent or Subsidiary.

ARTICLE 7

Stock Options

7.1. General. The Committee is authorized to grant Options to Participants on the following terms and conditions:

(a) Exercise Price. The exercise price per share of Stock under an Option shall be determined by the Committee, provided that the exercise price for any Option shall not be less than the Fair Market Value as of the date of the grant.

(b) Time And Conditions Of Exercise. The Committee shall determine the time or times at which an Option may be exercised in whole or in part. The Committee also shall determine the performance or other conditions, if any, that must be satisfied before all or part of an Option may be exercised. The Committee may waive any exercise provisions at any time in whole or in part based upon factors as the Committee may determine in its sole discretion so that the Option becomes exercisable or vested at an earlier date.

(c) Payment. The Committee shall determine the methods by which the exercise price of an Option may be paid, the form of payment, including, without limitation, cash, shares of Stock, or other property (including “cashless exercise” arrangements), and the methods by which shares of Stock shall be delivered or deemed to be delivered to Participants; provided, however, that if shares of Stock are used to pay the exercise price of an Option, such shares must have been held by the Participant for at least six months. When shares of Stock are delivered, such delivery may be by attestation of ownership or actual delivery of one or more certificates. Failure by the Committee to specify methods by which the exercise price of an Option may be paid or the form of payment shall be deemed to express the Committee’s determination that all methods and forms of payment under the Plan are permitted for that Option.

(d) Evidence Of Grant. All Options shall be evidenced by a written Award Agreement between the Corporation and the Participant. The Award Agreement shall include such provisions, not inconsistent with the Plan, as may be specified by the Committee.

(e) Additional Options Upon Exercise. The Committee may, in its sole discretion, provide in an Award Agreement, or in an amendment thereto, for the automatic grant of a new Option to any Participant who delivers shares of Stock as full or partial payment of the exercise price of the original Option. Any new Option granted in such a case (i) shall be for the same number of shares of Stock as the Participant delivered in exercising the original Option, (ii) shall have an exercise price of 100% of the Fair Market Value of the surrendered shares of Stock on the date of exercise of the original Option (the grant date for the new Option), and (iii) shall have a term equal to the unexpired term of the original Option.

(f) Exercise Term. In no event may an Option be exercisable for more than ten years from the date of its grant.

7.2. Incentive Stock Options. The terms of any Incentive Stock Options granted under the Plan must comply with the following additional rules:

(a) Exercise Price. The exercise price per share of Stock shall be set by the Committee, provided that the exercise price for any Incentive Stock Option shall not be less than the Fair Market Value as of the date of the grant.

(b) Exercise. In no event may any Incentive Stock Option be exercisable for more than ten years from the date of its grant.

(c) Lapse Of Option. An Incentive Stock Option shall lapse under the earliest of the following circumstances; provided, however, that the Committee may, prior to the lapse of the Incentive Stock Option under the circumstances described in paragraphs (3), (4) and (5) below, provide in writing that the Option will extend until a later date, but if Option is exercised after the dates specified in paragraphs (3), (4) and (5) below, it will automatically become a Non-Qualified Stock Option:

(1) The Incentive Stock Option shall lapse as of the option expiration date set forth in the Award Agreement.

(2) The Incentive Stock Option shall lapse ten years after it is granted, unless an earlier time is set in the Award Agreement.

(3) If the Participant terminates employment for any reason other than as provided in paragraph (4) or (5) below, the Incentive Stock Option shall lapse, unless it is previously exercised, three months after the Participant’s termination of employment; provided, however, that if the Participant’s employment is terminated by the Corporation for cause (as determined by the Corporation ), the Incentive Stock Option shall (to the extent not previously exercised) lapse immediately.

(4) If the Participant terminates employment by reason of his Disability, the Incentive Stock Option shall lapse, unless it is previously exercised, one year after the Participant’s termination of employment.

(5) If the Participant dies while employed, or during the three - month period described in paragraph (3) or during the one - year period described in paragraph (4) and before the Option otherwise lapses, the Option shall lapse one year after the Participant’s death. Upon the Participant’s death, any exercisable Incentive Stock Options may be exercised by the Participant’s beneficiary, determined in accordance with Section 11.6.

Unless the exercisability of the Incentive Stock Option is accelerated as provided in Article 11, if a Participant exercises an Option after termination of employment, the Option may be exercised only with respect to the shares that were otherwise vested on the Participant’s termination of employment.

(d) Individual Dollar Limitation. The aggregate Fair Market Value (determined as of the time an Award is made) of all shares of Stock with respect to which Incentive Stock Options are first exercisable by a Participant in any calendar year may not exceed $100,000.00.

(e) Ten Percent Owners. No Incentive Stock Option shall be granted to any individual who, at the date of grant, owns stock possessing more than ten percent of the total combined voting power of all classes of stock of the Corporation or any Parent or Subsidiary unless the exercise price per share of such Option is at least 110% of the Fair Market Value per share of Stock at the date of grant and the Option expires no later than five years after the date of grant.

(f) Expiration Of Incentive Stock Options. No Award of an Incentive Stock Option may be made pursuant to the Plan after the day immediately prior to the tenth anniversary of the Effective Date.

(g) Right To Exercise. During a Participant’s lifetime, an Incentive Stock Option may be exercised only by the Participant or, in the case of the Participant’s Disability, by the Participant’s guardian or legal representative.

(h) Directors. The Committee may not grant an Incentive Stock Option to a non - employee director. The Committee may grant an Incentive Stock Option to a director who is also an employee of the Corporation or Parent or Subsidiary but only in that individual’s position as an employee and not as a director.

ARTICLE 8

Stock Appreciation Rights

8.1. Grant of SARs. The Committee is authorized to grant SARs to Participants on the following terms and conditions:

(a) Right To Payment. Upon the exercise of a Stock Appreciation Right, the Participant to whom it is granted has the right to receive the excess, if any, of:

(1) The Fair Market Value of one share of Stock on the date of exercise; over

(2) The grant price of the Stock Appreciation Right as determined by the Committee, which shall not be less than the Fair Market Value of one share of Stock on the date of grant.

(b) Other Terms. All awards of Stock Appreciation Rights shall be evidenced by an Award Agreement. The terms, methods of exercise, methods of settlement, form of consideration payable in settlement, and any other terms and conditions of any Stock Appreciation Right shall be determined by the Committee at the time of the grant of the Award and shall be reflected in the Award Agreement.

ARTICLE 9

Restricted Stock Awards

9.1. Grant Of Restricted Stock. The Committee is authorized to make Awards of Restricted Stock to Participants in such amounts and subject to such terms and conditions as may be selected by the Committee. All Awards of Restricted Stock shall be evidenced by a Restricted Stock Award Agreement.

9.2. Issuance And Restrictions. Restricted Stock shall be subject to such restrictions on transferability and other restrictions as the Committee may impose (including, without limitation, limitations on the right to vote Restricted Stock or the right to receive dividends on the Restricted Stock). These restrictions may lapse separately or in combination at such times, under such circumstances, in such installments, upon the satisfaction of performance goals or otherwise, as the Committee determines at the time of the grant of the Award or thereafter.

9.3. Forfeiture. Except as otherwise determined by the Committee at the time of the grant of the Award or thereafter, upon termination of employment during the applicable restriction period or upon failure to satisfy a performance goal during the applicable restriction period, Restricted Stock that is at that time subject to restrictions shall be forfeited and reacquired by the Corporation; provided, however, that the Committee may provide in any Award Agreement that restrictions or forfeiture conditions relating to Restricted Stock will be waived in whole or in part in the event of terminations resulting from specified causes, and the Committee may in other cases waive in whole or in part restrictions or forfeiture conditions relating to Restricted Stock.

9.4. Certificates For Restricted Stock. Restricted Stock granted under the Plan may be evidenced in such manner as the Committee shall determine. If certificates representing shares of Restricted Stock are registered in the name of the Participant, certificates must bear an appropriate legend referring to the terms, conditions, and restrictions applicable to such Restricted Stock.

ARTICLE 10

Dividend Equivalents

10.1 Grant Of Dividend Equivalents. The Committee is authorized to grant Dividend Equivalents to Participants subject to such terms and conditions as may be selected by the Committee. Dividend Equivalents shall entitle the Participant to receive payments equal to dividends with respect to all or a portion of the number of shares of Stock subject to an Award, as determined by the Committee. The Committee may provide that Dividend Equivalents be paid or distributed when accrued or be deemed to have been reinvested in additional shares of Stock, or otherwise reinvested.

ARTICLE 11

Provisions Applicable To Awards

11.1. Stand-alone, Tandem, And Substitute Awards. Awards granted under the Plan may, in the discretion of the Committee, be granted either alone or in addition to, in tandem with, or in substitution for, any other Award granted under the Plan. If an Award is granted in substitution for another Award, the Committee may require the surrender of such other Award in consideration of the grant of the new Award. Awards granted in addition to or in tandem with other Awards may be granted either at the same time as or at a different time from the grant of such other Awards.

11.2. Term Of Award. The term of each Award shall be for the period as determined by the Committee, provided that in no event shall the term of any Incentive Stock Option or a Stock Appreciation Right granted in tandem with the Incentive Stock Option exceed a period of ten years from the date of its grant (or, if Section 7.2(e) applies, five years from the date of its grant).

11.3. Form Of Payment For Awards. Subject to the terms of the Plan and any applicable law or Award Agreement, payments or transfers to be made by the Corporation or a Parent or Subsidiary on the grant or exercise of an Award may be made in such form as the Committee determines at or after the time of grant, including without limitation, cash, Stock, other Awards, or other property, or any combination, and may be made in a single payment or transfer, in installments, or on a deferred basis, in each case determined in accordance with rules adopted by, and at the discretion of, the Committee.

11.4. Limits On Transfer. No right or interest of a Participant in any unexercised or restricted Award may be pledged, encumbered, or hypothecated to or in favor of any party other than the Corporation or a Parent or Subsidiary, or shall be subject to any lien, obligation, or liability of such Participant to any other party other than the Corporation or a Parent or Subsidiary. No unexercised or restricted Award shall be assignable or transferable by a Participant other than by will or the laws of descent and distribution or, except in the case of an Incentive Stock Option, pursuant to a domestic relations order that would satisfy Section 414(p)(1)(A) of the Code if such Section applied to an Award under the Plan; provided, however, that the Committee may (but need not) permit other transfers where

the Committee concludes that such transferability (i) does not result in accelerated taxation, (ii) does not cause any Option intended to be an Incentive Stock Option to fail to be described in Code Section 422(b), and (iii) is otherwise appropriate and desirable, taking into account any factors deemed relevant, including without limitation, state or federal tax or securities laws applicable to transferable Awards.

11.5 Beneficiaries. Notwithstanding Section 11.4, a Participant may, in the manner determined by the Committee, designate a beneficiary to exercise the rights of the Participant and to receive any distribution with respect to any Award upon the Participant’s death. A beneficiary, legal guardian, legal representative, or other person claiming any rights under the Plan is subject to all terms and conditions of the Plan and any Award Agreement applicable to the Participant, except to the extent the Plan and Award Agreement otherwise provide, and to any additional restrictions deemed necessary or appropriate by the Committee. If no beneficiary has been designated or survives the Participant, payment shall be made to the Participant’s estate. Subject to the foregoing, a beneficiary designation may be changed or revoked by a Participant at any time provided the change or revocation is filed with the Committee.

11.6. Stock Certificates. All Stock issuable under the Plan is subject to any stop-transfer orders and other restrictions as the Committee deems necessary or advisable to comply with federal or state securities laws, rules and regulations and the rules of any national securities exchange or automated quotation system on which the Stock is listed, quoted, or traded. The Committee may place legends on any Stock certificate or issue instructions to the transfer agent to reference restrictions applicable to the Stock.

11.7 Acceleration Upon Death, Disability Or Retirement. Notwithstanding any other provision in the Plan or any Participant’s Award Agreement to the contrary, upon the Participant’s death or Disability during his employment or service as a producer or director or upon the Participant’s Retirement, all outstanding Options, Stock Appreciation Rights, and other Awards in the nature of rights that may be exercised shall become fully exercisable and all restrictions on outstanding Awards shall lapse. Any Option or Stock Appreciation Rights Awards shall thereafter continue or lapse in accordance with the other provisions of the Plan and the Award Agreement. To the extent that this provision causes Incentive Stock Options to exceed the dollar limitation set forth in Section 7.2(d), the excess Options shall be deemed to be Non-Qualified Stock Options.

11.8. Acceleration Upon A Change In Control. Except as otherwise provided in the Award Agreement, upon the occurrence of a Change in Control, all outstanding Options, Stock Appreciation Rights, and other Awards in the nature of rights that may be exercised shall become fully exercisable and all restrictions on outstanding Awards shall lapse; provided, however that such acceleration will not occur if, in the opinion of the Corporation’s accountants, such acceleration would preclude the use of “pooling of interest” accounting treatment for a Change in Control transaction that (a) would otherwise qualify for such accounting treatment, and (b) is contingent upon qualifying for such accounting treatment. To the extent that this provision causes Incentive Stock Options to exceed the dollar limitation set forth in Section 7.2(d), the excess Options shall be deemed to be Non-Qualified Stock Options.

11.9. Acceleration Upon Certain Events Not Constituting A Change In Control. In the event of the occurrence of any circumstance, transaction or event not constituting a Change in Control (as defined in Section 3.1) but which the Board of Directors deems to be, or to be reasonably likely to lead to, an effective change in control of the Corporation of a nature that would be required to be reported in response to Item 6(e) of Schedule 14A of the 1934 Act, the Committee may in its sole discretion declare all outstanding Options, Stock Appreciation Rights, and other Awards in the nature of rights that may be exercised to be fully exercisable, and/or all restrictions on all outstanding Awards to have lapsed, in each

case, as of such date as the Committee may, in its sole discretion, declare, which may be on or before the consummation of such transaction or event. To the extent that this provision causes Incentive Stock Options to exceed the dollar limitation set forth in Section 7.2(d), the excess Options shall be deemed to be Non-Qualified Stock Options.

11.10. Acceleration For Any Other Reason. Regardless of whether an event has occurred as described in Section 11.8 or 11.9 above, the Committee may in its sole discretion at any time determine that all or a portion of a Participant’s Options, Stock Appreciation Rights, and other Awards in the nature of rights that may be exercised shall become fully or partially exercisable, and/or that all or a part of the restrictions on all or a portion of the outstanding Awards shall lapse, in each case, as of such date as the Committee may, in its sole discretion, declare. The Committee may discriminate among Participants and among Awards granted to a Participant in exercising its discretion pursuant to this Section 11.10.

11.11 Effect Of Acceleration. If an Award is accelerated under Section 11.8 or 11.9, the Committee may, in its sole discretion, provide (i) that the Award will expire after a designated period of time after such acceleration to the extent not then exercised, (ii) that the Award will be settled in cash rather than Stock, (iii) that the Award will be assumed by another party to the transaction giving rise to the acceleration or otherwise be equitably converted in connection with such transaction, or (iv) any combination of the foregoing. The Committee’s determination need not be uniform and may be different for different Participants whether or not such Participants are similarly situated.

11.12. Performance Goals. The Committee may determine that any Award granted pursuant to this Plan to a Participant shall be determined on the basis of one or more of the following measures of corporate performance, alone or in combination, which may be expressed in terms of Corporation-wide objectives or in terms of objectives that relate to the performance of a division, business unit, region, department or function within the Corporation or a subsidiary: (a) return on equity, (b) overall or selected premium or sales growth, (c) stock performance, (d) expense efficiency ratios (ratio of expenses to premium income), (e) earnings per share, (f) market share, (g) revenue, (h) customer service measures or indices, (i) underwriting efficiency and/or quality, (j) persistency factors, (k) total shareholder return, (l) earnings before interest and taxes (EBIT), (m) earnings before interest, taxes, depreciation and amortization (EBITDA), (n) net income, (o) return on assets, (p) return on net assets, (q) economic value added, (r) shareholder value added, (s) embedded value added, (t) net operating profit, (u) net operating profit after tax, (v) combined ratio, (w) expense ratio, (x) loss ratio, (y) premiums, (z) return on capital, (aa) return on invested capital, (bb) profit margin, or (cc) risk based capital. The Committee has the right for any reason to reduce or increase the Award, notwithstanding the achievement of a specified goal.

11.13. Termination Of Employment. Whether military, government or other service or other leave of absence shall constitute a termination of employment shall be determined in each case by the Committee at its discretion, and any determination by the Committee shall be final and conclusive. A termination of employment shall not occur in a circumstance in which a Participant transfers from the Corporation to one of its Parents or Subsidiaries, transfers from a Parent or Subsidiary to the Corporation, or transfers from one Parent or Subsidiary to another Parent or Subsidiary or in the discretion of the Committee as specified at or prior to such occurrence, in the case of a spin-off, sale or disposition of the Participant’s employer from the Corporation or any Parent or Subsidiary. To the extent that this provision causes the Incentive Stock Options to extend beyond three months from the date a Participant is deemed to be an employee of the Corporation, a Parent or Subsidiary for purposes of Section 424(f) of the Code, the Options held by such Participant shall be deemed to be Non-Qualified Stock Options.

ARTICLE 12

Changes In Capital Structure

12.1. General. In the event of a corporate transaction involving the Corporation (including without limitation, any stock dividend, stock split, extraordinary cash dividend, recapitalization, reorganization, merger, consolidation split-up, spin-off, combination or exchange of shares) the authorization limits under Section 5.1 and 5.4 shall be adjusted proportionately, and the Committee may adjust Awards to preserve the benefits or potential benefits of the Awards. Action by the Committee may include: (I) adjustment of the number and kind of shares which may be delivered under the Plan; (ii) adjustment of the number and kind of shares subject to outstanding Awards, adjustment of the exercise price of outstanding Awards; and (iv) any other adjustments that the Committee determines to be equitable. Without limiting the foregoing, in the event a stock dividend or stock split is declared upon the Stock, the authorization limits under Section 5.1 and 5.4 shall be increased proportionately, and the shares of Stock then subject to each Award shall be increased proportionately without any change in the aggregate purchase price therefor.

ARTICLE 13

Amendment, Modification And Termination

13.1. Amendment, Modification And Termination. The Board or the Committee may, at any time and from time to time, amend, modify or terminate the Plan without stockholder approval; provided, however, that the Board or Committee may condition any amendment or modification on the approval of stockholders of the Corporation if such approval is necessary or deemed advisable with respect to tax, securities or other applicable laws, policies or regulations.

13.2 Awards Previously Granted. At any time and from time to time, the Committee may amend, modify or terminate any outstanding Award without approval of the Participant; provided, however, that subject to the terms of the applicable Award Agreement such amendment, modification or termination shall not, without the Participant’s consent, reduce or diminish the value of such Award determined as if the Award had been exercised, vested, cashed in or otherwise settled on the date of such amendment or termination; and provided further that, the original term of any Option may not be extended and, except as otherwise provided in the anti-dilution provision of the Plan, the exercise price of any Option may not be reduced. No termination, amendment, or modification of the Plan shall adversely affect any Award previously granted under the Plan, without the written consent of the Participant.

ARTICLE 14

General Provisions

14.1. No Rights To Awards. No Participant or employee, officer, producer or director shall have any claim to be granted any Award under the Plan, and neither the Corporation nor the Committee is obligated to treat Participants or eligible participants uniformly.

14.2. No Stockholder Rights. No Award gives the Participant any of the rights of a stockholder of the Corporation unless and until shares of Stock are in fact issued to such person in connection with such Award.

14.3. Withholding. The Corporation or any Parent or Subsidiary shall have the authority and the right to deduct or withhold, or require a Participant to remit to the Corporation, an amount sufficient to satisfy federal, state, and local taxes (including the Participant’s FICA obligation) required by law to be withheld with respect to any taxable event arising as a result of the Plan. With respect to withholding required upon any taxable event under the Plan, the Committee may, at the time the Award is granted or thereafter, require or permit that any such withholding requirement be satisfied, in whole or in part, by withholding from the Award shares of Stock having a Fair Market Value on the date of withholding equal to the minimum amount (and not any greater amount) required to be withheld for tax purposes, all in accordance with such procedures as the Committee establishes.

14.4. No Right To Continued Service. Nothing in the Plan or any Award Agreement shall interfere with or limit in any way the right of the Corporation or any Parent or Subsidiary to terminate any Participant’s employment or status as an officer, Producer or director at any time, nor confer upon any Participant any right to continue as an employee, officer, Producer or director of the Corporation or any Parent or Subsidiary.

14.5. Unfunded Status Of Awards. The Plan is intended to be an “unfunded” plan for incentive and deferred compensation. With respect to any payments not yet made to a Participant pursuant to an Award, nothing contained in the Plan or any Award Agreement shall give the Participant any rights that are greater than those of a general creditor of the Corporation or any Parent or Subsidiary.

14.6. Relationship To Other Benefits. No payment under the Plan shall be taken into account in determining any benefits under any pension, retirement, savings, profit sharing, group insurance, welfare or benefit plan of the Corporation or any Parent or Subsidiary unless provided otherwise in such other plan.

14.7. Expenses. The expenses of administering the Plan shall be borne by the Corporation and its Parents or Subsidiaries.

14.8. Titles And Headings. The titles and headings of the Sections in the Plan are for convenience of reference only, and in the event of any conflict, the text of the Plan, rather than such titles or headings, shall control.

14.9. Gender And Number. Except where otherwise indicated by the context, any masculine term used herein also shall include the feminine; the plural shall include the singular and the singular shall include the plural.

14.10. Fractional Shares. No fractional shares of Stock shall be issued and the Committee shall determine, in its discretion, whether cash shall be given in lieu of fractional shares or whether such fractional shares shall be eliminated by rounding up.

14.11. Government and other Regulations. The obligation of the Corporation to make payment of awards in Stock or otherwise shall be subject to all applicable laws, rules, and regulations, and to such approvals by government agencies as may be required. The Corporation shall be under no obligation to register under the 1933 Act, or any state securities act, any of the shares of Stock issued in connection with the Plan. The shares issued in connection with the Plan may in certain circumstances be exempt from registration under the 1933 Act, and the Corporation may restrict the transfer of such shares in such manner as it deems advisable to ensure the availability of any such exemption.

14.12. Governing Law. To the extent not governed by federal law, the Plan and all Award Agreements shall be construed in accordance with and governed by the laws of the State of Tennessee.

14.13. Additional Provisions. Each Award Agreement may contain such other terms and conditions as the Committee may determine; provided that such other terms and conditions are not inconsistent with the provisions of this Plan.

The foregoing is hereby acknowledged as being the UnumProvident Corporation Stock Plan of 1999 as adopted and amended by the Board of Directors of the Corporation on February 17, 2004.