Exhibit 10 (a)


                            UNION PACIFIC CORPORATION

                     EXECUTIVE STOCK PURCHASE INCENTIVE PLAN


1.      PURPOSE

The Union  Pacific  Executive  Stock  Purchase  Incentive  Plan (the  "Plan") is
intended to (i) encourage and facilitate ownership of shares of the common stock
of  Union  Pacific  Corporation  (the  "Company")  by  officers  and  other  key
executives  of  the  Company  and  its  Subsidiaries,   (ii)  create  a  working
environment where  participating  executives of the Company and its Subsidiaries
share in the same risks and rewards as the  Company's  other  shareholders,  and
(iii) create a retention vehicle by:

?    providing participating executives of the Company and its Subsidiaries with
     an opportunity to significantly increase their ownership of common stock of
     the Company  coupled with incentive  awards based on the performance of the
     Company and its common stock and

?    providing this opportunity in a manner that places participating executives
     at risk in the event of inadequate Company performance.

2.      DEFINITIONS

Except where the content otherwise indicates, the following definitions apply:

"Applied  Dividends"  means  regular cash  dividends  on Common Stock  purchased
pursuant  to a Purchase  Award which are to be applied to offset  (partially  or
wholly) interest  accruing on the Purchase Loan as required  pursuant to Section
7(d)(i)  and which the  Company's  stock  transfer  agent  shall be  irrevocably
directed by each Participant to deliver directly to the Company for such purpose
to the extent required to comply with Section 7(d)(i).

"Board" means Board of Directors of the Company.

"Cause" means the deliberate, willful or gross misconduct of the Participant, as
 determined by the Committee.

"Code" means the Internal Revenue Code of 1986, as amended.

"Combination  Deferred  Award"  means  the  grant  to a  Participant,  upon  the
Participant's  exercise of the Purchase Award, of Deferred Performance Award #1,
Deferred  Performance  Award  #2,  Deferred  Performance  Award #3 and  Deferred
Service Incentive Award, as described in Section 8.

"Commission" means the Securities and Exchange Commission.

"Committee"  means the Compensation and Benefits  Committee of the Board or such
other  committee of the Board as may be designated  by the Board,  the Committee
being  composed  of not less than two  persons  who  qualify  as  "disinterested
persons" as defined in Rule 16b-3(c)(2),  as promulgated by the Commission under
the 1934 Act, or any successor definition adopted by the Commission.

"Common Stock" means the Common Stock, $2.50 par value per Share, of the
 Company.

"Company" means Union Pacific Corporation, a Utah corporation,  or any successor
corporation.
"Deferred  Performance  Awards"  means the  following  awards,  as  described in
Section 8: Deferred  Performance  Award #1,  Deferred  Performance  Award #2 and
Deferred Performance Award #3.

"Deferred  Service  Incentive  Award" means the award so named and  described in
Section 8.

"Designated  Payment  Date" means the date  designated by the Company for a cash
payment to a Participant (or the estate of a deceased  Participant) with respect
to any part or all of a Combination Deferred Award, which date shall be no later
than  January 31, 2003 and, in the case of any cash  payment  with  respect to a
Participant's  Combination Deferred Award after the Participant's Termination of
Service  because of death,  no later than six months after such  Termination  of
Service.

"Effective Date" means the date the Plan is adopted by the Board.

"Interest  Rate" means the  "applicable  federal rate" in effect on the Purchase
Date for loans with a final  maturity  date of January  31,  2006 with  interest
compounded annually, as determined by Section 1274(d) of the Code.

"Market Price" with respect to a Share shall mean, for any given date (or in the
event such date is not a Trading Day with respect to the Share, the last Trading
Day prior to such  date),  the  average of the high and low  trading  prices per
Share on such date, as reported in The Wall Street Journal  listing of composite
transactions for New York Stock Exchange issues.

"1934 Act" means the Securities Exchange Act of 1934, as amended,  and the rules
and regulations promulgated by the Commission thereunder.

"Participant"  means  each  eligible  employee  of  the  Company  or  any of its
Subsidiaries who is designated by the Committee to receive a Purchase Award.

"Performance Criteria" means the following three criteria:

        Criterion   #1:  For  twenty   consecutive   calendar  days  during  the
        Performance  Period the Market  Price of a Share has  increased at least
        15% over the Purchase Price;

        Criterion #2:  Either of the following two events has occurred:
               (i) The Company has achieved  annual earnings per Share equal to,
               or greater than,  $5.00 per Share during any calendar year in the
               Performance Period or (ii) Criterion #3 has been achieved; and

        Criterion #3:  Either of the following two events has occurred:
               (i) The Company has achieved  annual earnings per Share equal to,
               or greater than,  $6.00 per Share during any calendar year in the
               Performance Period or (ii) The Market Price of a Share for twenty
               consecutive  calendar  days  during  the  Performance  Period has
               equaled or exceeded $85.00.

"Performance  Period" means,  with respect to each Purchase Award, the period of
time  beginning on the Purchase  Date with  respect to such  Purchase  Award and
ending on January 31, 2003.

"Plan" means this Union Pacific  Corporation  Executive Stock Purchase Incentive
Plan, as amended from time to time in accordance with the Plan's provisions.

"Purchase Award" means an award to a Participant  permitting such Participant to
purchase  Shares  pursuant to Section 6 at the  Purchase  Price,  together  with
related  Purchase Loan,  Combination  Deferred Award and Special  Deferred Award
rights upon exercise of the Purchase Award.

"Purchase  Date" means the date a  Participant  purchases  Shares  pursuant to a
Purchase Award.

"Purchase  Loan" means an extension of credit to the  Participant by the Company
evidenced by a Purchase Note.

"Purchase  Note"  means a full  recourse  promissory  note with  respect  to the
Purchase Loan in substantially the same form as set forth on Exhibit A.

"Purchase  Price" of a Share means fair market  value of a Share on the Purchase
Date, as determined by the Committee.

"Remaining  Balance" means the principal balance of the Purchase Loan (including
accrued but unpaid interest)  outstanding  immediately  following the end of the
Performance  Period  and the  making  of any  prepayments  required  by  Section
7(d)(ii).

"Service" means employment with the Company or its Subsidiaries.

"Share" means a share of the Company's Common Stock.

"Special  Criterion"  means  attaining a Market  Price per Share which equals or
exceeds  $100.00 for twenty  consecutive  calendar  days during the  Performance
Period.

"Special   Deferred   Award"  means  the  grant  to  a  Participant,   upon  the
Participant's  exercise of the Purchase Award, of the Special Deferred Award, as
described in Section 9.

"Subsidiary"  means a  corporation  (or  partnership,  joint  venture,  or other
enterprise) of which the Company owns or controls,  directly or indirectly,  50%
or more of the  outstanding  shares of stock  normally  entitled to vote for the
election of directors (or comparable equity participation and voting power).

"Termination of Service" means a Participant's  termination of Service such that
he or  she  is no  longer  an  employee  of  either  the  Company  or any of its
Subsidiaries for any reason whatsoever; provided, however, that, for purposes of
this Plan, a Participant who becomes subject to a long-term  disability  (within
the  meaning  of the  Company's  long-term  disability  plan  (or  the  relevant
Subsidiary's  long-term  disability plan), as in effect from time to time) shall
be deemed to be  continuing  his or her Service  during such period of long-term
disability.

"Total Purchase  Price" means,  with respect to each  Participant,  the Purchase
Price multiplied by the number of Shares purchased pursuant to the Participant's
Purchase Award.

"Trading Day" means, with respect to the Common Stock, a day on which the Common
Stock is publicly traded on the New York Stock Exchange.

3.      SHARES SUBJECT TO THE PLAN

The  aggregate  number of Shares  that may be  issued  under the Plan  shall not
exceed 1,100,000 Shares.

4.      TERM OF THE PLAN

The Plan shall become  effective  upon adoption by the Board.  The Plan shall be
terminated on January 31, 2003;  provided,  that  Combination  Deferred  Awards,
Special  Awards  and  Purchase  Loans  outstanding  as of such date shall not be
affected or impaired by the  termination of the Plan;  provided  further that no
Purchase Awards shall be granted after December 31, 1999.

5.      ELIGIBLE EMPLOYEES

All  officers  of the Company  and other key  executives  of the Company and its
Subsidiaries who, in the opinion of the Committee,  can materially influence the
long-term  performance  of the Company and/or its  Subsidiaries  are eligible to
receive a  Purchase  Award.  The  Committee  shall  have the power and  complete
discretion  to select  those  eligible  employees  who are to  receive  Purchase
Awards.

6.      STOCK PURCHASE

(a)  Grant of Purchase Award. The number of Shares  purchasable under a Purchase
     Award for any  Participant and the Purchase Date shall be determined by the
     Committee.  The Committee shall,  with respect to each Purchase Award, give
     written  notice to each  Participant  receiving such Purchase Award stating
     (i) the maximum and minimum  number  (which  numbers may be  identical)  of
     Shares that may be purchased  under the Purchase  Award,  (ii) the Purchase
     Date and (iii) the Interest Rate and other terms pertaining to the Purchase
     Loan.

(b)  Exercise of Purchase  Award. A Participant  shall exercise a Purchase Award
     by  delivering  to the Company on the Purchase Date (or within a reasonable
     time  thereafter  specified by the Company) (i) a notice stating the number
     of Shares (not less than the  minimum  number and not more than the maximum
     number specified in the Purchase Award) such Participant elects to purchase
     on the  Purchase  Date,  and (ii) an executed  Purchase  Note and any other
     documents required pursuant to the Plan. Any Participant who does not elect
     to purchase at least the minimum  number of Shares under the Purchase Award
     on the Purchase Date (or within a reasonable time  thereafter  specified by
     the Company)  shall  forfeit any rights under the Plan with respect to such
     Purchase  Award,  including,  without  limitation,  any right to  receive a
     Purchase Loan,  Combination Deferred Award or Special Award related to such
     Purchase Award.

(c)  Closing  Time.  The exercise of the Purchase  Award by a  Participant,  the
     delivery of the Purchase Note and the issuance by the Company of the Shares
     purchased  pursuant to the Purchase  Award shall be effective at 5:00 p.m.,
     New York City time, on the Purchase Date (the  "Closing  Time").  After the
     Closing Time,  such  Participant  shall be a stockholder of the Company for
     all  purposes.   Notwithstanding  anything  herein  to  the  contrary,  the
     Committee shall have the absolute right, in its sole discretion,  to revoke
     any Purchase Award, including,  without limitation,  any right to receive a
     Purchase Loan,  Combination Deferred Award or Special Award related to such
     Purchase Award, prior to the Closing Time.

7.      LOAN PROVISIONS

(a)  General.  The Company shall extend a Purchase  Loan to a  Participant  upon
     exercise of a Purchase  Award subject to the terms and conditions set forth
     in this Section 7. The  original  principal  amount of the  Purchase  Loan,
     which shall be unsecured,  shall be equal to the Total Purchase Price. Such
     Purchase  Loan shall be  evidenced  by a Purchase  Note with full  recourse
     against  the  Participant  as maker of the  note.  The  obligations  of the
     Participant  under the Purchase  Note shall be  unconditional  and absolute
     and,  without  limiting  the  generality  of the  foregoing,  shall  not be
     released,  discharged or otherwise affected by any change in the existence,
     structure  or  ownership of the  Company,  or any  insolvency,  bankruptcy,
     reorganization  or other  similar  proceeding  affecting the Company or its
     assets or the market value of the Common Stock or any resulting  release or
     discharge of any  obligation  of the Company or the existence of any claim,
     set-off or other rights which the  Participant may have at any time against
     the Company or any other  person,  whether in  connection  with the Plan or
     with any unrelated transactions, provided that nothing herein shall prevent
     the assertion of any such claim by separate suit or counterclaim.

        Notwithstanding  anything to the contrary in this Section 7, the Company
        shall not be required to make any Purchase Loan to a Participant  if the
        making of such  Purchase  Loan will (i) cause the Company to violate any
        covenant or similar provision in any indenture,  loan agreement or other
        agreement,  or (ii) violate any applicable federal,  state or local law,
        provided, that the failure to make such Purchase Loan shall be deemed to
        revoke the  exercise  of the related  Purchase  Award  unless  otherwise
        specified by the Participant or if the Company is not satisfied with the
        creditworthiness of the Participant.

(b)     Interest.  Interest on the principal  balance of the Purchase Loan shall
        accrue annually, in arrears, at the Interest Rate.

(c)     Term. The term of the Purchase Loan for any  Participant  shall begin on
        such Participant's  Purchase Date and, subject to prepayment as provided
        in Sections  7(d) and 7(e),  have a final  maturity  date of January 31,
        2006.  The  Remaining  Balance of the Purchase  Loan shall be payable in
        three equal annual  installments  on January 31, 2004,  January 31, 2005
        and January 31,  2006,  with the  interest  accruing  (offset by Applied
        Dividends,  if  Criterion  #1 was not  achieved  during the  Performance
        Period) on the unpaid Remaining Balance payable annually, in arrears, on
        each such January 31.

(d)     Prepayments Not Related to Termination of Service.

(i)  Dividends.  To the extent  the  Participant  is  entitled  to regular  cash
     dividends on Common Stock  purchased  under the Plan,  until the earlier of
     the  achievement  of  Performance  Criterion  #1 or  payment in full of the
     Purchase Loan (including accrued and unpaid interest), such dividends shall
     be delivered by the Company's stock transfer agent to the Company to offset
     (wholly or partially) the accrued  interest on the Purchase Loan,  pursuant
     to an irrevocable  written  direction  given by the  Participant.  Upon and
     after the achievement of Performance Criterion #1, all such dividends shall
     be paid  directly  to the  Participant.  If,  prior to the  achievement  of
     Performance  Criterion  #1, the  Participant  is entitled  to regular  cash
     dividends  which  exceed the accrued  interest on the Purchase  Loan,  such
     excess shall be paid directly to the Participant.

(ii) Cash Payments with respect to Combination  Deferred  Award.  In the event a
     Participant  (or the estate of a deceased  Participant)  receives  any cash
     payments with respect to the Participant's  Deferred  Performance Awards or
     Deferred  Service  Incentive Award or any cash payments made by the Company
     under Section  8(h)(i) after the earlier of (i)  Termination of Service due
     to death or (ii) the end of the Performance Period, the Participant (or the
     Participant's  estate) shall  immediately  (partially or wholly) prepay the
     principal  balance of the Purchase Loan (or the accrued and unpaid interest
     thereon in the case of a cash payment with respect to Deferred  Performance
     Award #1),  to the extent,  if any,  that such  principal  balance (or such
     interest in the case of a cash payment with respect to Deferred Performance
     Award #1)  remains  unpaid at such time,  with an amount  equal to the full
     amount of all such cash payments upon receipt thereof.

(iii)Optional  Prepayments.  Any  Participant  (or  the  estate  of  a  deceased
     Participant)  may prepay all of the Purchase  Loan  (including  accrued and
     unpaid  interest)  at  any  time,  but  partial  prepayments  shall  not be
     permitted.
(e)  Prepayment Obligations Related to Termination of Service. In the event of a
     Participant's  Termination  of Service  because of death,  any  outstanding
     balance  (including accrued and unpaid interest) of the Purchase Loan shall
     be due and  payable in full six months  from the date of the  Participant's
     death.  In the event of a  Participant's  Termination  of  Service  for any
     reason other than death,  any outstanding  balance  (including  accrued and
     unpaid  interest) of the Purchase  Loan shall be due and payable in full on
     the later of (i) the 90th day following such Termination of Service or (ii)
     the 90th day following the first date on which the Participant may sell the
     Common Stock purchased under the Plan without incurring liability under the
     federal securities laws, including Section 16 of the 1934 Act (limited,  in
     the case of Section  16, to  liability  relating  to  purchases  or sale of
     Common Stock or any derivative  security occurring prior to the Termination
     of Service). If (i) a Participant's  Termination of Service is due to death
     during the  Performance  Period or an  involuntary  Termination  of Service
     without  Cause  during  the  Performance  Period,  (ii)  on  the  date  the
     outstanding  balance of the Purchase Loan becomes due and payable  pursuant
     to this Section  7(e),  the aggregate  Market Price of the Shares  acquired
     under  the  Participant's  Purchase  Award is less  than the sum of (x) the
     outstanding  balance of the  Purchase  Loan  (including  accrued and unpaid
     interest)  on such date,  as reduced by any  prepayment  made  pursuant  to
     Section 7(d),  and (y) the income and  employment  tax liability  resulting
     from any cash payments with respect to the Combination  Deferred Award, and
     (iii) if all Shares so acquired are still held by the  Participant  (or the
     Participant's  estate),  then,  on  such  date  (if  so  requested  by  the
     Participant or the Participant's  estate) the Company shall accept from the
     Participant  (or the  Participant's  estate) the surrender of all Shares so
     acquired by the Participant in full satisfaction of the outstanding balance
     of the Purchase Loan (including accrued and unpaid interest).

8.      COMBINATION DEFERRED AWARD - DESCRIPTION, PAYMENT AND FORFEITURE

(a)  Combination  Deferred  Award.  Upon  any  Participant's   exercise  of  the
     Participant's  Purchase  Award,  the Company shall grant the  Participant a
     Combination  Deferred Award,  consisting of Deferred  Performance Award #1,
     Deferred  Performance Award #2, Deferred  Performance Award #3 and Deferred
     Service  Incentive Award,  subject to the terms and conditions set forth in
     this  Section 8. Any payment with  respect to a  Participant's  Combination
     Deferred  Award shall be made by the Company on its behalf and/or on behalf
     of the Subsidiary by which the  Participant  was employed on the Designated
     Payment  Date.  Any  Subsidiary  which so employed  the  Participant  shall
     reimburse  the Company for such  payment.  No payment  shall be made by the
     Company with respect to any Participant's  Combination Deferred Award until
     the Participant has made arrangements with respect to any federal, state or
     local tax  withholding  requirements  applicable  to such payment which are
     satisfactory to the Company

(b)  Deferred  Performance Award #1. In the event that Criterion #1 is achieved,
     each Participant then holding a Deferred  Performance Award #1 shall become
     entitled to a deferred  cash payment with respect  thereto,  subject to the
     terms and conditions set forth in this Section 8. On the Designated Payment
     Date,  the Company shall pay to the  Participant,  with respect to Deferred
     Performance  Award #1, a cash  amount  equal to the  interest  accrued  and
     remaining  unpaid on the Purchase  Loan (after any  application  of Applied
     Dividends) as of the Designated Payment Date.  Further, if Criterion #1 has
     been achieved during the Performance  Period,  but accrued  interest on the
     Purchase  Loan is payable on January  31,  2004,  January  31, 2005 and /or
     January 31, 2006  pursuant to Section 7(c),  then,  on each such date,  the
     Company shall pay to the Participant,  with respect to Deferred Performance
     Award #1, a cash  amount  equal to the  interest  becoming  payable on such
     date.
(c)  Deferred  Performance Award #2. In the event that Criterion #2 is achieved,
     each Participant then holding a Deferred  Performance Award #2 shall become
     entitled to a deferred  cash payment with respect  thereto,  subject to the
     terms and conditions set forth in this Section 8. On the Designated Payment
     Date,  the Company shall pay to the  Participant,  with respect to Deferred
     Performance  Award #2, a cash amount equal to one-third of the  outstanding
     principal balance of the Purchase Loan as of the Designated Payment Date.

(d)  Deferred  Performance Award #3. In the event that Criterion #3 is achieved,
     each Participant then holding a Deferred  Performance Award #3 shall become
     entitled to a deferred  cash payment with respect  thereto,  subject to the
     terms and conditions set forth in this Section 8. On the Designated Payment
     Date,  the Company shall pay to the  Participant,  with respect to Deferred
     Performance  Award #3, a cash amount equal to one-third of the  outstanding
     principal balance of the Purchase Loan as of the Designated Payment Date.

(e)  Deferred Service Incentive Award. If the Service of a Participant who holds
     a Deferred Service Incentive Award is continuous from the Effective Date to
     the end of the Performance Period, the Participant shall become entitled to
     a deferred  cash payment  with respect to such award,  subject to the terms
     and conditions set forth in this Section 8. On the Designated Payment Date,
     the Company  shall pay to the  Participant,  with  respect to the  Deferred
     Service   Incentive  Award,  a  cash  amount  equal  to  one-third  of  the
     outstanding  principal  balance of the Purchase  Loan as of the  Designated
     Payment Date.

(f)  Forfeiture of  Combination  Deferred Award Upon Certain Sales of Shares and
     Certain  Prepayments of Purchase Loan.  Notwithstanding any other provision
     of this  Section 8, a  Participant's  Combination  Deferred  Award shall be
     immediately  forfeited if the Participant,  during the Performance  Period,
     either (i) sells any Shares  acquired  under a Purchase Award or (ii) makes
     an optional prepayment on the Purchase Loan described in Section 7(d)(iii).
     A transfer of a  Participant's  Shares to a revocable trust as to which the
     Participant   retains  voting  and   investment   power  (which  powers  of
     revocation,  voting and  investment  may be shared  with the  Participant's
     spouse) or a transfer to joint  ownership  with such  Participant's  spouse
     shall not be deemed a sale for purposes of this  Section  8(f) and,  solely
     for the  purposes of this Plan,  such Shares shall be deemed to be owned by
     the Participant.

(g)  Application  of Payments  Made Pursuant to Section 8.  Notwithstanding  any
     other  provision  of this  Section 8, an amount equal to the full amount of
     any payment made by the Company  pursuant to this Section 8 with respect to
     a Deferred  Performance Award and/or Deferred Service Incentive Award shall
     be  immediately  applied in  accordance  with  Section  7(d)(ii)  to prepay
     (partially  or wholly) the  principal  balance of the Purchase Loan (or the
     accrued  and unpaid  interest  thereon in the case of a cash  payment  with
     respect to Deferred Performance Award #1), to the extent, if any, that such
     principal  balance  (or such  interest in the case of a cash  payment  with
     respect to Deferred  Performance Award #1) remains unpaid on the Designated
     Payment Date.

(h)     Treatment of a Termination of Service.

(i)  Upon a Participant's  Termination of Service during the Performance  Period
     for any reason except death, the Participant  shall forfeit the Combination
     Deferred  Award.  Upon a  Participant's  Termination  of Service during the
     Performance  Period  due  to  death,  unless  the  Participant  shall  have
     previously  forfeited the  Combination  Deferred  Award pursuant to Section
     8(f),  the  Participant's  estate  shall be entitled to a cash payment with
     respect to (i) the Deferred  Service  Incentive Award  calculated as if the
     Participant's  Service had  continued  through  the end of the  Performance
     Period  and (ii) any  Deferred  Performance  Award as to which the  related
     Performance  Criterion has been achieved before the Participant's death. On
     the  Designated  Payment  Date,  the  Company  shall pay,  to the  deceased
     Participant's  estate,  the cash  amount  provided  in this  Section 8 with
     regard to each award described in the immediately preceding sentence.

(ii) If a  Participant's  Termination  of  Service  is due to death  during  the
     Performance  Period or an involuntary  Termination of Service without Cause
     during the  Performance  Period and the  Company  accepts  Shares  acquired
     pursuant to the  Participant's  Purchase Award in full  satisfaction of the
     Purchase Loan in accordance  with the last sentence of Section 7(e),  then,
     no later than the fifth business day following such acceptance, the Company
     shall pay to the Participant (or the Participant's  estate) the cash amount
     necessary for the  reimbursement of any income and employment taxes payable
     by the  Participant  (or the  Participant's  estate) as a result of (i) the
     acceptance  by the Company of such Shares in  satisfaction  of the Purchase
     Loan, (ii) any payment made with respect to the Combination  Deferred Award
     and (iii) the reimbursement payment made pursuant to this Section 8(h)(ii).

9.      SPECIAL DEFERRED AWARD

(a)     Upon any Participant's exercise of the Participant's Purchase Award, the
        Company shall grant the Participant a Special Deferred Award, subject to
        the terms and  conditions  set forth in this Section 9. Any payment with
        respect to a Participant's  Special  Deferred Award shall be made by the
        Company on its behalf  and/or on behalf of the  Subsidiary  by which the
        Participant was employed on the Designated  Payment Date. Any Subsidiary
        which so employed the  Participant  shall reimburse the Company for such
        payment.

(b)     In the event that the Special  Criterion is achieved,  each  Participant
        then holding a Special Deferred Award shall be entitled to be reimbursed
        by the Company on the Designated Payment Date for the federal income tax
        payable on the amounts paid with respect to a Combination Deferred Award
        pursuant to Section 8, subject to the terms and  conditions set forth in
        this Section 9. Such  reimbursement  shall be computed using the maximum
        marginal rate for ordinary  taxable  income in effect on the  Designated
        Payment  Date.  The  reimbursement  for  federal  income  tax under this
        Section 9 shall not  itself be  grossed  up for any  federal  income tax
        payable as a result of this reimbursement.

(c)  Notwithstanding  any other  provision  of this  Section 9, a  Participant's
     Special  Deferred Award shall be immediately  forfeited if the Participant,
     during the Performance Period, either (i) sells any Shares acquired under a
     Purchase  Award or (ii) makes an optional  prepayment  on the Purchase Loan
     described in Section 7(d)(iii).  A transfer of a Participant's  Shares to a
     revocable trust as to which the  Participant  retains voting and investment
     power (which powers of revocation, voting and investment may be shared with
     the  Participant's  spouse)  or a  transfer  to joint  ownership  with such
     Participant's  spouse  shall  not be  deemed  a sale for  purposes  of this
     Section 9(iii) and, solely for the purposes of this Plan, such Shares shall
     be deemed to be owned by the Participant.

(d)     Termination of Service.

        Upon a  Participant's  Termination  of Service  during  the  Performance
        Period for any reason except death,  the  Participant  shall forfeit the
        Special  Deferred  Award.  Upon a  Participant's  Termination of Service
        during the Performance Period due to death, unless the Participant shall
        have previously forfeited the Special Deferred Award pursuant to Section
        9(c), the Participant's estate shall be entitled to be reimbursed by the
        Company an amount  calculated  in  accordance  with  Section 9(b) if the
        related  Special  Criterion has been achieved  before the  Participant's
        death.  On the Designated  Payment Date, the Company shall reimburse the
        deceased Participant's estate the amount provided in this Section 9 with
        regard  to the  Special  Deferred  Award  described  in the  immediately
        preceding sentence.

10.     PLAN ADMINISTRATION

The Plan shall be  administered  by the  Committee.  If at any time no Committee
shall be in office,  the functions of the Committee  specified in the Plan shall
be exercised by the  "disinterested  directors" on the Board (as defined in Rule
16b-3(c)(2)  under the 1934 Act).  Subject to the  provisions  of the Plan,  the
Committee shall interpret the Plan and make such rules as it deems necessary for
the  proper  administration  of the Plan,  shall  make all other  determinations
necessary or advisable for the  administration of the Plan and shall correct any
defect or supply any omission or reconcile any  inconsistency in the Plan in the
manner and to the extent that the  Committee  deems  desirable to carry the Plan
into effect. Among other things, the Committee shall have the authority, subject
to the terms of the Plan, to determine (i) the  individuals to whom the Purchase
Awards are  granted,  (ii) the time or times the  Purchase  Awards are  granted,
(iii)  the  Purchase  Dates  for such  Purchase  Awards,  (iv) the basis for any
Termination of Service,  including whether or not it was for Cause or otherwise,
(v) the forms,  terms and provisions of any documents under the Plan,  including
amending or modifying the terms of the Plan. Without limiting the foregoing,  in
the event of a  recapitalization,  stock split,  stock dividend,  combination or
exchange of shares, merger,  consolidation,  spin-off or any other change in the
corporate  structure  or  shares of the  Company,  the  Committee  may make such
adjustments as it deems appropriate in the Performance  Criteria and other terms
of the Plan. Any action taken or determination made by the Committee pursuant to
this  paragraph  and the other  paragraphs of the Plan in which the Committee is
given  discretion  shall be final  and  conclusive  on all  parties.  The act or
determination  of a majority of the  Committee  shall be deemed to be the act or
determination of the entire  Committee.  The Committee may consult with counsel,
who may be counsel to the Company,  and such other advisors as the Committee may
deem  necessary  and/or  desirable,  and the members of the Committee  shall not
incur any  liability  for any action  taken in good faith in  reliance  upon the
advice of counsel or any other advisor.


11.     AMENDMENT AND DISCONTINUANCE OF THE PLAN

The Board,  upon the  recommendation  of the  Committee,  may amend,  suspend or
terminate the Plan at any time, subject to the provisions of this Section 11. No
amendment,  suspension or termination of the Plan may,  without the consent of a
Participant,  adversely affect such  Participant's  rights under the Plan in any
material respect.

12.     MISCELLANEOUS PROVISIONS

(a)     Unsecured Status of Claim. Participants and their beneficiaries,  heirs,
        successors  and  assigns  shall  have  no  legal  or  equitable  rights,
        interests or claims in any  specific  property or assets of the Company.
        No assets of the  Company  shall be held under any trust for the benefit
        of Participants,  their beneficiaries,  heirs, successors or assigns, or
        held in any  way as  collateral  security  for  the  fulfillment  of the
        Company's obligations under the Plan.

        Any and all of the  Company's  assets  shall be, and shall  remain,  the
        general unpledged and unrestricted assets of the Company.  The Company's
        obligations  under the Plan  shall be  merely  that of an  unfunded  and
        unsecured promise of the Company to pay employee  compensation  benefits
        in the future.

(b)     Employment Not Guaranteed.  Nothing contained in the Plan nor any action
        taken in the administration of the Plan shall be construed as a contract
        of employment or as giving a Participant any right to be retained in the
        Service of the Company.

(c)  Nonassignability.  No person shall have any right to commute, sell, assign,
     transfer, pledge, anticipate,  mortgage or otherwise encumber,  hypothecate
     or convey in advance of actual receipt the deferred cash incentive, if any,
     payable under the Plan, or any part thereof, or any interest therein, which
     are, and all rights to which are, expressly declared to be unassignable and
     nontransferable.  No portion of the amounts payable shall,  prior to actual
     payment, be subject to seizure,  attachment,  lien or sequestration for the
     payment of any debts, judgments,  alimony or separate maintenance owed by a
     Participant or any other person, nor be transferable by operation of law in
     the  event  of  the  Participant's  or any  other  person's  bankruptcy  or
     insolvency.  Any such  transfer or  attempted  transfer in violation of the
     preceding  provisions  shall be considered  null and void. In addition,  no
     derivative  security (as defined in Rule  16a-1(c),  as  promulgated by the
     Commission under the 1934 Act, or any successor  definition  adopted by the
     Commission)  issued under the Plan shall be  transferable  by a Participant
     (to the extent  transferable under the Plan) other than by will or the laws
     of descent and distribution or pursuant to a qualified  domestic  relations
     order as defined by the Code, or Title I of the Employee  Retirement Income
     Security Act of 1974 or the rules promulgated thereunder.

(d)     Separability,  Validity.  Transactions  under this Plan are  intended to
        qualify  under  Rule  16b-3  of the  1934  Act.  If any of the  terms or
        provisions of this Plan conflict  with the  requirements  of Rule 16b-3,
        then such terms and provisions shall be deemed inoperative to the extent
        they so conflict with such requirements. In the event that any provision
        of the Plan is held to be invalid, void or unenforceable, the same shall
        not  affect,  in any  respect  whatsoever,  the  validity  of any  other
        provision of the Plan.

(e)  Withholding  Tax.  The  Company  shall,  on its behalf and on behalf of its
     Subsidiaries,  withhold  from all  benefits  due  under  the Plan an amount
     sufficient  to  satisfy  any  federal,  state  and  local  tax  withholding
     requirements;   provided,   however,   that  each  Participant  shall  make
     arrangements   satisfactory  to  the  Company  with  respect  to  any  such
     withholding  requirements  applicable to the payments provided in Section 8
     with respect to the Participant's  Combination  Deferred Award prior to the
     making of such payments and any such withholding requirements applicable to
     any acceptance by the Company of Shares in  satisfaction of a Participant's
     Purchase Loan pursuant to Section 7(e) prior to such acceptance.

(f)     Applicable  Law. The Plan shall be governed in accordance  with the laws
        of the State of Utah without regard to the  application of the conflicts
        of law provisions thereof. The obligation of the Company with respect to
        the grant and  exercise  of  Purchase  Awards  shall be  subject  to all
        applicable  laws,  rules  and  regulations  and  such  approvals  by any
        governmental agencies as may be required, including, without limitation,
        the  effectiveness  of any  registration  statement  required  under the
        Securities Act of 1933, as amended, and the rules and regulations of any
        securities exchange on which the Common Stock may be listed.

(g)     Inurement of Rights and  Obligations.  The rights and obligations  under
        the Plan shall inure to the benefit of, and shall be binding  upon,  the
        Company,  its successors  and assigns,  and the  Participants  and their
        beneficiaries.

(h)     Notice. All notices and other communications required or permitted to be
        given  under this Plan  shall be in writing  and shall be deemed to have
        been duly given if delivered  personally or mailed first class,  postage
        prepaid,  as follows:  (A) if to the Company--at its principal  business
        address to the attention of the Secretary; (B) if to any Participant--at
        the last address of the Participant  known to the sender at the time the
        notice or other communication is sent.

(i)  Exclusion from Pension and other Benefit Plan Computation. By exercise of a
     Purchase Award,  each Participant  shall be deemed to have agreed that such
     Purchase Award and any amounts paid with respect to a Deferred  Performance
     Award or a Deferred Service Incentive Award under Section 8, as applicable,
     or with respect to a Special  Deferred  Award under  Section 9, are special
     incentive  compensation that will not be taken into account, in any manner,
     as salary,  compensation  or bonus in determining the amount of any payment
     under any pension, retirement or other employee benefit plan of the Company
     or any of its Subsidiaries. In addition, the estate and each beneficiary of
     a deceased  Participant  shall be deemed to have agreed that such  Purchase
     Award and any Deferred Performance Award,  Deferred Service Incentive Award
     or Special Deferred Award, as applicable, will not affect the amount of any
     life  insurance  coverage,  if any,  provided  by the Company or any of its
     Subsidiaries on the life of the Participant which is payable to such estate
     or  beneficiary  under any life  insurance  plan covering  employees of the
     Company or any of its Subsidiaries.



                                                                     Exhibit A

                              UNION PACIFIC CORPORATION
                          FULL RECOURSE PROMISSORY NOTE

                                  ("PURCHASE NOTE")


$[                    ]                             [                  ], 1999


               FOR VALUE RECEIVED,  the undersigned,  (the  "Borrower"),  hereby
promises  to  pay  to  UNION  PACIFIC  CORPORATION,   a  Utah  corporation  (the
"Company"), or to the legal holder of this Purchase Note at the time of payment,
the  principal  sum (the  "Principal  Sum") of [ ] ($ ) in  lawful  money of the
United States of America.  The Borrower also agrees to pay interest (computed on
the basis of a 365 or 366 day year,  as the case may be) on any  portion  of the
Principal Sum that remains  outstanding,  from and after the  effective  date of
this  Purchase  Note until the entire  Principal  Sum has been paid in full,  at
6.02%,  compounded  annually;  provided,  however,  that in no event  shall such
interest be charged to the extent it would violate any applicable usury law. The
obligations represented by this Purchase Note shall be with full recourse to the
Borrower.  Each  capitalized  term used herein but not defined herein shall have
the meaning  assigned to such term in the Union  Pacific  Corporation  Executive
Stock  Purchase  Incentive  Plan,  as in effect on the date hereof (the "Plan"),
regardless of whether such Plan shall remain in effect.

               The  proceeds  received by the  Borrower  shall be used solely to
acquire  shares of common  stock,  par value  $2.50 per  share,  of the  Company
("Stock")  (the  shares  so  acquired  being  hereinafter  referred  to  as  the
"Shares").

               This Purchase Note is subject to the following  further terms and
conditions:

               1.  Principal and  Interest.  Subject to Sections 7(d) and (e) of
the Plan, the Principal Sum then  outstanding and all accrued  interest  thereon
shall become due and payable on January 31, 2006.  Subject to Sections  7(d) and
(e) of the Plan,  the  Remaining  Balance shall be payable in three equal annual
installments  on January 31, 2004,  January 31, 2005 and January 31, 2006,  with
the interest  accruing on the unpaid  Remaining  Balance  payable  annually,  in
arrears, on each such January 31.

               2. Payment and  Prepayment.  All payments and  prepayments of the
Principal Sum of and the accrued interest on this Purchase Note shall be made to
the Company or its order,  or to the legal holder of this  Purchase Note or such
holder's  order,  in  lawful  money  of the  United  States  of  America  (or by
assignment  of cash  awards  which may become  payable to the  Borrower  (or the
estate of the  deceased  Borrower)  by the Company  pursuant to the Plan and are
required  by the Plan and  Section  3 hereof  to be  immediately  repaid  by the
Borrower  to the  Company) at the  principal  offices of the Company (or at such
other place as the holder  hereof shall notify the Borrower in writing).  If any
date on which a payment  shall be made is a Saturday,  Sunday or legal  holiday,
then such payment shall be made on the next  succeeding  business day. Upon full
and final payment of the Principal Sum of and interest  accrued on this Purchase
Note, it shall be surrendered to the Borrower.

               3.     Prepayments Not Related to Termination of Service.

               (a) Dividends.  To the extent the Borrower is entitled to regular
cash dividends on the Shares, until Performance  Criterion #1 has been achieved,
such  dividends,  if any,  shall be applied by the Company to offset  (wholly or
partially)  the accrued  interest  on the  outstanding  principal  amount of the
Purchase Note.

               (b) Cash Payments with respect to Combination  Deferred Award. In
the event the Borrower (or the estate of a deceased  Borrower) receives any cash
payments with respect to the Borrower's Deferred  Performance Awards or Deferred
Service  Incentive  Award or any cash payments made by the Company under Section
8(h)(i) of the Plan after the earlier of (i) Termination of Service due to death
or (ii) the end of the  Performance  Period,  the  Borrower  (or the  Borrower's
estate) shall immediately (partially or wholly) prepay the Principal Sum of this
Purchase Note (or the accrued and unpaid  interest in the case of a cash payment
with respect to Deferred  Performance Award #1), to the extent, if any, that the
Principal  Sum (or such  interest in the case of a cash  payment with respect to
Deferred Performance Award #1) remains unpaid at such time, with an amount equal
to the full amount of all such cash payments upon receipt thereof.

               (c)  Optional  Prepayments.  The  Borrower  (or the  estate  of a
deceased  Borrower) may prepay all of this Purchase Note (including  accrued and
unpaid interest) at any time, but partial prepayments shall not be permitted.

               4. Prepayment  Obligations  Related to Termination of Service. In
the event of the  Borrower's  Termination  of  Service  because  of  death,  any
outstanding  balance  (including  accrued and unpaid  interest) of this Purchase
Note shall be due and payable in full six months from the date of the Borrower's
death.  In the event of the  Borrower's  Termination  of Service  for any reason
other  than  death,  any  outstanding  balance  (including  accrued  and  unpaid
interest) of this Purchase Note shall be due and payable in full on the later of
(i) the 90th day  following  such  Termination  of  Service or (ii) the 90th day
following  the first  date on which the  Borrower  may sell the  Shares  without
incurring  liability  under the federal  securities  laws.  If (i) a  Borrower's
Termination  of Service  is due to death  during  the  Performance  Period or an
involuntary  Termination of Service without Cause during the Performance Period,
(ii) on the date the  outstanding  balance of this Purchase Note becomes due and
payable  pursuant to this  Section 4, the  aggregate  Market Price of the Shares
acquired  under  the  Borrower's  Purchase  Award  is less  than  the sum of the
outstanding  balance  of  this  Purchase  Note  (including  accrued  and  unpaid
interest) on such date and the income and payroll tax liability  resulting  from
any cash payments with respect to the Combination  Deferred Award,  and (iii) if
all  Shares  so  acquired  are still  held by the  Borrower  (or the  Borrower's
estate),  then, on such date (if so requested by the Borrower or the  Borrower's
estate),  the Company shall accept from the Borrower (or the Borrower's  estate)
the surrender of all Shares so acquired by the Borrower in full  satisfaction of
the  outstanding  balance of this  Purchase Note  (including  accrued and unpaid
interest).

               5.  Remedies . Each of the  following  shall be Events of Default
under this Purchase Note:

               (a) the Borrower  defaults in the due and punctual payment of all
or any part of the  principal of this  Purchase  Note when and as the same shall
become due and payable,  whether at the stated maturity thereof, by notice of or
demand for prepayment, or otherwise;

               (b) the Borrower  defaults in the due and punctual payment of any
interest on this Purchase  Note when and as such  interest  shall become due and
payable and such default shall have continued for a period of five days;

               (c)  the  Borrower   shall  (i)  apply  for  or  consent  to  the
appointment of, or the taking of possession by, a receiver,  custodian,  trustee
or  liquidator;  (ii) be generally  unable to pay the  Borrower's  debts as such
debts  become  due;  (iii)  make a general  assignment  for the  benefit  of the
Borrower's  creditors;  (iv)  commence a voluntary  case under the United States
Bankruptcy Code or any successor or similar provision (collectively the "Code");
(v)  file  a  petition  seeking  to  take  advantage  of  any  other  law of any
jurisdiction relating to bankruptcy,  insolvency, or composition or readjustment
of  debts;  (vi) fail to  controvert  in a timely  and  appropriate  manner,  or
acquiesce  in  writing  to,  any  petition  filed  against  the  Borrower  in an
involuntary  case under the Code;  or (vii)  take any action for the  purpose of
effecting any of the foregoing;

               (d)  a  proceeding  or  case  shall  be  commenced,  without  the
application or consent of the Borrower, in any court of competent  jurisdiction,
seeking (i) the  liquidation of the  Borrower's  assets,  or the  composition or
readjustment  of the  Borrower's  debts,  (ii)  the  appointment  of a  trustee,
receiver,  custodian,  liquidator  or the  like of any  substantial  part of the
Borrower's  assets, or (iii) similar relief in respect of the Borrower under any
law of any jurisdiction relating to bankruptcy,  insolvency,  or the composition
or  readjustment  of  debts,   and  such  proceedings  or  case  shall  continue
undismissed,  or an order,  judgment or decree  approving or ordering any of the
foregoing  shall be entered and continue  unstayed and in effect for a period of
sixty (60) days; or an order for relief against the Borrower shall be entered in
an involuntary case under any bankruptcy, insolvency, composition,  readjustment
of debt, liquidation of assets or similar law of any jurisdiction; or

               (e) The Borrower has failed to make arrangements  satisfactory to
the  Company  under  Section  11(e) of the Plan with  respect to any  applicable
federal,  state or local tax  withholding  requirements  and such failure  shall
continue  for 15 days after  notice of such  failure has been  delivered  to the
Borrower by the Company.

               If an Event of  Default  specified  in clause  (c) or (d) of this
Section 5 shall exist, this Purchase Note shall automatically become immediately
due and payable  together with interest accrued  thereon,  without  presentment,
demand, protest or notice of any kind, all of which are hereby expressly waived.

               If an Event of Default  other than those  specified in clause (c)
or (d) of this  Section 5 shall  exist,  the  holder of this  Purchase  Note may
exercise any right,  power or remedy permitted to such holder by applicable law,
and shall have, in particular, without limiting the generality of the foregoing,
the right to declare  the entire  principal  of, and  interest  accrued on, this
Purchase Note then  outstanding  to be, and this  Purchase Note shall  thereupon
become, forthwith due and payable, without any presentment,  demand, protest, or
other  notice of any kind,  all of which are hereby  expressly  waived,  and the
Borrower  shall  forthwith  pay to the holder of this  Purchase  Note the entire
principal of, and interest accrued on, this Purchase Note.

               6.  Notice.  For the  purposes of this  Purchase  Note,  notices,
demands and all other communications provided for herein shall be in writing and
shall be deemed to have been duly given  when  delivered  or  (unless  otherwise
specified)  mailed by United States certified or registered mail, return receipt
requested,  postage  prepaid,  addressed,  if to the  Borrower,  to the  address
inserted below the Borrower's signature on the final page hereof, and, if to the
Company, as follows:

               To the Company:

                      Union Pacific Corporation
                      1416 Dodge Street
                      Omaha, NE  68179
                      Attention:  Senior Vice President - Human Resources

or to such  other  address  as any party  may have  furnished  to the  others in
writing in accordance  herewith,  except that notices of change of address shall
be effective only upon receipt.

               7.  Expenses.  Borrower  agrees to pay any and all  out-of-pocket
costs and expenses, including without limitation, reasonable attorney's fees and
disbursements, incurred by the Company in connection with the enforcement of any
and all  provisions  of this Purchase Note and in regard to any defenses to this
Purchase  Note or  counterclaims  brought in the action to enforce this Purchase
Note.

               8.  Miscellaneous.  (a) Failure or  Indulgence  Not a Waiver.  No
delay or failure  by the  Company  or the  holder of this  Purchase  Note in the
exercise of any right or remedy shall constitute a waiver thereof, and no single
or partial  exercise by the holder hereof of any right or remedy shall  preclude
other or future exercise thereof or the exercise of any other right or remedy.

               (b)  Assignment.  This  Purchase Note may be assigned only by the
Company and the benefits and  obligations  thereof  shall inure to the Company's
successors and assigns.

               (c) Invalid Provisions. If any provision of this Purchase Note is
held to be  illegal,  invalid or  unenforceable  under  present  or future  laws
effective  during the term hereof,  such provision  shall be fully severable and
this Purchase  Note shall be construed and enforced as if such illegal,  invalid
or  unenforceable  provision had never comprised a part hereof and the remaining
provisions  hereof  shall  remain  in full  force  and  effect  and shall not be
affected by the illegal,  invalid or  unenforceable  provision by its  severance
herefrom.  Any  provision  of this  Purchase  Note that is  inapplicable  to the
Borrower as a result of the fact that the  Borrower's  position with the Company
is in a non-production capacity shall not affect the balance of the Note.

               (d)  Headings.  The headings  contained in this Purchase Note are
for  reference  purposes  only and shall not  affect in any way the  meaning  or
interpretation of the provisions hereof.

               (e) Not an  Employment  Contract.  Nothing in this  Purchase Note
shall confer upon the Borrower  the right to continue in the  employment  of the
Company or any of its  affiliates  or affect any rights which the Company or any
Company affiliate may have to terminate the employment of the Borrower.

               (f) Governing  Law. The provisions of this Purchase Note shall be
governed by and construed in accordance with laws of the State of Utah,  without
giving effect to the choice of law principles thereof.

               (g) No Set-off. Borrower agrees that Borrower shall have no right
of set-off for any amount that may be owed to Borrower by the  Company,  whether
in connection with the Plan or with any unrelated transactions.





               IN WITNESS WHEREOF, this Purchase Note has been duly executed and
delivered to the Company by the Borrower on the date first above written.




                                    Borrower

                                            Address:

                                            --------------------------------

                                            --------------------------------

                                            --------------------------------

                            (Please print carefully)

Witness: