1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 22, 1999
    
                                                     REGISTRATION NO. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                            ------------------------
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933

                            ------------------------
 
                               FLUOR CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 

                                              
                    DELAWARE                                        95-0740960
(STATE OR OTHER JURISDICTION OF INCORPORATION OR       (I.R.S. EMPLOYER IDENTIFICATION NO.)
                 ORGANIZATION)

 
                              3353 MICHELSON DRIVE
                            IRVINE, CALIFORNIA 92698
                                 (949) 975-2000
    (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                  OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                            LAWRENCE N. FISHER, ESQ.
                   SENIOR VICE PRESIDENT -- LAW AND SECRETARY
                               FLUOR CORPORATION
                              3353 MICHELSON DRIVE
                            IRVINE, CALIFORNIA 92698
                                 (949) 975-2000
      (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING
                        AREA CODE, OF AGENT FOR SERVICE)
 
                                    COPY TO:
 
                            E. MICHAEL GREANEY, ESQ.
                          GIBSON, DUNN & CRUTCHER LLP
                                200 PARK AVENUE
                            NEW YORK, NEW YORK 10166
 
   
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC: From time to
time after the effective date of this Registration Statement, as determined by
the Registrant in light of market conditions.
    
 
    If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]
 
    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box.  [X]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [ ]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
 
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
 
                        CALCULATION OF REGISTRATION FEE
 

=========================================================================================================================
                                                                                          
     TITLE OF EACH CLASS OF                                PROPOSED MAXIMUM       PROPOSED MAXIMUM
            SECURITIES                AMOUNT TO BE        OFFERING PRICE PER     AGGREGATE OFFERING        AMOUNT OF
        TO BE REGISTERED               REGISTERED              UNIT(1)                PRICE(1)         REGISTRATION FEE
- -------------------------------------------------------------------------------------------------------------------------
Debt Securities.................    $500,000,000(2)              100%               $500,000,000           $139,000
=========================================================================================================================

 
(1) Estimated solely for the purpose of calculating the registration fee.
    Excludes accrued interest and accrued amortization of discount, if any, to
    the date of delivery.
 
(2) Plus an additional principal amount of Debt Securities issued with original
    issue discount such that the aggregate initial public offering price of all
    Debt Securities will not exceed $500,000,000.
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.

================================================================================
   2
 
The information in this prospectus is not complete and may be changed. We may
not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.
 
   
                 SUBJECT TO COMPLETION, DATED JANUARY 22, 1999
    
 
PROSPECTUS
 
   
                                  $500,000,000
    
 
                               FLUOR CORPORATION
 
                                Debt Securities
 
                           -------------------------
 
     We will provide specific terms of these debt securities in supplements to
this prospectus. The prospectus supplements may also add, update or change
information contained or incorporated by reference in this prospectus. You
should read this prospectus and any supplement carefully before you invest.
 
                           -------------------------
 
     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON OR
DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.
 
                           -------------------------
 
               The date of this prospectus is              , 1999
   3
 
     YOU SHOULD RELY ONLY ON THE INFORMATION INCORPORATED BY REFERENCE OR
PROVIDED IN THIS PROSPECTUS OR ANY PROSPECTUS SUPPLEMENT. WE HAVE NOT AUTHORIZED
ANYONE ELSE TO PROVIDE YOU WITH DIFFERENT INFORMATION. WE ARE NOT MAKING AN
OFFER OF THESE SECURITIES IN ANY STATE WHERE THE OFFER IS NOT PERMITTED. YOU
SHOULD NOT ASSUME THAT THE INFORMATION IN THIS PROSPECTUS OR ANY PROSPECTUS
SUPPLEMENT IS ACCURATE AS OF ANY DATE OTHER THAN THE DATE ON THE FRONT OF THOSE
DOCUMENTS.
 
                               TABLE OF CONTENTS
 


                                                              PAGE
                                                              ----
                                                           
About this Prospectus.......................................    2
Where You Can Find More Information.........................    3
Disclosure Regarding Forward-Looking Statements.............    3
The Company.................................................    4
Use of Proceeds.............................................    4
Ratio of Earnings to Fixed Charges..........................    4
Description of the Debt Securities..........................    4
Plan of Distribution........................................   14
Legal Matters...............................................   15
Experts.....................................................   15
Glossary....................................................   16

 
                             ABOUT THIS PROSPECTUS
 
   
     In this prospectus, all references to "we," "our," and "us" refer to Fluor
Corporation, a Delaware corporation, and its subsidiaries, unless otherwise
stated or the context otherwise requires.
    
 
   
     This prospectus is part of a registration statement that we filed with the
Securities and Exchange Commission utilizing a "shelf" registration process.
Under this shelf process, we may sell any combination of the debt securities
described in this prospectus in one or more offerings up to a total dollar
amount of $500,000,000. This prospectus provides you with a general description
of the debt securities we may offer. Each time we sell debt securities, we will
provide a prospectus supplement that will contain specific information about the
terms of that offering. The prospectus supplement may also add, update or change
information contained in this prospectus. You should read both this prospectus
and any prospectus supplement together with additional information described
under the caption "Where You Can Find More Information" below.
    
 
                                        2
   4
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     We file annual, quarterly and periodic special reports, proxy statements
and other information with the SEC. You may read and copy any document we file
at the SEC's public reference rooms in Washington, D.C., New York, New York and
Chicago, Illinois. Please call the SEC at 1-800-732-0330 for further information
on the public reference rooms. Our SEC filings are also available to the public
over the Internet at the SEC's web site at http://www.sec.gov. You may also read
copies of these documents at the offices of the New York Stock Exchange, the
Chicago Stock Exchange and the Pacific Stock Exchange.
 
   
     The SEC allows us to "incorporate by reference" the information contained
in documents that we file with them, which means that we can disclose important
information to you by referring you to those documents. The information
incorporated by reference is an important part of this prospectus and any
prospectus supplement, and information that we file later with the SEC will
automatically update and supersede some or all of this information. We
incorporate by reference any future filings we make with the SEC under Sections
13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 until we sell
all of the debt securities, and this document, which we have already filed with
the SEC:
    
 
     - Annual Report on Form 10-K for the year ended October 31, 1998.
 
     You may request a copy of these filings, at no cost, by writing or
telephoning us at our principal executive offices at the following address:
 
                               Fluor Corporation
                              3353 Michelson Drive
                            Irvine, California 92698
                         Attention: Corporate Secretary
                                (949) 975-2000.
 
     We have filed or incorporated by reference exhibits with the registration
statement that include the form of proposed underwriting agreement and
indenture. You should read the exhibits carefully for provisions that may be
important to you.
 
                DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS
 
   
     This prospectus includes forward-looking statements. Although we believe
that our plans, intentions and expectations reflected in or suggested by such
forward-looking statements are reasonable, we can give no assurance that such
plans, intentions or expectations will be achieved. These forward-looking
statements are subject to risks, uncertainties and assumptions about us,
including those discussed elsewhere in the documents that are incorporated by
reference into this prospectus, and the following, any of which could affect our
future results of operations and financial condition and could cause actual
results to differ materially from those expressed in our forward-looking
statements:
    
 
     - the effect of economic, credit and capital market conditions;
 
     - the impact of competition;
 
     - changes in customer demand; and
 
     - changes in the laws or regulations affecting our businesses.
 
                                        3
   5
 
                                  THE COMPANY
 
     Fluor Corporation was incorporated in Delaware in 1978 as a successor in
interest to a California corporation of the same name that was originally
incorporated in 1924.
 
   
     Fluor Corporation operates primarily through Fluor Daniel, Inc., one of the
world's largest engineering, construction and diversified services companies,
and A.T. Massey Coal Company, Inc., which is a major producer of low-sulfur
coal.
    
 
     Fluor Daniel and other domestic and foreign subsidiaries provide design,
engineering, procurement, construction, maintenance and other diversified
services on a worldwide basis to an extensive range of industrial, commercial,
utility, natural resources, energy and governmental clients.
 
   
     Fluor Daniel's Diversified Services Group provides a variety of services
globally. The companies in this group include Maintenance Services Company;
Technology Services Company; American Equipment Company, which sells, rents,
services and outsources equipment for construction and industrial needs; and TRS
Staffing Services, which provides temporary and permanent placement services
specializing in technical, professional and administrative personnel.
    
 
   
     A.T. Massey Coal Company mines, processes and sells bituminous, low-sulfur
coal of steam and metallurgical grades from 20 mining complexes located in West
Virginia, Kentucky, Virginia and Tennessee.
    
 
     Our principal executive offices are located at the following address: 3353
Michelson Drive, Irvine, California 92698.
 
                                USE OF PROCEEDS
 
     Except as otherwise specified in a prospectus supplement, we will use the
net proceeds from the sale of the debt securities for general corporate purposes
including working capital, capital expenditures, stock purchase programs,
repayment and refinancing of debt and acquisitions. We may invest funds not
required immediately for such purposes in marketable securities and short-term
investments.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
     Our ratio of earnings to fixed charges for each of the years ended is as
follows:
 


      YEAR ENDED OCTOBER 31,
- ----------------------------------
1994   1995    1996    1997   1998
- ----   -----   -----   ----   ----
                  
9.06   11.17   10.76   5.13   5.63

 
   
     For purposes of computing the ratio of earnings to fixed charges,
"earnings" consist of earnings from continuing operations before provision for
income taxes plus fixed charges less undistributed earnings from less than 50%
owned persons. "Fixed charges" consist of interest and debt expense, capitalized
interest and one-third of rental expense, which we believe is a reasonable
approximation of the interest factor of such rental expense.
    
 
                                        4
   6
 
                       DESCRIPTION OF THE DEBT SECURITIES
 
   
     The debt securities covered by this prospectus will be our direct unsecured
obligations. The debt securities will be issued in one or more series under an
indenture, dated February 18, 1997, between us and Bankers Trust Company as
trustee.
    
 
     This prospectus briefly outlines some of the indenture provisions. The
indenture has been incorporated by reference into the registration statement.
You should read the indenture for provisions that may be important to you. In
the summary below, we have included references to section numbers of the
indenture so that you can easily locate these provisions. We have also provided
a glossary at the end of this prospectus to define the capitalized words used in
discussing the debt securities.
 
GENERAL
 
   
     The debt securities will rank equally with all of our other unsecured and
unsubordinated debt. The indenture does not limit the amount of debt we may
issue under the indenture or otherwise. We may issue the debt securities in one
or more series with the same or various maturities, at par or a premium, or with
Original Issue Discount.
    
 
     The debt securities may be issuable in the form of one or more global
securities, as further described under the caption "Global Securities" below.
Except for any debt securities issued in the form of a global security, the debt
securities are exchangeable or transferable without charge. We may, however,
require you to pay us for any tax or other governmental charge payable in
connection with the transfer and exchange and may also require you to furnish
appropriate endorsements and transfer documents. (Section 3.05)
 
     Unless otherwise specified in a prospectus supplement, any principal,
premium or interest payment will be payable, and the transfer of debt securities
will be registrable, at the principal corporate trust office of the Trustee. In
addition, unless otherwise specified in a prospectus supplement and except in
the case of any debt securities issued in the form of a global security, we may
opt to make interest payments by check, mailed to the address of the person
entitled to receive the interest payment as reflected on the security register.
(Sections 3.01, 3.05, 10.01 and 10.02)
 
     The prospectus supplement relating to any series of debt securities being
offered will include specific terms relating to the offering. These terms will
include some or all of the following:
 
          (1) The title of the debt securities;
 
          (2) The aggregate principal amount of the debt securities;
 
          (3) The person to whom any interest on the debt securities will be
     payable, if other than the person in whose name it is registered on the
     regular record date for such interest;
 
          (4) The date or dates on which the principal of the debt securities
     will be payable or the method for determining such date or dates and any
     rights of extension;
 
          (5) The interest rate or rates at which the debt securities will bear
     interest, if any, and the date or dates from which such interest will
     accrue, the interest payment dates for the debt securities and the regular
     record dates for any interest payable on any interest payment date;
 
                                        5
   7
 
          (6) The place or places where the principal of and any interest on the
     debt securities are payable;
 
          (7) The terms and conditions of any optional or mandatory redemption
     provisions;
 
          (8) The terms and conditions of any sinking fund or other analogous
     provision that would obligate us to redeem or repurchase the debt
     securities, in whole or in part, and any remarketing provisions for the
     debt securities;
 
          (9) The denominations in which the debt securities will be issuable,
     if other than denominations of $1,000 or any integral multiple thereof;
 
   
          (10) Any index or formula by which the amount of the principal, any
     premium or interest payments on the debt securities will be determined and
     the identity of any calculation agent;
    
 
   
          (11) The currency in which the principal, any premium or interest
     payments on the debt securities will be paid, if other than United States
     dollars;
    
 
          (12) The amount of principal payable upon acceleration of the debt
     securities following an Event of Default, if other than the entire
     principal amount;
 
          (13) Any amount which will be deemed to be the principal amount of the
     debt securities as of a particular Maturity or the manner in which the
     principal amount is to be determined, if the principal amount payable at
     the Maturity will not be determinable prior to the Maturity;
 
          (14) Any changes to the defeasibility of the debt securities;
 
          (15) Whether the debt securities are to be issued in whole or in part
     in the form of one or more global securities held by a depositary on behalf
     of holders or in the form of individual certificates to be held by each
     holder and the circumstances under which any global security may be
     exchanged for debt securities;
 
          (16) Any additions to or changes in the Events of Default which apply
     to the debt securities and any changes in the right of the Trustee or the
     holders of the debt securities to accelerate the maturity of the debt
     securities;
 
          (17) Any changes to the definition of "Business Day" with respect to
     the debt securities;
 
          (18) Whether the satisfaction of other conditions, in addition to
     those specified in the indenture, are required and the terms of such
     conditions;
 
          (19) Any terms or conditions upon which holders may convert or
     exchange the debt securities into shares of our common stock or other
     securities or property;
 
          (20) Any additions to or changes in the covenants set forth in the
     indenture;
 
          (21) Any other specific terms of the debt securities.
 
(Section 3.01)
 
     The debt securities may be issued with Original Issue Discount, which means
that the debt securities may be sold at a discount below their principal amount.
Even if debt securities are not issued at a discount below their principal
amount, the debt securities may, for United Stated Federal income tax purposes,
be deemed to have been issued with Original Issue Discount because of certain
interest payment characteristics. United States
 
                                        6
   8
 
Federal income tax and other considerations applicable to debt securities issued
with Original Issue Discount will be described in the prospectus supplement
relating to those debt securities. In addition, United States Federal tax
considerations or other terms or restrictions applicable to debt securities
which are denominated in a currency other than United States dollars will be
described in the prospectus supplement relating to those debt securities.
 
CONSOLIDATION, MERGER OR SALE
 
     We have agreed not to consolidate with or merge with or into any other
entity or convey, transfer or lease substantially all of our properties and
assets to any person, unless,
 
   
          (1) either (a) we are the continuing corporation or (b) any successor
     or purchaser (i) is a corporation, partnership or trust organized and
     validly existing under the laws of the United States or any State thereof
     or the District of Columbia and (ii) expressly assumes, by a supplemental
     indenture, all of our obligations with respect to the debt securities and
     the indenture;
    
 
          (2) immediately after such transaction, no Event of Default exists;
 
   
          (3) if, as a result of any such transaction, our properties or assets
     would become subject to a Lien which would not be permitted by the
     indenture, or if we or our successor, as applicable, secures the debt
     securities equally and ratably with debt secured by such Lien; and
    
 
          (4) certain other conditions are met.
 
(Section 8.01)
 
     The successor entity would succeed to and would be able to exercise every
right and power that we possess under the indenture. Except in the case of a
lease of substantially all of our properties and assets, we will thereafter be
relieved of all obligations and covenants under the indenture and the debt
securities. (Section 8.02)
 
MODIFICATION OF INDENTURE
 
     There are three categories of changes that we can make to the indenture and
the debt securities. First, there are changes that cannot be made to the debt
securities without the approval of each holder of debt securities affected by
such change. Second, there are changes that can be made with the approval of
holders of debt securities owning a majority in aggregate principal amount of
the outstanding debt securities of all series affected by the change (voting as
one class). All other changes may be made by us without the consent or vote of
holders of the debt securities.
 
     The following is a summary of the changes that cannot be made without the
approval of each holder of debt securities affected by such change:
 
          (1) changes to the time for paying principal or interest on any debt
     security;
 
          (2) reductions in the amount of principal of or interest on any debt
     security;
 
          (3) reductions in the amount of premium payable upon the redemption of
     a debt security;
 
          (4) reductions in the amount of principal of a debt security issued
     with Original Issue Discount or any other debt security that would be due
     and payable upon acceleration of Maturity;
 
                                        7
   9
 
          (5) changes to the place where, or the currency in which, any debt
     security is payable;
 
          (6) impairment of the right to sue for the payment of any debt
     security;
 
          (7) reductions in the percentage of aggregate principal amount of debt
     securities of any series, the consent of the holders of which is required
     to modify or amend the indenture; or
 
          (8) modifications to provisions relating to the requirements for
     waiving compliance with certain provisions or certain defaults.
 
(Section 9.02)
 
     Holders of debt securities owning a majority in aggregate principal amount
of the outstanding debt securities of all series affected by a change (voting as
one class) may, on behalf of the holders of all debt securities of such series,
waive:
 
          (1) compliance by us with certain provisions of the indenture;
     (Section 10.09)
 
          (2) any past default under the indenture with respect to debt
     securities of such series, except a default (a) in the payment of principal
     of, or any premium or interest on, any debt security of such series, or (b)
     in respect of a covenant or provision of the indenture which cannot be
     modified without the consent of each holder of debt securities of a series
     affected by the modification. (Section 5.13)
 
   
     In determining whether the holders of the requisite aggregate principal
amount of the outstanding debt securities have given, made or taken any request,
demand, authorization, direction, notice, consent, waiver or other action
thereunder as of any date, (a) the principal amount of a debt security issued
with Original Issue Discount which will be deemed to be outstanding will be the
amount of the principal which would be due and payable as of that date, (b) if,
as of that date, the principal amount payable at the stated Maturity of a debt
security is not determinable, the principal amount of the debt security which
will be deemed to be outstanding will be the amount established in the
applicable supplemental indenture, (c) the principal amount of a debt security
denominated in one or more foreign currencies or currency units which will be
deemed to be outstanding will be the U.S. dollar equivalent, determined as of
that date in the manner as described in clause (b) above, of the principal
amount of the debt security, (or, in the case of a debt security described in
clause (a) or (b) above, of the amount determined as provided in such clause),
and (d) debt securities owned by us, any of our affiliates or any other obligor
will be disregarded and deemed not to be outstanding, except that, in
determining whether the Trustee will be protected in relying upon any such
request, demand, authorization, direction, notice, consent, waiver or other
action, only debt securities which the Trustee knows to be so owned will be so
disregarded. Debt securities so owned which have been pledged in good faith may
be regarded as outstanding if the pledgee establishes to the satisfaction of the
Trustee the pledgee's right to so act with respect to the debt securities and
that the pledgee is not us, an affiliate of ours or any other obligor. (Section
1.02)
    
 
EVENTS OF DEFAULT
 
     The following will be "Events of Default" under the indenture with respect
to the debt securities of any series, unless otherwise specified in a prospectus
supplement:
 
          (1) failure to pay any interest when due and payable, and such failure
     continues for 30 days;
 
                                        8
   10
 
   
          (2) failure to pay principal or any premium at Maturity;
    
 
          (3) failure to deposit any sinking fund payment, when and as due, and
     such failure continues for 30 days;
 
   
          (4) failure to perform any other of our covenants under the indenture
     (other than a covenant that is more specifically dealt with or a covenant
     included solely for the benefit of debt securities other than that series),
     and such failure continues for 90 days after written notice as provided
     under the indenture;
    
 
          (5) certain events in bankruptcy, insolvency or reorganization
     involving us;
 
          (6) any other Event of Default provided with respect to debt
     securities of that series.
 
(Section 5.01)
 
   
     If an Event of Default exists with respect to any series of debt
securities, then either the Trustee or the holders of at least 25% in aggregate
principal amount of the debt securities of such series may declare the entire
principal amount of all the debt securities of that series immediately due and
payable. If the Event of Default involves certain events in bankruptcy,
insolvency or reorganization (as described in clause (5) in the paragraph
above), then the principal amount of all the debt securities of that series will
automatically, and without any declaration or other action on the part of the
Trustee or any holder, become immediately due and payable. If any debt
securities of a series are issued with Original Issue Discount, the amount of
the debt securities that will become immediately due and payable in an Event of
Default will be the portion of the principal amount specified by the terms of
the debt securities. At any time after the Trustee or the holders have declared
an acceleration of a series of debt securities, but before a judgment or decree
for payment of money has been obtained by the Trustee, the holders of a majority
in aggregate principal amount of the debt securities of that series may, under
certain circumstances, rescind and annul such acceleration. (Section 5.02)
    
 
     Subject to the provisions of the Trust Indenture Act, the indenture
provides that the Trustee will be under no obligation to exercise any of its
rights or powers under the indenture at the request or direction of any of the
holders, unless such holders have offered to the Trustee reasonable indemnity.
(Sections 6.01 and 6.03) Subject to such provisions for the indemnification of
the Trustee, the holders of a majority in aggregate principal amount of the debt
securities of any series will have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, with
respect to the debt securities of that series. (Section 5.12)
 
     We are required to furnish to the Trustee an annual statement by certain
officers as to our performance with respect to certain of our obligations under
the indenture and as to any default in such performance. (Section 10.04)
 
   
     The right of any holder to receive principal, any premium and interest
payments on the debt securities or to institute suit for the enforcement of such
payment cannot be impaired without that holder's consent. (Section 5.08)
    
 
CERTAIN RESTRICTIVE COVENANTS
 
   
     We have agreed to certain restrictions on our activities for the benefit of
holders of the debt securities. The restrictive covenants summarized below will
apply (unless waived or amended) so long as any of the debt securities are
outstanding, unless otherwise specified in a prospectus supplement.
    
 
                                        9
   11
 
     Restrictions on Liens. We have agreed that neither we nor any Restricted
Subsidiary will incur, issue, assume or guarantee debt secured by any Lien upon
any Principal Property without securing the debt securities equally and ratably
with all other indebtedness secured by such Lien. This covenant has certain
exceptions, which permit:
 
          (1) Liens existing on the date of the indenture;
 
          (2) Liens existing on Principal Property owned or leased by a
     corporation at the time it becomes a Restricted Subsidiary;
 
          (3) Liens existing on Principal Property at the time of its
     acquisition by us or a Restricted Subsidiary;
 
          (4) Liens to secure any debt incurred prior to, at the time of, or
     within 12 months after the acquisition of any Principal Property for the
     purpose of financing all or any part of the purchase price thereof and any
     Lien to the extent that it secures debt which is in excess of such purchase
     price and for the payment of which recourse may be had only against such
     Principal Property;
 
          (5) Liens to secure any debt incurred prior to, at the time of, or
     within 12 months after the completion of the construction and commencement
     of commercial operation, alteration, repair or improvement of Principal
     Property for the purpose of financing all or any part of the cost thereof
     and any Lien to the extent that it secures debt which is in excess of such
     cost and for the payment of which recourse may be had only against such
     Principal Property;
 
          (6) Liens in favor of us or any of our affiliates;
 
          (7) Liens in favor of the United States of America or any State
     thereof or any other country, or any agency, instrumentality or political
     subdivision of any of the foregoing, to secure partial, progress, advance
     or other payments or performance pursuant to the provisions of any contract
     or statute, or to secure any indebtedness incurred for the purpose of
     financing all or any part of the purchase price or the cost of constructing
     or improving the property subject to such Liens;
 
          (8) Liens imposed by law, such as mechanics', workmen's, repairmen's,
     materialmen's, carriers', warehousemen's, vendors' or other similar Liens
     arising in the ordinary course of business, or governmental (federal, state
     or municipal) Liens arising out of contracts for the sale of products or
     services by us or any Restricted Subsidiary, or deposits or pledges to
     obtain the release of any of the foregoing;
 
          (9) certain pledges or deposits under workmen's compensation or
     similar legislation or in certain other circumstances;
 
          (10) certain Liens in connection with legal proceedings, including
     certain Liens arising out of judgments or awards;
 
          (11) Liens for certain taxes or assessments;
 
          (12) certain Liens consisting of restrictions on the use of real
     property which do not interfere materially with the property's value;
 
          (13) Liens securing obligations issued by certain government agencies
     or instrumentalities to finance the acquisition or construction of
     property, and on which the interest is not includible in gross income of
     the holder;
 
                                       10
   12
 
          (14) Liens on or with respect to coal, gas, hydrocarbon or mineral
     properties not fully developed securing debt, the proceeds of which are
     used to finance or refinance the development of such properties;
 
          (15) Liens on or with respect to mineral rights held under option but
     not owned by us or any Restricted Subsidiary;
 
          (16) Liens on or with respect to ores, concentrates, metals or other
     raw materials or products incurred in the ordinary course of business in
     connection with the importation, purchase or sale thereof; and
 
          (17) any extension, renewal or replacement, in whole or in part, of
     any Lien referred to in the foregoing clauses (2) through (16) above, so
     long as the principal amount of the debt secured thereby does not exceed
     the principal amount of debt so secured at the time of the extension,
     renewal or replacement (except that, where an additional principal amount
     of debt is incurred to provide funds for the completion of a specific
     project, the additional principal amount, and any related financing costs,
     may be secured by the Lien as well) and the Lien is limited to the same
     property subject to the Lien so extended, renewed or replaced (plus
     improvements on the property).
 
(Section 10.07)
 
     Notwithstanding the foregoing, we and any one or more of our Restricted
Subsidiaries may issue, assume or guarantee debt secured by a Lien which would
otherwise be subject to the foregoing restrictions if at the time it does so
(the "Incurrence Time"), the amount equal to the sum of:
 
     - the aggregate amount of such debt, plus
 
     - all of our other debt and the debt of our Restricted Subsidiaries secured
       by a Lien which would otherwise be subject to the foregoing restrictions
       (not including debt permitted to be secured under the foregoing
       restrictions), plus
 
     - the aggregate Attributable Debt (determined as of the Incurrence Time) of
       Sale and Leaseback Transactions (other than Sale and Leaseback
       Transactions permitted by the indenture) entered into after the date of
       the indenture and in existence at the Incurrence Time (less the aggregate
       amount of proceeds of such Sale and Leaseback Transactions which have
       been applied in accordance with the terms of the indenture),
 
does not exceed 15% of our Consolidated Net Tangible Assets. (Section 10.07)
 
   
     Restrictions on Sale and Leaseback Transactions. We have agreed not to, and
will not permit any Restricted Subsidiary to, enter into any Sale and Leaseback
Transaction involving any Principal Property unless:
    
 
   
          (1) we or the Restricted Subsidiary would, at the time of entering
     into such arrangement, be entitled, without equally and ratably securing
     the debt securities of each series then outstanding, to incur, issue,
     assume or guarantee debt secured by a Lien on such property, pursuant to
     the provisions described in clauses (1) to (16) inclusive under the caption
     "Restrictions on Liens" above; or
    
 
          (2) we, within 180 days after the sale or transfer, apply to the
     retirement of our Funded Debt (subject to credits for certain voluntary
     retirements of Funded Debt) an amount equal to the greater of (a) the net
     proceeds of the sale of the Principal Property sold and leased back
     pursuant to such arrangement or (b) the fair market
 
                                       11
   13
 
     value of the Principal Property so sold and leased back. This restriction
     will not apply to a Sale and Leaseback Transaction between us and an
     affiliate or between a Restricted Subsidiary and an affiliate or involving
     the taking back of a lease for a period of less than three years.
 
(Section 10.08)
 
     Notwithstanding the foregoing, we and our Restricted Subsidiaries, or any
of us, may enter into a Sale and Leaseback Transaction that would otherwise be
prohibited as set forth above, if, at the time of and giving effect to such
transaction, the amount equal to the sum of:
 
     - the aggregate amount of the Attributable Debt in respect of all Sale and
       Leaseback Transactions existing at such time which could not have been
       entered into except in reliance on this paragraph, plus
 
     - the aggregate amount of outstanding debt secured by Liens in reliance on
       the second paragraph under the caption "Restrictions on Liens" above,
 
does not at such time exceed 15% of our Consolidated Net Tangible Assets.
(Section 10.08)
 
CONVERSION RIGHTS
 
   
     We may issue debt securities that are convertible into our common stock or
other securities or property. The specific terms on which the debt securities
are convertible will be described in an applicable prospectus supplement. The
terms will include provisions as to whether conversion is mandatory or optional
and may include provisions that establish the amount of securities or property
that you will receive according to a formula based upon the market price of the
securities or property at a particular time.
    
 
GLOBAL SECURITIES
 
   
     We may issue some or all of the debt securities of a series in the form of
one or more global securities. Global securities will be deposited with a
depository identified in the applicable prospectus supplement. A global security
is a security, typically held by a depository, that represents the beneficial
interests of a number of purchasers of such security. The specific terms of the
depositary arrangement with respect to a series of debt securities will be
described in an applicable prospectus supplement.
    
 
DEFEASANCE
 
   
     The following provisions relating to defeasance and discharge of
indebtedness, or relating to defeasance of certain covenants in the indenture,
will apply to the debt securities of any series, or to any specified part of a
series, unless otherwise specified in a prospectus supplement. (Section 13.01)
    
 
     Defeasance and Discharge. We may discharge all of our obligations with
respect to certain debt securities (except for certain obligations to exchange
or register the transfer of debt securities, to replace stolen, lost or
mutilated debt securities, to maintain paying agencies and to hold moneys for
payment in trust) by depositing in trust, for the benefit of the holders of such
debt securities, money or U.S. Government Obligations, or both, which will
provide a sufficient amount of money to pay any installment of principal,
premium or interest payment and any mandatory sinking fund payment required by
the debt securities on the designated payment dates. We may defease and
discharge our obligations only if,
 
                                       12
   14
 
among other things, there has been a United States Internal Revenue Service
ruling, or there has been a change in tax law, to the effect that holders of
debt securities will be subject to federal income tax on the same amount, in the
same manner and at the same times as would have been the case if such deposit,
defeasance and discharge were not to occur. (Sections 13.02 and 13.04)
 
     Defeasance of Certain Covenants. Under certain circumstances, we may not be
required to comply with certain restrictive covenants described under the
captions "Restrictions on Liens" and "Restrictions on Sale and Leaseback
Transactions" above, including any that may be described in an applicable
prospectus supplement. In addition, under certain circumstances, the occurrence
of certain Events of Default, including any that may be described in an
applicable prospectus supplement, will be deemed not to be or result in an Event
of Default. In order for this to occur, we must deposit in trust, for the
benefit of the holders of debt securities, money or U.S. Government Obligations,
or both, which will provide a sufficient amount of money to pay any installment
of principal, premium or interest payment and any mandatory sinking fund payment
required by the debt securities on the designated payment dates. There must also
have been, among other things, a United States Internal Revenue Service ruling,
or a change in tax law, to the effect that holders of debt securities will be
subject to federal income tax on the same amount, in the same manner and at the
same times as would have been the case if such deposit, defeasance and discharge
were not to occur.
 
     In the event we exercised this option with respect to any debt securities
and the debt securities were accelerated and declared due and payable as a
result of an Event of Default, the amount of money and U.S. Government
Obligations deposited in trust may not be sufficient to pay amounts due on the
debt securities at the time of the acceleration. In that case, we would remain
liable for any amounts still due. (Sections 13.03 and 13.04)
 
CONCERNING THE TRUSTEE
 
     Bankers Trust Company of California, N.A., an affiliate of the Trustee, is
master trustee and custodian for the Fluor Corporation Master Retirement Trust,
the Fluor Employee Benefit Trust, the Fluor Corporation Executive Deferred
Compensation Program Trust and the Fluor Executives' Supplemental Benefit Trust.
In addition, we maintain with the Trustee one inactive corporate demand deposit
account.
 
   
     Upon the occurrence of an Event of Default or an event which, after notice
or lapse of time or both, would become an Event or Default, the Trustee may be
deemed to have a conflicting interest with respect to the debt securities for
purposes of the Trust Indenture Act and, unless the Trustee is able to eliminate
any such conflicting interest, the Trustee may be required to resign as Trustee
under the indenture. In that event, we would be required to appoint a successor
Trustee for the indenture.
    
 
GOVERNING LAW
 
     The debt securities and the indenture will be governed by, and construed in
accordance with, the laws of the State of New York.
 
                              PLAN OF DISTRIBUTION
 
     We may sell debt securities from time to time in one or more transactions.
We may sell debt securities (a) through underwriters or dealers; (b) through
agents; or (c) directly to one or more purchasers.
 
                                       13
   15
 
SALE THROUGH UNDERWRITERS
 
     If we use underwriters in the sale, the underwriters will acquire the debt
securities for their own account. The underwriters may resell the debt
securities in one or more transactions, including negotiated transactions, at a
fixed public offering price or at varying prices determined at the time of sale.
The obligations of the underwriters to purchase the debt securities will be
subject to certain conditions. The underwriters will be obligated to purchase
all the debt securities of a series offered by a prospectus supplement if any of
such debt securities are purchased. The underwriters may sell debt securities to
or through dealers, and such dealers may receive compensation in the form of
discounts, concessions or commissions from the underwriters. The underwriters
may change from time to time any initial public offering price and any
discounts, concessions or commissions allowed or re-allowed or paid to dealers.
 
SALE THROUGH AGENTS
 
     We may sell debt securities through agents designated by us. Unless
indicated in the prospectus supplement, the agents have agreed to use their
reasonable best efforts to solicit purchases for the period of their
appointment.
 
DIRECT SALES
 
     We also may sell debt securities directly to purchasers without the
involvement of underwriters or agents.
 
GENERAL INFORMATION
 
     We may authorize agents, underwriters or dealers to solicit offers by
certain institutional investors to purchase debt securities providing for
payment and delivery on a future date specified in the prospectus supplement.
Institutional investors to which such offers may be made, when authorized,
include commercial and savings banks, insurance companies, pension funds,
investment companies, educational and charitable institutions and such other
institutions as may be approved by us. The obligations of any such purchasers
under such delayed delivery and payment arrangements will not be subject to any
conditions except that (1) the purchase by an institution of the debt securities
will not at delivery be prohibited under the laws of any jurisdiction in the
United States to which the institution is subject and (2) if the debt securities
are being sold to underwriters, we will sell to the underwriters the total
principal amount of the debt securities less the principal amount covered by the
delayed delivery and payment arrangement.
 
   
     Underwriters, dealers and agents that participate in the distribution of
the offered securities may be underwriters as defined in the Securities Act of
1933, as amended (the "Securities Act"), and any discounts or commissions
received by them from us and any profit on the resale of the debt securities by
them may be treated as underwriting discounts and commissions under the
Securities Act. We will identify any underwriters or agents, and describe their
compensation, in a prospectus supplement.
    
 
     The debt securities may or may not be listed on a national securities
exchange or a foreign securities exchange. The debt securities will be a new
issue of securities with no established trading market. Any underwriters or
agents to or through whom we sell debt securities for public offering and sale
may make a market in the debt securities. However, the underwriters and agents
will not be obligated to make a market in the debt securities and may
discontinue their market-making activities at any time without notice. We cannot
 
                                       14
   16
 
provide any assurance with respect to the liquidity of the trading market for
any of the debt securities.
 
     We may have agreements with the underwriters, dealers and agents to
indemnify them against certain civil liabilities, including liabilities under
the Securities Act, or to contribute with respect to payments which the
underwriters, dealers or agents may be required to make.
 
     Underwriters, dealers and agents may engage in transactions with, or
perform services for, us or our subsidiaries in the ordinary course of their
businesses.
 
                                 LEGAL MATTERS
 
     Gibson, Dunn & Crutcher LLP, our outside legal counsel, will issue an
opinion about the legality of the debt securities for us. Any underwriters will
be advised about other issues relating to any offering of debt securities by
their own legal counsel.
 
                                    EXPERTS
 
     Ernst & Young LLP, independent auditors, have audited our consolidated
financial statements included in our Annual Report on Form 10-K for the year
ended October 31, 1998, as set forth in their report, which is incorporated in
this prospectus by reference. Our consolidated financial statements are
incorporated by reference in reliance on their report, given on their authority
as experts in accounting and auditing.
 
                                       15
   17
 
                                    GLOSSARY
 
     "Attributable Debt" means, in respect of a Sale and Leaseback Transaction
and as of any particular time, the present value (discounted at the rate of
interest implicit in the terms of the lease involved in such Sale and Leaseback
Transaction, as determined in good faith by us) of the obligation of the lessee
thereunder for net rental payments (excluding, however, any amounts required to
be paid by such lessee, whether or not designated as rent or additional rent, on
account of maintenance and repairs, services, insurance, taxes, assessments,
water rates or similar charges or any amounts required to be paid by such lessee
thereunder contingent upon monetary inflation or the amount of sales,
maintenance and repairs, insurance, taxes, assessments, water rates or similar
charges) during the remaining term of such lease (including any period for which
such lease has been extended or may, at the option of the lessor, be extended).
(Section 1.02)
 
   
     "Consolidated Net Tangible Assets" means the aggregate amount of assets
(less applicable reserves and other properly deductible items) after deducting
therefrom (a) all goodwill, trade names, trademarks, patents, unamortized debt
discount and expense and other like intangibles, and (b) all current
liabilities, as reflected in our latest audited consolidated balance sheet
contained in our most recent annual report to our stockholders under Rule 14a-3
of the Securities Exchange Act of 1934, as amended, prior to the time as of
which "Consolidated Net Tangible Assets" will be determined. (Section 1.02)
    
 
     "Funded Debt" means all indebtedness maturing one year or more from the
date of the creation thereof, all indebtedness directly or indirectly renewable
or extendible, at the option of the debtor, by its terms or by the terms of any
instrument or agreement relating thereto, to a date one year or more from the
date of the creation thereof, and all indebtedness under a revolving credit or
similar agreement obligating the lender or lenders to extend credit over a
period of one year or more. (Section 1.02)
 
     "Lien" means any mortgage, lien, pledge, charge, security interest or other
encumbrance. (Section 1.02)
 
     "Maturity," when used with respect to any debt security, means the date on
which the principal of such debt security or an installment of principal or, in
the case of a debt security issued with Original Issue Discount, the principal
amount payable upon a declaration of acceleration, becomes due and payable as
therein provided, whether at the stated Maturity or by declaration of
acceleration, call for redemption or otherwise. (Section 1.02)
 
     "Original Issue Discount" means, when used with respect to any debt
security, a debt security which provides for an amount less than the principal
amount thereof to be due and payable upon a declaration of acceleration of the
Maturity thereof. (Section 1.02)
 
     "Principal Property" means any single office building, manufacturing or
processing plant, warehouse or other similar facility owned by us or any
Restricted Subsidiary, the book value of the property, plant and equipment of
which (as shown, net of depreciation, on the books of the owner or owners) is
not less than 2% of the Consolidated Net Tangible Assets at the end of our most
recent fiscal year, reflected in the latest audited consolidated statement of
financial position contained in our most recent annual report to our
stockholders, except (a) any such plant or facility (i) owned jointly or in
common with one or more entities other than us and our Restricted Subsidiaries,
in which our interest and that of our Restricted Subsidiaries does not exceed
50%, or (ii) which our board of directors determines by resolution in good faith
is not of material importance to the total business conducted, or assets owned,
by us and our Subsidiaries as an entirety, or
 
                                       16
   18
 
(b) any portion of any such plant or facility which our board of directors
determines by resolution in good faith not to be of material importance to the
use or operation thereof. (Section 1.02)
 
     "Restricted Subsidiary" means any Subsidiary which as of such time meets
the definition of a "significant subsidiary" contained, as of the date of the
indenture, in Regulation S-X of the rules and regulations of the SEC. (Section
1.02)
 
     "Sale and Leaseback Transaction" means any arrangement involving any bank,
insurance company, or other lender or investor (excluding us or any of our
affiliates) that provides for the lease by us or one of our Restricted
Subsidiaries for a total period in excess of three years of any Principal
Property which has been or is to be sold or transferred by us or any Restricted
Subsidiary to such lender or investor or to any person to whom funds have been
or are to be advanced by such lender or investor on the security of such
Principal Property. (Section 10.08)
 
     "Subsidiary" means a corporation of which a majority of the capital stock
having voting power under ordinary circumstances to elect a majority of the
board of directors of such corporation is owned by (i) us, (ii) us and one or
more of our Subsidiaries or (iii) one or more of our Subsidiaries. (Section
1.02)
 
     "U.S. Government Obligation" means (a) any security which is (i) a direct
obligation of the United States of America for the payment of which the full
faith and credit of the United States of America is pledged or (ii) an
obligation of an entity controlled or supervised by and acting as an agency or
instrumentality of the United States of America the payment of which is
unconditionally guaranteed as a full faith and credit obligation by the United
States of America, which, in either case (i) or (ii), is not callable or
redeemable at the option of the issuer thereof, and (b) any depositary receipt
issued by a bank (as defined in Section 3(a)(2) of the Securities Act) as
custodian with respect to any U.S. Government Obligation which is specified in
clause (a) above and held by such bank for the account of the holder of such
depositary receipt, or with respect to any specific payment of principal of or
interest on any U.S. Government Obligation which is so specified and held,
provided that (except as required by law) such custodian is not authorized to
make any deduction from the amount payable to the holder of such depositary
receipt from any amount received by the custodian in respect of the U.S.
Government Obligation or the specific payment of principal or interest evidenced
by such depositary receipt. (Section 13.04)
 
                                       17
   19
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 

                                                           
SEC registration fee........................................  $139,000
Printing fees and expenses..................................    40,000*
Accounting fees and expenses................................    50,000*
Trustee fees................................................     6,000*
Rating agency fees..........................................   200,000*
Legal fees and expenses.....................................   100,000*
Blue Sky fees...............................................    10,000*
Miscellaneous...............................................    15,000*
                                                              --------
                                                              $560,000*
                                                              ========

 
- -------------------------
* Estimated and subject to future contingencies.
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     Our Restated Certificate of Incorporation requires that our directors and
officers be indemnified to the maximum extent permitted by Delaware law.
 
     The General Corporation Law of the State of Delaware provides in general
that a director or officer of a corporation (i) shall be indemnified by the
corporation for all expenses of litigation or other legal proceedings when he is
successful on the merits, (ii) may be indemnified by the corporation for the
expenses, judgments, fines and amounts paid in settlement of such litigation
(other than a derivative suit) even if he is not successful on the merits if he
acted in good faith and in a manner he reasonably believed to be in or not
opposed to the best interests of the corporation (and, in the case of a criminal
proceeding, had no reasonable cause to believe his conduct was unlawful), and
(iii) may be indemnified by the corporation for expenses of a derivative suit (a
suit by a stockholder alleging a breach by a director or officer of a duty owed
to the corporation), even if he is not successful on the merits, if he acted in
good faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the corporation, provided that no such indemnification may be
made in accordance with this clause (iii) if the director or officer is adjudged
liable to the corporation, unless a court determines that, despite such
adjudication but in view of all of the circumstances, he is entitled to
indemnification of such expenses. The indemnification described in clauses (ii)
and (iii) above shall be made only upon order by a court or a determination by
(a) a majority of a quorum of disinterested directors, (b) under certain
circumstances, independent legal counsel or (c) the stockholders, that
indemnification is proper because the applicable standard of conduct is met.
Expenses incurred by a director or officer in defending an action may be
advanced by the corporation prior to the final disposition of such action upon
receipt of an undertaking by such director or officer to repay such expenses if
it is ultimately determined that he is not entitled to be indemnified in
connection with the proceeding to which the expenses related.
 
     Our Restated Certificate of Incorporation includes a provision eliminating,
to the fullest extent permitted by Delaware law, director liability for monetary
damages for breaches of fiduciary duty.
 
                                      II-1
   20
 
ITEM 16. EXHIBITS
 

   
 1    Form of Underwriting Agreement
 4    Indenture, dated as of February 18, 1997, between Fluor
      Corporation and Bankers Trust Company, as trustee(1)
 5    Opinion of Gibson, Dunn & Crutcher LLP, counsel to Fluor
      Corporation
12    Statement of computation of ratio of earnings to fixed
      charges
23.1  Consent of Gibson, Dunn & Crutcher LLP, counsel to Fluor
      Corporation (included in Exhibit 5)
23.2  Consent of independent auditors
24    Powers of Attorney
25    Statement of Eligibility and Qualifications of Trustee on
      Form T-1(2)

 
- -------------------------
   
(1) Incorporated by reference to Exhibit 4.1 of our Current Report on Form 8-K
    filed on March 7, 1997.
    
 
   
(2) Incorporated by reference to Exhibit 25 of our Registration Statement on
    Form S-3 (Registration No. 333-18315) filed on December 20, 1996.
    
 
ITEM 17. UNDERTAKINGS
 
A. UNDERTAKING PURSUANT TO RULE 415
 
     We hereby undertake:
 
     (1) to file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:
 
          (a) to include any prospectus required by Section 10(a)(3) of the
     Securities Act of 1933 (the "Securities Act");
 
          (b) to reflect in the prospectus any facts or events arising after the
     effective date of the Registration Statement (or the most recent
     post-effective amendment thereof) which, individually or in the aggregate,
     represent a fundamental change in the information set forth in the
     Registration Statement, except that any increase or decrease in volume of
     securities offered (if the total dollar value of securities offered would
     not exceed that which was registered) and any deviation from the low or
     high end of the estimated maximum offering range may be reflected in the
     form of a prospectus filed with the SEC pursuant to Rule 424(b) if, in the
     aggregate, the changes in volume and price represent no more than 20
     percent change in the maximum aggregate offering price set forth in the
     "Calculation of Registration Fee" table in the effective Registration
     Statement;
 
          (c) to include any material information with respect to the plan of
     distribution not previously disclosed in the Registration Statement or any
     material change to such information in the Registration Statement;
 
provided, however, that paragraphs A(l)(a) and A(l)(b) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by us pursuant to Section 13
or 15(d) of the Securities Exchange Act of 1934 (the "Exchange Act") that are
incorporated by reference in the Registration Statement.
 
     (2) That, for the purpose of determining any liability under the Securities
Act, each such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial bona fide offering
thereof.
 
                                      II-2
   21
 
     (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.
 
B. UNDERTAKING REGARDING FILINGS INCORPORATING SUBSEQUENT EXCHANGE ACT DOCUMENTS
BY REFERENCE
 
     We hereby undertake that, for purposes of determining any liability under
the Securities Act, each filing of our annual report pursuant to Section 13(a)
or 15(d) of the Exchange Act (and, where applicable, each filing of an employee
benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that
is incorporated by reference in the Registration Statement shall be deemed to be
a new Registration Statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed the initial bona fide
offering thereof.
 
C. UNDERTAKING IN RESPECT OF INDEMNIFICATION
 
   
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to our directors, officers and controlling persons pursuant to
the foregoing provisions, or otherwise, we have been advised that in the opinion
of the SEC such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, we will, unless in the opinion
of our counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by
us is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
    
 
                                      II-3
   22
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Irvine, State of California, on January 22, 1999.
    
 
                                          FLUOR CORPORATION
                                          By:     /s/ LAWRENCE N. FISHER
                                             -----------------------------------
                                                     Lawrence N. Fisher
                                                Senior Vice President-Law and
                                                          Secretary
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.
 
   


                  SIGNATURE                               TITLE                    DATE
                  ---------                               -----                    ----
                                                                       
                      *                          Chief Executive Officer,    January 22, 1999
- ---------------------------------------------   Chairman of the Board and
           Philip J. Carroll, Jr.                  Director (Principal
                                                    Executive Officer)
 
                      *                        Senior Vice President, Chief  January 22, 1999
- ---------------------------------------------     Financial Officer and
              James O. Rollans                     Director (Principal
                                                    Financial Officer)
 
                      *                             Vice President and       January 22, 1999
- ---------------------------------------------     Controller (Principal
              Victor L. Prechtl                    Accounting Officer)
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
            Donald L. Blankenship
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
          Carroll A. Campbell, Jr.
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
               Peter J. Fluor
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
              David P. Gardner
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
              Thomas L. Gossage
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
               Bobby R. Inman
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
              Vilma S. Martinez
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
               Dean R. O'Hare
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
       Lord Robin W. Renwick, K.C.M.G.

    
 
                                      II-4
   23
 


                  SIGNATURE                               TITLE                    DATE
                  ---------                               -----                    ----
                                                                       
                      *                                  Director            January 22, 1999
- ---------------------------------------------
               Martha R. Seger
 
                      *                                  Director            January 22, 1999
- ---------------------------------------------
               James C. Stein

 
- -------------------------
   
* The undersigned does hereby sign this registration statement on behalf of each
  of the above-indicated director or officer of Fluor Corporation pursuant to
  powers of attorney executed by each such director or officer.
    
 
                                                /s/ LAWRENCE N. FISHER
                                          --------------------------------------
                                                    Lawrence N. Fisher
                                                     Attorney-in-Fact
 
                                      II-5
   24
 
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                           -------------------------
 
                                    EXHIBITS
                                       TO
                                    FORM S-3
 
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
 
                           -------------------------
 
                               FLUOR CORPORATION
 
                           -------------------------
 
                      EXHIBITS 1, 5, 12, 23.1, 23.2 AND 24
 
================================================================================
   25
 
                                 EXHIBIT INDEX
 


  EXHIBIT
    NO.                                DESCRIPTION
  -------                              -----------
            
    1          Form of Underwriting Agreement
    4          Indenture, dated as of February 18, 1997, between Fluor
               Corporation and Bankers Trust Company, as trustee(1)
    5          Opinion of Gibson, Dunn & Crutcher LLP, counsel to Fluor
               Corporation
   12          Statement of computation of ratio of earnings to fixed
               charges
   23.1        Consent of Gibson, Dunn & Crutcher LLP, counsel to Fluor
               Corporation (included in Exhibit 5)
   23.2        Consent of independent auditors
   24          Powers of Attorney
   25          Statement of Eligibility and Qualification of Trustee on
               Form T-1(2)

 
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(1) Incorporated by reference to Exhibit 4.1 of our Current Report on Form 8-K
    filed on March 7, 1997.
    
 
   
(2) Incorporated by reference to Exhibit 25 of our Registration Statement on
    Form S-3 (Registration No. 333-18315) filed on December 20, 1996.