<PAGE>   1


     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 9, 2001

                                                     REGISTRATION NO. 333-

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              JLG INDUSTRIES, INC.
             (Exact name of registrant as specified in its charter)

              PENNSYLVANIA                               25-1199382
     (State or other jurisdiction of                   (I.R.S. employer
      incorporation or organization)                identification number)

                 1 JLG DRIVE, MCCONNELLSBURG, PENNSYLVANIA 17233
                    (Address of Principal Executive Offices)

                                   -----------

        THE GRADALL COMPANY HOURLY EMPLOYEES' SAVINGS AND INVESTMENT PLAN
                              (Full title of plan)

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

                                THOMAS D. SINGER
                    SENIOR VICE PRESIDENT AND GENERAL COUNSEL
                 1 JLG DRIVE, MCCONNELLSBURG, PENNSYLVANIA 17233
                                 (717) 485-5161
 (Name, address and telephone number, including area code, of agent for service)

                                  ------------
                                  WITH COPY TO:
                              W. ANDREW JACK, ESQ.
                               COVINGTON & BURLING
                         1201 PENNSYLVANIA AVENUE, N.W.
                             WASHINGTON, D.C. 20004
                                 (202) 662-6000

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

                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------
                                                             PROPOSED MAXIMUM         PROPOSED MAXIMUM           AMOUNT OF
TITLE OF EACH CLASS OF SECURITIES        AMOUNT TO BE             OFFERING                 AGGREGATE            REGISTRATION
TO BE REGISTERED                          REGISTERED          PRICE PER SHARE           OFFERING PRICE              FEE
------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                  <C>                      <C>                       <C>
Common Stock, $.20 par value and       100,000 shares (1)         $9.575 (2)              $957,500 (2)             $239.38
related Common Stock Purchase
Rights (3) (4)
------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1)      Pursuant to Rule 416(a) under the Securities Act of 1933, as amended
         (the "1933 Act") the number of shares of Common Stock registered hereby
         is subject to adjustment to prevent dilution by reason of any stock
         dividend, stock split, recapitalization or other similar transaction
         that results in an increase in the number of the outstanding shares of
         Common Stock of JLG Industries, Inc.

(2)      Calculated in accordance with Rule 457(h) under the 1933 Act on the
         basis of the average of the high and low sales prices per share of
         Common Stock on October 5, 2001, as reported by the New York Stock
         Exchange.

(3)      Pursuant to Rule 416(c) under the 1933 Act, this Registration Statement
         also registers an indeterminate amount of participation interests in
         the Gradall Company Hourly Employees' Savings and Investment Plan.

(4)      No separate consideration will be received for the Common Stock
         Purchase Rights, which initially will trade together with the Common
         Stock.
<PAGE>   2
                                      -2-



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

         JLG Industries, Inc. (the "Company") hereby incorporates by reference
into this Registration Statement the following documents previously filed with
the Securities and Exchange Commission (the "Commission"):

         (a)      The Company's Annual Report on Form 10-K for the fiscal year
                  ended July 31, 2001, filed with the Commission on October 9,
                  2001.

         (b)      The description of the Common Stock contained in Company's
                  Registration Statement on Form 8-A, filed with the Commission
                  on September 5, 1996, pursuant to Section 12 of the Securities
                  Act of 1934, as amended (the "1934 Act") and the Company's
                  Registration Statement on Form 8-A12B, filed with the
                  Commission on May 31, 2000, pursuant to Section 12 of the 1934
                  Act.

         All documents filed by the Company or by the Plan pursuant to Section
13(a), 13(c), 14 or 15(d) of the 1934 Act, after the date of this Registration
Statement and prior to the filing of a post-effective amendment which indicates
that all securities offered hereby have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by
reference into this Registration Statement and to be a part hereof from the date
of filing of such documents. Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified
or superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any subsequently filed document which also is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Registration
Statement.

ITEM 4.  DESCRIPTION OF SECURITIES.

         Not Applicable.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.

         Not Applicable.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section 1741 of the Associations Code of the Commonwealth of
Pennsylvania (the "Associations Code") provides that the Company may indemnify a
director or officer

<PAGE>   3
                                      -3-


against his or her expenses and, other than in an action by or in the right of
the Company, judgments, fines and amounts paid in settlement in connection with
any action or proceeding involving such person by reason of the fact that such
person is or was a director or officer, concerning actions taken in good faith
and in a manner reasonably believed to be in, or not opposed to, the best
interests of the Company, and, with respect to any criminal action or
proceeding, such person had no reason to believe his or her conduct was
unlawful. Section 1742 of the Associations Code provides that in a derivative
action, no indemnification shall be made with respect to any claim, issue or
matter as to which such director or officer shall have been adjudged to be
liable to the Company unless and only to the extent that the appropriate court
of the Commonwealth of Pennsylvania shall determine upon application that,
despite the adjudication of liability but in view of all the circumstances of
the case, such director or officer is fairly and reasonably entitled to
indemnity for such expenses which the court shall deem proper. Additionally, the
Company is required, pursuant to Associations Code Section 1743, to indemnify
its directors and officers against expenses to the extent that such directors or
officers have been successful on the merits or otherwise in any third party or
derivative action or proceedings or in the defense of any claim, issue or matter
therein. Furthermore, Section 1747 of the Associations Code declares that a
corporation's purchase of indemnification insurance for officers or directors is
consistent with the public policy of the Commonwealth of Pennsylvania.

         The Company's By-Laws and Articles of Incorporation relating to the
limitation of the personal liability of the Company's directors and officers for
monetary damages and to the indemnification of the Company's directors and
officers (1) limit the personal liability of a director or officer for monetary
damages for any act or omission unless the director or officer has breached or
failed to perform the duties of his office as required under Pennsylvania law
and the breach or failure to perform constitutes self-dealing, willful
misconduct or recklessness, and (2) require the Company to indemnify directors,
officers and employees for liability or expenses incurred in such capacity,
except if the person's conduct was determined to constitute self-dealing,
willful misconduct or recklessness.

         Pursuant to policies of directors' and officers' liability and
corporation reimbursement insurance, the Company's officers and directors are
insured, subject to the limits, deductibles, exceptions and other items and
conditions of such policies, against liability for an actual or alleged breach
of duty, neglect, error, misstatement, misleading statement, omission, or other
act done or wrongfully attempted while acting in their capacities as directors
or officers of the Company.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED.

         Not Applicable.

<PAGE>   4
                                      -4-


ITEM 8.  EXHIBITS.

    (a)  Number   Exhibit

         4.1      Articles of Incorporation of the Company, which appears as
                  Exhibit 3 to the Company's Form 10-Q (File No. 0-8454 -- filed
                  December 13, 1996) is hereby incorporated by reference.

         4.2      By-laws of the Company, which appears as Exhibit 3.1 to the
                  Company's Form 10-Q (File No. 0-8454 -- filed December 14,
                  1999), is hereby incorporated by reference.

         4.3      Rights Agreement, dated as of May 24, 2000 between the Company
                  and American Stock Transfer and Trust Company which appears as
                  Exhibit 1 to the Company's Form 8-A12B (File No. 0-8454 --
                  filed May 21, 2000).

         5.1      Opinion of Covington & Burling regarding legality of Common
                  Stock

         23.1     Consent of Ernst & Young LLP

         23.2     Consent of Covington & Burling (included in Ex. 5.1)

         24.1     Power of Attorney of Roy V. Armes

         24.2     Power of Attorney of George R. Kempton

         24.3     Power of Attorney of James A. Mezera

         24.4     Power of Attorney of Stephen Rabinowitz

         24.5     Power of Attorney of Raymond C. Stark

         24.6     Power of Attorney of Thomas C. Wajnert

         24.7     Power of Attorney of Charles O. Wood, III


         The Company has obtained from the Internal Revenue Service a
determination letter that the Plan is qualified under Section 401 of the
Internal Revenue Code of 1986, as amended, and hereby undertakes to submit any
amendments to the Plan to the IRS in a timely manner and to make any changes
required by the IRS to maintain the qualification of the Plan under Section 401.


ITEM 9.  UNDERTAKINGS.

         A. The undersigned registrants hereby undertake: (1) to file, during
any period in which offers or sales are being made, a post-effective amendment
to this Registration Statement (i) to include any prospectus required by Section
10(a)(3) of the 1933 Act, (ii) to reflect in the prospectus any facts or events
arising after the effective date of this 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 this
Registration Statement. Notwithstanding the foregoing, any increase or decrease
in volume of securities offered (if the total dollar value of securities offered
would not

<PAGE>   5
                                      -5-



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 prospectus
filed with the Commission pursuant to Rule 424(b)(section 230.424(b) of this
chapter) if, in the aggregate, the changes in volume and price represent no
more than a 20% change in the maximum aggregate offering price set forth in the
"Calculation of Registration Fee" table in the effective registration statement,
and (iii) to include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement; provided,
however, that clauses (1)(i) and (1)(ii) shall not apply if the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by a registrant pursuant to Section 13 or
Section 15(d) of the 1934 Act that are incorporated by reference into this
Registration Statement; (2) that for the purpose of determining any liability
under the 1933 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; and (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. The undersigned registrants hereby undertake that, for purposes of
determining any liability under the 1933 Act, each filing of the registrants'
annual reports pursuant to Section 13(a) or Section 15(d) of the 1934 Act (where
applicable, each filing of an employee benefit plan's annual report pursuant to
section 15(d) of the 1934 Act) that is incorporated by reference into this
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 to be the initial bona fide offering thereof.

         C. Insofar as indemnification for liabilities arising under the 1933
Act may be permitted to directors, officers, or controlling persons of the
registrants pursuant to the foregoing provisions, or otherwise, the registrants
have been advised that, in the opinion of the Commission, such indemnification
is against public policy as expressed in the 1933 Act, and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by a registrant of expenses incurred or paid
by a director, officer, or controlling person of a registrant in the successful
defense of any action, suit, or proceeding) is asserted by such director,
officer of registrant, or controlling person in connection with the securities
being registered, a registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the 1933 Act and will be governed by the
final adjudication of such issue.
<PAGE>   6
                                      -6-



                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8, and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of McConnellsburg, State of Pennsylvania, on this
9th day of October, 2001.

                                     JLG INDUSTRIES, INC.


                                     By: /s/ William M. Lasky
                                         --------------------------------------
           `                             William M. Lasky
                                         President, Chief Executive Officer and
                                         Chairman of the Board



         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed below by the following persons in
the capacities and on the dates indicated.
<TABLE>
<CAPTION>

Signature                                   Title                                    Date
---------                                   -----                                    ----

<S>                               <C>                                            <C>

/s/ William M. Lasky              President, Chief Executive Officer and         October 9, 2001
---------------------------       Chairman of the Board
William M. Lasky                  (Principal Executive Officer)




/s/ James H. Woodward, Jr.        Senior Vice President and                      October 9, 2001
---------------------------       Chief Financial Officer
James H. Woodward, Jr.            (Principal Financial Officer
                                  and Principal Accounting Officer)



/s/ Roy V. Armes*                 Director                                       October 9, 2001
---------------------------
Roy V. Armes
</TABLE>


<PAGE>   7
                                      -7-

<TABLE>

<S>                               <C>                                            <C>


/s/ George R. Kempton*            Director                                       October 9, 2001
---------------------------
George R. Kempton



/s/ James A. Mezera*              Director                                       October 9, 2001
---------------------------
James A. Mezera


/s/ Stephen Rabinowitz*           Director                                       October 9, 2001
---------------------------
Stephen Rabinowitz



/s/ Raymond C. Stark*             Director                                       October 9, 2001
---------------------------
Raymond C. Stark



/s/ Thomas C. Wajnert*            Director                                       October 9, 2001
---------------------------
Thomas C. Wajnert


/s/ Charles O. Wood, III*         Director                                       October 9, 2001
---------------------------
Charles O. Wood, III
</TABLE>


*   By Attorney-in-fact



         Pursuant to the requirements of the Securities Act of 1933, as amended,
the undersigned has duly caused this Registration Statement to be signed by The
Gradall Company Hourly Employees' Savings and Investment Plan, thereunto duly
authorized, in the City of McConnellsburg, State of Pennsylvania, on the 9th day
of October, 2001.


                                    THE GRADALL COMPANY HOURLY EMPLOYEES'
                                    SAVINGS AND INVESTMENT PLAN


                                    By: /s/ Thomas D. Singer
                                        ---------------------------------------
                                        Thomas D. Singer
                                        Senior Vice President, General Counsel
                                        and Secretary
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{"company-data": {"conformed-name": "JLG INDUSTRIES INC", "cik": "0000216275", "assigned-sic": "3531", "irs-number": "251199382", "state-of-incorporation": "PA", "fiscal-year-end": "0731"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-71430", "film-number": "1757184"}, "business-address": {"street1": "1 JLG DR", "city": "MCCONNELLSBURG", "state": "PA", "zip": "17233", "phone": "7174855161"}}
1

     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 9, 2001

                                                     REGISTRATION NO. 333-

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              JLG INDUSTRIES, INC.
             (Exact name of registrant as specified in its charter)

              PENNSYLVANIA                               25-1199382
     (State or other jurisdiction of                   (I.R.S. employer
      incorporation or organization)                identification number)

                 1 JLG DRIVE, MCCONNELLSBURG, PENNSYLVANIA 17233
                    (Address of Principal Executive Offices)

                                   -----------

        THE GRADALL COMPANY HOURLY EMPLOYEES' SAVINGS AND INVESTMENT PLAN
                              (Full title of plan)

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

                                THOMAS D. SINGER
                    SENIOR VICE PRESIDENT AND GENERAL COUNSEL
                 1 JLG DRIVE, MCCONNELLSBURG, PENNSYLVANIA 17233
                                 (717) 485-5161
 (Name, address and telephone number, including area code, of agent for service)

                                  ------------
                                  WITH COPY TO:
                              W. ANDREW JACK, ESQ.
                               COVINGTON & BURLING
                         1201 PENNSYLVANIA AVENUE, N.W.
                             WASHINGTON, D.C. 20004
                                 (202) 662-6000

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

                         CALCULATION OF REGISTRATION FEE
------------------------------------------------------------------------------------------------------------------------------
                                                             PROPOSED MAXIMUM         PROPOSED MAXIMUM           AMOUNT OF
TITLE OF EACH CLASS OF SECURITIES        AMOUNT TO BE             OFFERING                 AGGREGATE            REGISTRATION
TO BE REGISTERED                          REGISTERED          PRICE PER SHARE           OFFERING PRICE              FEE
------------------------------------------------------------------------------------------------------------------------------
Common Stock, $.20 par value and       100,000 shares (1)         $9.575 (2)              $957,500 (2)             $239.38
related Common Stock Purchase
Rights (3) (4)
------------------------------------------------------------------------------------------------------------------------------
(1)      Pursuant to Rule 416(a) under the Securities Act of 1933, as amended
         (the "1933 Act") the number of shares of Common Stock registered hereby
         is subject to adjustment to prevent dilution by reason of any stock
         dividend, stock split, recapitalization or other similar transaction
         that results in an increase in the number of the outstanding shares of
         Common Stock of JLG Industries, Inc.

(2)      Calculated in accordance with Rule 457(h) under the 1933 Act on the
         basis of the average of the high and low sales prices per share of
         Common Stock on October 5, 2001, as reported by the New York Stock
         Exchange.

(3)      Pursuant to Rule 416(c) under the 1933 Act, this Registration Statement
         also registers an indeterminate amount of participation interests in
         the Gradall Company Hourly Employees' Savings and Investment Plan.

(4)      No separate consideration will be received for the Common Stock
         Purchase Rights, which initially will trade together with the Common
         Stock.
2
                                      -2-

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

         JLG Industries, Inc. (the "Company") hereby incorporates by reference
into this Registration Statement the following documents previously filed with
the Securities and Exchange Commission (the "Commission"):

         (a)      The Company's Annual Report on Form 10-K for the fiscal year
                  ended July 31, 2001, filed with the Commission on October 9,
                  2001.

         (b)      The description of the Common Stock contained in Company's
                  Registration Statement on Form 8-A, filed with the Commission
                  on September 5, 1996, pursuant to Section 12 of the Securities
                  Act of 1934, as amended (the "1934 Act") and the Company's
                  Registration Statement on Form 8-A12B, filed with the
                  Commission on May 31, 2000, pursuant to Section 12 of the 1934
                  Act.

         All documents filed by the Company or by the Plan pursuant to Section
13(a), 13(c), 14 or 15(d) of the 1934 Act, after the date of this Registration
Statement and prior to the filing of a post-effective amendment which indicates
that all securities offered hereby have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by
reference into this Registration Statement and to be a part hereof from the date
of filing of such documents. Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified
or superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any subsequently filed document which also is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Registration
Statement.

ITEM 4.  DESCRIPTION OF SECURITIES.

         Not Applicable.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.

         Not Applicable.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section 1741 of the Associations Code of the Commonwealth of
Pennsylvania (the "Associations Code") provides that the Company may indemnify a
director or officer
3
                                      -3-

against his or her expenses and, other than in an action by or in the right of
the Company, judgments, fines and amounts paid in settlement in connection with
any action or proceeding involving such person by reason of the fact that such
person is or was a director or officer, concerning actions taken in good faith
and in a manner reasonably believed to be in, or not opposed to, the best
interests of the Company, and, with respect to any criminal action or
proceeding, such person had no reason to believe his or her conduct was
unlawful. Section 1742 of the Associations Code provides that in a derivative
action, no indemnification shall be made with respect to any claim, issue or
matter as to which such director or officer shall have been adjudged to be
liable to the Company unless and only to the extent that the appropriate court
of the Commonwealth of Pennsylvania shall determine upon application that,
despite the adjudication of liability but in view of all the circumstances of
the case, such director or officer is fairly and reasonably entitled to
indemnity for such expenses which the court shall deem proper. Additionally, the
Company is required, pursuant to Associations Code Section 1743, to indemnify
its directors and officers against expenses to the extent that such directors or
officers have been successful on the merits or otherwise in any third party or
derivative action or proceedings or in the defense of any claim, issue or matter
therein. Furthermore, Section 1747 of the Associations Code declares that a
corporation's purchase of indemnification insurance for officers or directors is
consistent with the public policy of the Commonwealth of Pennsylvania.

         The Company's By-Laws and Articles of Incorporation relating to the
limitation of the personal liability of the Company's directors and officers for
monetary damages and to the indemnification of the Company's directors and
officers (1) limit the personal liability of a director or officer for monetary
damages for any act or omission unless the director or officer has breached or
failed to perform the duties of his office as required under Pennsylvania law
and the breach or failure to perform constitutes self-dealing, willful
misconduct or recklessness, and (2) require the Company to indemnify directors,
officers and employees for liability or expenses incurred in such capacity,
except if the person's conduct was determined to constitute self-dealing,
willful misconduct or recklessness.

         Pursuant to policies of directors' and officers' liability and
corporation reimbursement insurance, the Company's officers and directors are
insured, subject to the limits, deductibles, exceptions and other items and
conditions of such policies, against liability for an actual or alleged breach
of duty, neglect, error, misstatement, misleading statement, omission, or other
act done or wrongfully attempted while acting in their capacities as directors
or officers of the Company.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED.

         Not Applicable.
4
                                      -4-

ITEM 8.  EXHIBITS.

    (a)  Number   Exhibit

         4.1      Articles of Incorporation of the Company, which appears as
                  Exhibit 3 to the Company's Form 10-Q (File No. 0-8454 -- filed
                  December 13, 1996) is hereby incorporated by reference.

         4.2      By-laws of the Company, which appears as Exhibit 3.1 to the
                  Company's Form 10-Q (File No. 0-8454 -- filed December 14,
                  1999), is hereby incorporated by reference.

         4.3      Rights Agreement, dated as of May 24, 2000 between the Company
                  and American Stock Transfer and Trust Company which appears as
                  Exhibit 1 to the Company's Form 8-A12B (File No. 0-8454 --
                  filed May 21, 2000).

         5.1      Opinion of Covington & Burling regarding legality of Common
                  Stock

         23.1     Consent of Ernst & Young LLP

         23.2     Consent of Covington & Burling (included in Ex. 5.1)

         24.1     Power of Attorney of Roy V. Armes

         24.2     Power of Attorney of George R. Kempton

         24.3     Power of Attorney of James A. Mezera

         24.4     Power of Attorney of Stephen Rabinowitz

         24.5     Power of Attorney of Raymond C. Stark

         24.6     Power of Attorney of Thomas C. Wajnert

         24.7     Power of Attorney of Charles O. Wood, III

         The Company has obtained from the Internal Revenue Service a
determination letter that the Plan is qualified under Section 401 of the
Internal Revenue Code of 1986, as amended, and hereby undertakes to submit any
amendments to the Plan to the IRS in a timely manner and to make any changes
required by the IRS to maintain the qualification of the Plan under Section 401.

ITEM 9.  UNDERTAKINGS.

         A. The undersigned registrants hereby undertake: (1) to file, during
any period in which offers or sales are being made, a post-effective amendment
to this Registration Statement (i) to include any prospectus required by Section
10(a)(3) of the 1933 Act, (ii) to reflect in the prospectus any facts or events
arising after the effective date of this 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 this
Registration Statement. Notwithstanding the foregoing, any increase or decrease
in volume of securities offered (if the total dollar value of securities offered
would not
5
                                      -5-

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 prospectus
filed with the Commission pursuant to Rule 424(b)(section 230.424(b) of this
chapter) if, in the aggregate, the changes in volume and price represent no
more than a 20% change in the maximum aggregate offering price set forth in the
"Calculation of Registration Fee" table in the effective registration statement,
and (iii) to include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement; provided,
however, that clauses (1)(i) and (1)(ii) shall not apply if the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by a registrant pursuant to Section 13 or
Section 15(d) of the 1934 Act that are incorporated by reference into this
Registration Statement; (2) that for the purpose of determining any liability
under the 1933 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; and (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. The undersigned registrants hereby undertake that, for purposes of
determining any liability under the 1933 Act, each filing of the registrants'
annual reports pursuant to Section 13(a) or Section 15(d) of the 1934 Act (where
applicable, each filing of an employee benefit plan's annual report pursuant to
section 15(d) of the 1934 Act) that is incorporated by reference into this
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 to be the initial bona fide offering thereof.

         C. Insofar as indemnification for liabilities arising under the 1933
Act may be permitted to directors, officers, or controlling persons of the
registrants pursuant to the foregoing provisions, or otherwise, the registrants
have been advised that, in the opinion of the Commission, such indemnification
is against public policy as expressed in the 1933 Act, and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by a registrant of expenses incurred or paid
by a director, officer, or controlling person of a registrant in the successful
defense of any action, suit, or proceeding) is asserted by such director,
officer of registrant, or controlling person in connection with the securities
being registered, a registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the 1933 Act and will be governed by the
final adjudication of such issue.
6
                                      -6-

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8, and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of McConnellsburg, State of Pennsylvania, on this
9th day of October, 2001.

                                     JLG INDUSTRIES, INC.

                                     By: /s/ William M. Lasky
                                         --------------------------------------
           `                             William M. Lasky
                                         President, Chief Executive Officer and
                                         Chairman of the Board

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed below by the following persons in
the capacities and on the dates indicated.
Signature                                   Title                                    Date
---------                                   -----                                    ----
/s/ William M. Lasky              President, Chief Executive Officer and         October 9, 2001
---------------------------       Chairman of the Board
William M. Lasky                  (Principal Executive Officer)

/s/ James H. Woodward, Jr.        Senior Vice President and                      October 9, 2001
---------------------------       Chief Financial Officer
James H. Woodward, Jr.            (Principal Financial Officer
                                  and Principal Accounting Officer)

/s/ Roy V. Armes*                 Director                                       October 9, 2001
---------------------------
Roy V. Armes
7
                                      -7-
/s/ George R. Kempton*            Director                                       October 9, 2001
---------------------------
George R. Kempton

/s/ James A. Mezera*              Director                                       October 9, 2001
---------------------------
James A. Mezera

/s/ Stephen Rabinowitz*           Director                                       October 9, 2001
---------------------------
Stephen Rabinowitz

/s/ Raymond C. Stark*             Director                                       October 9, 2001
---------------------------
Raymond C. Stark

/s/ Thomas C. Wajnert*            Director                                       October 9, 2001
---------------------------
Thomas C. Wajnert

/s/ Charles O. Wood, III*         Director                                       October 9, 2001
---------------------------
Charles O. Wood, III
*   By Attorney-in-fact

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the undersigned has duly caused this Registration Statement to be signed by The
Gradall Company Hourly Employees' Savings and Investment Plan, thereunto duly
authorized, in the City of McConnellsburg, State of Pennsylvania, on the 9th day
of October, 2001.

                                    THE GRADALL COMPANY HOURLY EMPLOYEES'
                                    SAVINGS AND INVESTMENT PLAN

                                    By: /s/ Thomas D. Singer
                                        ---------------------------------------
                                        Thomas D. Singer
                                        Senior Vice President, General Counsel
                                        and Secretary