Document:

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                                                                   Exhibit 10.19

                              EMPLOYMENT AGREEMENT

      THIS EMPLOYMENT AGREEMENT (the "Agreement") is made and entered into as of
the 1st day of November, 1999, by and between MGC COMMUNICATIONS, INC., a Nevada
corporation (the "Company") and NIELD J. MONTGOMERY ("Employee").

                         W I T N E S S E T H   T H A T:

            The parties, for and in consideration of the mutual and reciprocal
covenants and agreements hereinafter contained, do contract and agree as
follows:

      1. Employment: Company hereby employs Employee and Employee hereby accepts
employment by Company upon all of the terms and conditions as are hereinafter
set forth.

      2. Duties:

            A. Employee shall devote such time as the parties may determine to
be reasonable in connection with the following: (i) Employee shall use good
faith efforts to advise Company on regulatory developments of importance to
Company's business and to provide a monthly report to Company for such purposes,
(ii) Employee shall make himself available to Company at any time, to testify,
at the request of Company in any legal, regulatory or administrative proceedings
involving any matters with which Employee was involved during his employment
with Company prior to November 1, 1999, and (iii) such other duties as are
mutually agreeable to the parties.

            B. In the event Employee is contacted by parties or their legal
counsel involved in litigation adverse to the Company or its affiliates,
Employee (i) agrees to provide notice of such contact as soon practicable; and
(ii) acknowledges that any communication with or in the presence of legal
counsel for the Company (including without limitation the Company's outside
legal counsel, the Company's inside legal counsel and legal counsel of each
related or affiliated entity of the Company) shall be privileged to the extent
recognized by law and, further, will not do anything to waive such privilege
unless and until a court of competent jurisdiction decides that the
communication is not privileged. In the event the existence or scope of the
privileged communication is subject to legal challenge, then the Company must
either waive the privilege or pursue litigation to protect the privilege at the
Company's sole expense.

      3. Term of Agreement: This Agreement shall be effective as of November 1,
1999 (the "Effective Date") and Employee's employment hereunder shall continue
until April 1, 2001.

      4. Limitations of Executive Duties: Employee shall not, without consent
first being given by the Chairman or Board of Directors of the Company:

            A. Enter into any contract, oral or written, in the name of, for or
on behalf of Company.

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            B. Use any money belonging to Company or pledge its credit.

            C. Commit or suffer to be committed any act whereby Company's
property may be subject to attachment or seizure.

            D. Cause Company to become a guarantor, surety or endorser or give
any note for the benefit of any other person whomsoever.

            Employee shall indemnify and hold Company harmless from and against
any and all damages, actions, causes of action, claims and other liabilities,
contingent or otherwise, directed toward Company by others as a result of
Employee's violation of any of the provisions hereof.

      5. Compensation: During the term of this Agreement, Company agrees to pay
to Employee, and Employee agrees to accept from Company, in full payment for
services rendered by Employee and work to be performed by him under the terms of
this Agreement, a monthly base salary of Five Thousand Dollars ($5,000.00),
payable in installments in accordance with the Company's payroll practices.

      6. Fringe Benefits: Employee shall not be entitled to participate in any
benefit plans of Company or any other fringe benefits, whether or not offered to
any other employees of Company.

      7. Deductions: Deductions shall be made from Employee's salary for social
security, Medicare, federal and state withholding taxes, and any other such
taxes as may from time to time be required by governmental authority.

      8. Expenses. During the term of this Agreement, Company agrees to
reimburse Employee, after presentation of receipts and other appropriate
documentation, for all reasonable, ordinary and necessary travel costs and other
necessary expenses incurred by Employee in performing his duties pursuant to
this Agreement to the extent such expenses have been approved by the Chairman of
Company.

      9. Termination:

            A. Employee may, with or without cause, terminate this Agreement by
giving to Company thirty (30) days written notice.

            B. Company may terminate this Agreement immediately for "cause".
Cause shall be defined as any of the following: (i) Employee shall commit a
felony or other act involving moral turpitude, or (ii) Employee shall commit any
act of prohibitive conduct as set forth in Item 4 of this Agreement. Any
termination under this Paragraph B shall take effect immediately upon Employee's
receipt of written notice from Company to Employee. The failure of Company to
terminate Employee's employment hereunder for cause as a result of any of the
foregoing at any one or more times shall not affect Company's ability to
terminate Employee's employment hereunder for cause as a result of the
subsequent occurrence of any act giving rise to "cause" hereunder.

      10. Assignment: This Agreement, as it relates to the employment of
Employee, is a personal contract and the rights and interests of Employee
hereunder may not be sold, transferred, assigned,

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pledged or hypothecated. However, this Agreement shall inure to the benefit of
and be binding upon the Company and its successors and assigns including,
without limitation, any corporation or other entity into which the Company is
merged or which acquires all or substantially all of the outstanding common
stock or assets of the Company.

      11. Breach by Company. If there is a dispute regarding the payment of any
sum by Company hereunder, Company shall not be deemed to have failed to have
made a payment hereunder if pending the resolution of such dispute, Company pays
the amount in dispute into court or into an escrow account at Company's bank or
with Company's corporate counsel.

      12. Remedies Not Exclusive. The rights, remedies and benefits herein
expressly specified are cumulative and not exclusive of any rights, remedies or
benefits which any party may otherwise have.

      13. Invalid Provisions: The invalidity of any one or more of the clauses
or words contained in this Agreement shall not affect the reasonable
enforceability of the remaining provisions of this Agreement, all of which are
inserted herein conditionally upon being valid in law; and in the event that one
or more of the words or clauses contained herein shall be invalid, this
instrument shall be construed as if such invalid words or clauses had not been
inserted or, alternatively, said words or clauses shall be reasonably limited to
the extent that the applicable court interpreting the provisions of this
Agreement considers to be reasonable.

      14. Binding Effect: All the terms of this Agreement shall be binding upon
and inure to the benefit of the parties hereto and their respective legal
representatives, successors and assigns.

      15. Jurisdiction: Each of the undersigned further agrees that any action
or proceeding brought or initiated in respect of this Agreement may be brought
or initiated in the State Court of Clark County, Nevada, and each of the
undersigned consents to the exercise of personal jurisdiction and the placement
of venue in any of such courts, or in any jurisdiction allowed by law, in any
such action or proceeding and further consents that service of process may be
effected in any such action or proceeding in such manner as may be permitted by
law. Each of the undersigned further agrees that no such action shall be brought
against any party hereunder except in one of the courts above named.

      16. Attorney's Fees: In the event an action is taken by either party to
enforce this Agreement or resolve a dispute in connection herewith, the
prevailing party shall be entitled to recover the costs incurred with the
prosecution and defense of such action, including reasonable attorney's fees.

      17. Waiver of Breach or Violation Not Deemed Continuing: The waiver by
either party of any provision of this Agreement shall not operate as, or be
construed to be, a waiver of any subsequent breach hereof.

      18. Entire Agreement; Law Governing: This Agreement supersedes any and all
other agreements, either oral or in writing, between the parties hereto with
respect to the subject matter hereof, by and between Company and Employee, and
contains all the covenants and agreements among the parties with respect to such
subject matter. This Agreement shall be construed in accordance with the laws of
the State of Nevada.

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      19. Item Headings: The item headings contained in this Agreement are for
convenience only and shall in no manner be construed as a part of this
Agreement.

      IN WITNESS WHEREOF, Company has hereunto caused this Agreement to be
executed by a duly authorized officer and its seal to be affixed and Employee
has hereunto set his hand and seal as of the day and year first above written.

                                        EMPLOYEE:

                                        _________________________________ (SEAL)
                                        NIELD J. MONTGOMERY

                                        EMPLOYER:

                                        MGC COMMUNICATIONS, INC.

                                        By:_____________________________________
                                                       President

                                                   (CORPORATE SEAL)

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                                                                   Exhibit 10.20

                        STANDARD OFFICE LEASE AGREEMENT

This Lease between CHEYENNE INVESTMENTS L.L.C., a Nevada Limited Liability
Company, ("Landlord"), and MGC COMMUNICATIONS, INC., a Nevada Corporation,
("Tenant"), is dated March 25, 1999.

1.      LEASE OF PREMISES.

In consideration of the Rent (as defined at Section 5.4) and the provisions of
this Lease, Landlord leases to Tenant and Tenant leases from Landlord the
Premises shown by diagonal lines on the floor plan attached hereto as Exhibit
"A", and further described at Section 2i. The Premises are located within the
Building and Project described in Section 2m. Tenant shall have the
nonconclusive right (unless otherwise provided herein) in common with Landlord,
other tenants, subtenants and invitees, to use of the Common Areas (as defined
at Section 2c).

2.      DEFINITIONS.

As used in this Lease, the following terms shall have the following meanings:

a.     Base Rent (initial): $478,175.00
                           _________________________________________ per year.

A(1)   Common Area Expenses (initial): 68,508.00
                                      ______________________________ per year.

D.     Base Year; The calendar year of 2000
                                       ______________________________________

c.     Broker(s) ____________________________________________________________

       Landlord's ___________________________________________________________

       Tenant's _____________________________________________________________

d.     Commencement Date: November 6, 1999

e.     Common Areas: the building lobbies, common corridors and hallways,
       restrooms, garage and parking areas, stairways, elevators and other
       generally understood public or common areas. Landlord shall have the
       right to regulate or restrict the use of the Common Areas.

f.     Expense Stop: see 7h
                     _______________________________________________________

g.     Expiration Date: ?????? 31, 2004
                       ____________________________________ unless otherwise
       sooner terminated in accordance with the provisions of this Lease.

h.     Index (Section 5.3); United States Department of Labor, Bureau of Labor
       Statistics Consumer Price Index for All Urban Consumers, U.S. City
       Average, "All Items" (1967-100).

i.     Landlord's Mailing Address:

                          3291 N. Buffalo Dr., Stc. 5
                              Las Vegas, NV 89125

       Tenant's Mailing Address:
                               3301 Buffalo Drive
                               Las Vegas, NV 89129

j.     Monthly Installments of Base Rent (initial): $35,681.25
                                                  ___________ per month.

j(i).  Monthly installments of Common Area Maintenance Charge (initial)
       $5,709.00
       __________

k.     Parking: Tenant shall be permitted to park N/A employees and visitors
       cars on a non exclusive basis in the area(s) designated by Landlord for
       parking. Tenant shall abide by any and all parking regulations and rules
       established from time to time by Landlord's parking operator.

l.     Premises: approximately 28,545 square feet of Rentable Area, shown by
       diagonal lines on Exhibit "A," located in Building 9 and known as Suite
       N/A.

m.     Project: the building of which the Premises are a part (the "Building")
       and any other buildings or improvements on the real property (the
       "Property") located at FLYNN GALLAGHER CORPORATE CENTRE and further
       described at Exhibit "B."

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                                                                     Initial
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n.   Both parties expressly and explicitly agree that they have reviewed all of
     the lease agreement including but not limited to attached addenda and
     exhibits to their satisfaction prior to the execution of this lease
     agreement. Both parties have had the opportunity have legal counsel review
     this lease agreement and if either party chooses not to seek advice of
     counsel then said decision will be made with knowing and willing consent.

1.   Waiver. No delay or omission in the exercise of any right or remedy of
Landlord upon any default by Tenant shall impair such right or remedy or be
construed as a waiver of such default. The receipt and acceptance by Landlord of
delinquent Rent shall not constitute a waiver of any other default; it shall
constitute only a waiver of timely payment for the particular Rent payment
involved.

     No act or conduct of Landlord, including, without limitation, the
acceptance of keys to the Premises, shall constitute an acceptance of the
surrender of the Premises by Tenant before the expiration of the Term. Only a
written notice from Landlord to Tenant shall constitute acceptance of the
surrender of the Premises and accomplish a termination of the lease.

     Landlord's consent to or approval of any act by Tenant requiring
Landlord's consent for approval shall not be deemed to waive or render
unnecessary Landlord's consent to or approval of any subsequent act by Tenant.
Any waiver by Landlord of any default must be in writing and shall not be a
waiver of any other default concerning the same or any other provision of the
Lease.

The parties hereto have executed this Lease as of the dates set forth below.

Landlord:

CHEYENNE INVESTMENTS L.L.C.

By:     /s/ George K. Connor Mgr.
     --------------------------------
             George K. Connor

Title: Manager

Date:            4/29/99
      -------------------------------

By:
     --------------------------------

Title:
       ------------------------------

Date:
      -------------------------------

Tenant: MGC COMMUNICATIONS, INC., A Nevada Corporation

By:      /s/ ???? J. Montgomery
    ---------------------------------
             ???? J. Montgomery

Title: President & CEO

Date:            4/29/99
      -------------------------------

By:
    ---------------------------------

Title:
       ------------------------------

Date: -------------------------------

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                            FIRST AMENDMENT TO LEASE

This First Amendment to Lease is attached to and made a part of that certain
Lease dated July 01, 1997 by and between Cheyenne Investments, LLC, a Nevada
Limited Liability Company, ("Landlord") and MGC Communications, Inc., a Nevada
Corporation ("Tenant").

The above mentioned Lease is amended as follows:

PREMISES

(1)  The number Thirty Two Thousand, Four Hundred Fifty square feet (32,450) of
     Rentable area is hereby submitted for the number Twenty Four Thousand, One
     Hundred Twenty Five square feet (24,125) of Rentable area as found in
     Paragraph 2,(l).

BASE MONTHLY RENT

(2)  The sum Fifty Three Thousand Five Hundred Forty Two and 50/100 Dollars
     ($53,542.50) is hereby substituted for the sum Thirty Nine Thousand Eight
     Hundred Six and 25/100 Dollars ($39,806.25) as found in Paragraph 2,(j).

Save and except as amended hereby, said lease shall remain unmodified and in
full force and effect.

IN WITNESS WHEREOF, Landlord and Tenant have signed this First Amendment to
Lease this   day of May, 1998.

LANDLORD:                                                  TENANT:

____________________________                    _______________________________
Cheyenne Investments, LLC                       MGC Communications, Inc.
A Limited Liability Company                     A Nevada Corporation

By: ??????? K. Connor                             By:  N.J. Montgomery
____________________________                         ___________________________

Title:  Manager                                 Title:  President
       _____________________                            ________________________
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                           SECOND AMENDMENT TO LEASE

This Second Amendment to Lease is attached to and made part of that certain
Lease dated July 1, 1997 by and between Cheyenne Investments, LLC, a Nevada
Limited Liability Company, ("Landlord") and MGC Communications, Inc., a Nevada
Corporation ("Tenant").

The above mentioned Lease is amended as follows:

ADDITIONAL RENTABLE AREA

     1)  Approximately Three Thousand Three Hundred Thirteen (3,313) square
         feet of Rentable Area, located in building B, Suite 7, at 3291 N.
         Buffalo Drive, Las Vegas, Nevada 89129.

     2)  The Base Monthly Rent for the additional square footage is Five
         Thousand Six Hundred Three and 11/100 Dollars ($5,603.11).

IN WITNESS WHEREOF, Landlord and Tenant have signed this Second Amendment to
Lease this 29th day of December, 1998.

LANDLORD:                                            TENANT:

Cheyenne Investments, LLC                            MGC Communications, Inc.
A Limited Liability Company                          A Nevada Corporation

By: /s/                                              By: /s/
   ------------------------                              ----------------------

Title:                                               Title: President & CEO
      ---------------------                                 -------------------

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