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                                                                 Exhibit 10.25.1


                     AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT


        Amendment No. 1 dated as of February 1, 2000 (the "Amendment") to the
Employment Agreement and any exhibits thereto (the "Agreement") by and between
Universal Access, Inc., a Delaware corporation (the "Company") and Kenneth A.
Napier (the "Employee"). Any capitalized terms not defined herein shall have the
meanings assigned to those terms in the Agreement.


                                    RECITALS

        A. Company and Employee entered into the Agreement on July 1, 1999.

        B. Company and Employee desire to amend the Agreement to reflect certain
changes agreed to by the Company and the Employee.

        NOW, THEREFORE, in consideration of the mutual covenants and agreements
hereinafter set forth, and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, it is hereby agreed as
follows:

        1. All references in the Agreement to "Executive Vice President of
Client Services" shall be deleted and replaced by references to "Executive Vice
President, Operations".

        2. Section 6.3 of the Agreement is hereby deleted in its entirety and
replaced by the following:

                6.3 Entire Agreement; Amendments, Etc. This Agreement and the
        Indemnification Agreement dated as of January 7, 2000 between the
        Company and Employee (as the Indemnification Agreement may be amended,
        restated or otherwise modified) contain the entire agreement and
        understanding of the parties hereto, and supersede all prior agreements
        and understandings relating to the subject matter hereof and thereof.
        Except as provided in Section 4.4(b), no modification, amendment, waiver
        or alteration of this Agreement or any provision or term hereof shall in
        any event be effective unless the same shall be in writing, executed by
        both parties hereto, and any waiver so given shall be effective only in
        the specific instance and for the specific purpose for which given.


        3. Miscellaneous. Upon the execution and delivery of this Amendment, the
Agreement shall be amended and supplemented as set forth herein, as fully and
with the same effect as if the amendments and supplements made hereby were set
forth in the Agreement as of the date hereof. This Amendment and the Agreement
shall henceforth be read, taken and construed as one and the same instrument,
but this Amendment shall not operate so as to render invalid or improper any
action previously taken under this Agreement.


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        IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed as of February 1, 2000.


               COMPANY:                     UNIVERSAL ACCESS, INC.,
                                            a Delaware corporation


                                            By:    /s/ PATRICK C. SHUTT
                                                   ------------------------
                                            Name:  Patrick C. Shutt
                                            Title: President and CEO


               EMPLOYEE:                    By:    /s/ KENNETH A. NAPIER
                                                   ------------------------
                                                   Kenneth A. Napier