SCHEDULE 14A INFORMATION

                  Proxy Statement Pursuant to Section 14(a) of
            the Securities Exchange Act of 1934 (Amendment No.    )

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    / /  Soliciting Material Pursuant to Section 240.14a-12

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                                    ADDENDUM
                                       TO
                   GSI LUMONICS INC. MANAGEMENT PROXY CIRCULAR

     Please note the Percentage of Common Shares in the table on page 6 of the
Proxy Circular for Charles D. Winston, President, Chief Executive Officer and
Director should be 1.20%.

     Please note that the paragraph on page 18 of the Proxy Circular under the
caption "Audit Fees" should read as follows:

               The aggregate fees billed by Ernst & Young LLP for professional
          services rendered for the audit of the Company's annual financial
          statements for 2001 were $226,000.