John Hancock Variable Series Trust I Michele G. Van Leer Chairman and Trustee [GRAPHIC OMITTED] July 2, 2001 Wellington Management Company, LLP 28 State Street Boston, MA 02109 Attn: Katy D. Burke Assistant Vice President Re: Sub-Investment Management Agreement dated as of April 20, 1998 ----------------------------------- Dear Ms. Burke: This letter will memorialize our mutual agreement to amend Schedule I to the above-referenced Sub-Investment Management Agreement relating to the High Yield Bond Portfolio, to adjust the current fee schedule, effective as of July 1, 2001. Attached is a revised copy of Schedule I which introduces a level 45 basis point charge on all Net Assets. Please substitute copies of the attached Schedule I for the old copies of Schedule I in your files. Kindly acknowledge receipt of this letter and the attachment, and indicate your agreement to the amendment of Schedule I, by signing and returning the duplicate of this letter. Thank you. JOHN HANCOCK JOHN HANCOCK VARIABLE LIFE INSURANCE COMPANY SERIES TRUST I By: /s/ ROBERT R. REITANO By:/s/ MICHELE G. VAN LEER --------------------- --------------------------- Robert R. Reitano Michele G. Van Leer Senior Vice President & Chairman and Trustee Chief Investment Strategist Received and agreed to: Wellington Management Company, LLP By: /s/ DUNCAN M. MCFARLAND ----------------------- Name: Duncan m. McFarland ----------------------------- Title: CEO, President , and Managing Partner SCHEDULE I (As of July 1, 2001) FEES ---- High Yield Bond - --------------- - -------------------------------------------------------------------------------- Current Net Assets Under Management Sub-Investment Management Fee - -------------------------------------------------------------------------------- On all Net Assets Forty Five (45) basis points (0.45%) - --------------------------------------------------------------------------------