EXHIBIT 24 LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 26, 1999 /S/ RICHARD L. ANTONINI Richard L. Antonini LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ JOHN D. BOYLES John D. Boyles LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 23, 1999 /S/ WILLIAM P. CRAWFORD William P. Crawford LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ RICHARD M. DEVOS, JR. Richard M. DeVos, Jr. LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ WILLIAM G. GONZALEZ William G. Gonzalez LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ JAMES P. HACKETT James P. Hackett LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 19, 1999 /S/ ERINA HANKA Erina Hanka LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 18, 1999 /S/ EARL D. HOLTON Earl D. Holton LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 18, 1999 /S/ MICHAEL J. JANDERNOA Michael J. Jandernoa LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ KEVIN T. KABAT Kevin T. Kabat LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 18, 1999 /S/ FRED P. KELLER Fred P. Keller LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 24, 1999 /S/ JOHN P. KELLER John P. Keller LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 16, 1999 /S/ HENDRIK G. MEIJER Hendrik G. Meijer LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 18, 1999 /S/ PERCY A. PIERRE Percy A. Pierre LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 19, 1999 /S/ MARILYN J. SCHLACK Marilyn J. Schlack LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 17, 1999 /S/ PETER F. SECCHIA Peter F. Secchia LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 17, 1999 /S/ DAVID J. WAGNER David J. Wagner LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 18, 1999 /S/ MARGARET SELLERS WALKER Margaret Sellers Walker LIMITED POWER OF ATTORNEY The undersigned, in his or her capacity as a director or officer of Old Kent Financial Corporation, does hereby appoint DAVID J. WAGNER, ROBERT H. WARRINGTON, MARK F. FURLONG and MARY E. TUUK, and any of them severally, his or her attorney or attorneys with full power of substitution to execute in his or her name, in his or her capacity as a director or officer, or both, as the case may be, of Old Kent Financial Corporation, a Form S-4 Registration Statement of Old Kent Financial Corporation relating to its shares of Common Stock, $1 par value, to be issued pursuant to the Agreement and Plan of Merger between CFSB Bancorp, Inc. and Old Kent Financial Corporation dated as of February 24, 1999, as that Agreement and Plan of Merger may be amended from time to time, any and all amendments and supplements to such Registration Statement and post-effective amendments and supplements thereto, and to file the same with all exhibits thereto and all other documents in connection therewith with the Securities and Exchange Commission. Dated: March 15, 1999 /S/ ROBERT H. WARRINGTON Robert H. Warrington