Exhibit 23 Consent of Independent Accountants We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 33-69306; No. 33-62887; No. 333-05987; and No. 333-59941) of Michael Baker Corporation of our report dated June 13, 2000, relating to the financial statements of the Michael Baker Corporation Employee Stock Ownership Plan, which appears in this Form 11-K. /s/PricewaterhouseCoopers LLP - ----------------------------- PricewaterhouseCoopers LLP Pittsburgh, Pennsylvania June 21, 2000