1 Exhibit 23 CONSENT OF INDEPENDENT ACCOUNTANTS ---------------------------------- We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (File Nos. 333-70761, 333-29483 and 333-90231) and Form S-8 (File Nos. 333-69895 and 33-67962) of Ohio Casualty Corporation of our report dated February 3, 2000 relating to the financial statements and financial statement schedules, which appears in this Form 10-K. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Cincinnati, Ohio March 10, 2000 73