8-K

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				UNITED STATES
		     SECURITIES AND EXCHANGE COMMISSION
			  Washington, D. C.   20549

				  FORM 8-K

			       CURRENT REPORT
		     Pursuant to Section 13 or 15(d) of
		    The Securities Exchange Act of 1934

       Date of Report (Date of earliest event reported) June 30, 2005
							-------------

			   OHIO CASUALTY CORPORATION
	    (Exact name of registrant as specified in its charter)

	  OHIO                        0-5544                 31-0783294
(State or other jurisdiction        (Commission            (IRS Employer
      of incorporation)             File Number)         Identification No.)

		    9450 Seward Road, Fairfield, Ohio  45014
	      (Address of principal executive offices)   (Zip Code)

				 (513) 603-2400
	       (Registrant's telephone number, including area code)

				Not Applicable
	   (Former name or former address, if changed since last report)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of
the following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities Act
     (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule l4a-12 under the Exchange Act
     (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))




			       Page 1 of 4
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ITEM 1.01. Entry into a Material Definitive Agreement
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In connection with the appointment of Ralph S. Michael III described in Item
5.02 below and incorporated by reference into this Item 1.01, Ohio Casualty
Corporation (the "Corporation") will enter into a Change in Control agreement
(the "Change in Control Agreement") with Mr. Michael.  This Change in Control
Agreement will be substantially in the form of the Amended Change in Control
Agreement filed as exhibit 1(e) to the Form 10-K filed by the Corporation on
March 12, 2004.

ITEM 5.02. Appointment of Principal Officer
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On June 30, 2005, Ohio Casualty Corporation ("the Corporation") issued a
press release announcing the appointment of Ralph S. (Mike) Michael III as
President and Chief Operating Officer of the Company effective July 25, 2005.

Mr. Michael has served as Executive Vice President and Manager of Private
Asset Management for U.S. Bank N.A. since 2004 and as President of U.S. Bank,
Oregon from 2003 to 2004.  Mr. Michael has also held several other positions
in the banking industry.  In addition, he currently serves as a director of
Ohio Casualty Corporation, a position he will resign effective July 25, 2005.

In his new position as President and Chief Operating Officer, Mr. Michael
will be paid an annual base salary of $435,000.  He will receive an option to
purchase 42,000 stock options and a restricted share award for 15,000 shares,
both to be granted as of the first day of his employment at a fair market
value of the shares on such date.

Mr. Michael will also receive $130,500 in lieu of the amounts he forfeited
under the previous employer's compensation program and an opportunity to
participate in the Corporation's Long-Term Incentive Program and Annual
Incentive Program, subject to its terms and conditions of both programs.  In
addition, Mr. Michael will be eligible for payment of certain relocation
expenses to be incurred by him, including the commissions to be paid for the
sale of his current residence.

There is no family relationship between Mr. Michael and any other executive
officer or director of the Corporation, and there is no arrangement or
understanding under which he was appointed other than as described in this
Item 5.02 and Item 1.01 above.  There are no transactions to which the
Corporation or any of its subsidiaries is a party and in which Mr. Michael
has a material interest subject to disclosure under Item 404(a) of Regulation
S-K.

A copy of the press release announcing Mr. Michael's appointment is attached
as Exhibit 99 and hereby incorporated by reference into this Item 5.02.

ITEM 9.01. Financial Statements and Exhibits
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(c)   Exhibits

      Exhibit No.    Description
      ----------     -----------

	  99         Press release dated June 30, 2005 announcing the
		     appointment of Ralph S. (Mike) Michael III, and posted
		     on the Corporation's website at http://www.ocas.com.


			       Page 2 of 4





				SIGNATURE

	Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


					  OHIO CASUALTY CORPORATION
					  -------------------------
						 (Registrant)




July 5, 2005                              /s/ David L. Santez
					  ----------------------------------
					  David L. Santez, Assistant Vice
					  President, Associate General
					  Counsel and Assistant Secretary





				Page 3 of 4




			       Exhibit Index
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			 Current Report on Form 8-K
			    Dated June 30, 2005


Exhibit No.    Description
- ----------     -----------

    99         Press release dated June 30, 2005 announcing the appointment
	       of Ralph S. (Mike) Michael III, and posted on the
	       Corporation's website at http://www.ocas.com.





				Page 4 of 4

EX-99

								 Exhibit 99




Contacts:  Analyst contact:  Dennis E. McDaniel
	   Vice President, Investor Relations
	   513-603-2197
	   dennis.mcdaniel@ocas.com

	   Media contact:  Cindy L. Denney
	   Assistant Vice President, Corporate Communications
	   513-603-2074; cell phone: 703-7372
	   cindy.denney@ocas.com


For Immediate Release


		   THE OHIO CASUALTY INSURANCE COMPANY NAMES
		   NEW PRESIDENT AND CHIEF OPERATING OFFICER


FAIRFIELD, Ohio, June 30, 2005  --- The Ohio Casualty Insurance Company today
announced that Ralph S. (Mike) Michael III, 50, has been named president and
chief operating officer of the Company, effective July 25, 2005. Ohio
Casualty Corporation (NASDAQ: OCAS) is the holding company of The Ohio
Casualty Insurance Company.

Mr. Michael comes to Ohio Casualty from U.S. Bank, National Association,
where he was executive vice president and manager of Private Asset
Management. In addition, Mr. Michael currently serves as a director on the
Ohio Casualty Corporation Board of Directors, a position he will resign
effective July 25, 2005.

"We are extremely pleased that Mike has agreed to take on a new, expanded
role with our Company," commented Ohio Casualty Corporation President and CEO
Dan Carmichael, CPCU. "As an active board member since April 2002, Mike has
been a key contributor by providing excellent counsel and advice and playing
an instrumental role in our turnaround efforts. He has specifically
contributed as chair of the Finance Committee and as a member of the Audit
Committee, providing invaluable expertise and guidance on a number of crucial
financial initiatives. He brings to the table a wealth of related financial
services industry experience that will serve him well as he oversees our
insurance operations. Most notably, he is knowledgeable about the Company,
including its management team and many of our key agents; demonstrates
outstanding leadership skills; and has an extensive financial services
background, including demonstrated experience in managing the sales and
marketing of financial products and building strong customer relationships."




In addition to his most recent position with U.S. Bank, Mr. Michael also
served with that organization as executive vice president and manager of West
Commercial Banking and as president of U.S. Bank - Oregon. From 1979 to 2002,
he held numerous executive and management positions with PNC Financial
Services Group, Pittsburgh, PA.

A graduate of Stanford University (CA), where he received a bachelor's degree
in economics, Mr. Michael earned his master's degree in business
administration from the University of California at Los Angeles (UCLA)
Graduate School of Management.

Mr. Michael currently serves as a board member of Key Energy Services Inc.,
Integrated Alarm Services Group Inc., Cincinnati Bengals Inc. and Xavier
University (OH).

Digital photo available upon request

Corporate Profile
Ohio Casualty Corporation is the holding company of The Ohio Casualty
Insurance Company, which is one of six property-casualty subsidiary companies
that make up Ohio Casualty Group(R). The Ohio Casualty Insurance Company was
founded in 1919 and is licensed in 49 states. Ohio Casualty Group is ranked
48th among U.S. property/casualty insurance groups based on net premiums
written (Best's Review, July 2004). The Group's member companies write auto,
home and business insurance.  Ohio Casualty Corporation trades on the NASDAQ
Stock Market under the symbol OCAS and had assets of approximately $5.8
billion as of March 31, 2005.

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