INJURY WAS REPORTED AS A FIRST AID ON 6/20/01 & BECAME MEDICAL ON 9/27/01. THE EMPLOYEE WENT TO THE COMPANY CLINIC ON 9/27/01, WAS RETURNED TO FULL DUTY, X-RAYS WERE TAKEN AND WERE POSITIVE. WHILE CLIMBING UP ON LADDER, EMPLOYEE SLIPPED OFF STEP AND FELL ONTO BUTTOCKS.