EMPLOYEE WAS AT WAREHOUSE TO PICK UP A PULLEY TO PUT ON A BELT. PULLEY WAS STANDING UP ON ONE END. (THE PULLEY STANDS ABOUT 58 INCHES TALL) EMPLOYEE CLIMBED ON TOP OF PULLEY TO PUT A CHAIN ON IT. EMPLOYEE GOT DOWN TO GROUND AND FELT SOME BACK PAIN. ACCIDENT HAPPENED 4-7-01 WAS NOT REPORTED TILL 4-17-01.