EMPLOYEE WAS CHANGING THE OIL FILTER ON THE CRUSHER WHILE STANDING ON A STEP LADDER. INJURED WAS BELOW, HOLDING THE STEPLADDER AND A 5 GALLON PAIL. EMPLOYEE CHANGING OIL PULLED THE OIL PLUG TO THE DRAIN CANISTER AND THE OIL OVERSHOT THE PAIL AND SOME OIL GOT INTO INJURED'S EYES.