EMPLOYEE WAS USING UTILITY KNIFE TO REMOVE PLASTIC WIRE TIES FROM WIRE BUNDLE ON A PIECE OF MOBILE EQUIPMENT. WHEN PLASTIC WAS CUT, UTILITY KNIFE CONTINUED MOVING CAUSING A CUT IN PALM OF LEFT HAND. FOUR STITCHES APPLIED. WIRE CUTTERS WERE AVAILABLE AND ALL EMPLOYEES WERE AWARE THAT UTILITY KNIVES ARE NOT TO BE USED. THIS WAS COMMUNICATED AS A LESSON TO ALL EMPLOYEES.