EE WAS WORKING TO CHANGE AN EMPTY GREASE CAN ON LUBE TRUCK. EE WAS USING A TWO-SIDED STOOL LADDER TO REACH THE TOP OF THE EMPTY CAN, AFTER REMOVING THE GREASE PUMP, EE WAS STEPPING FROM THE TO P LEVEL OF THE STOOL TO THE TOP STEP, HIS FOOT MISSED AND FELL TO THE GROUND. HE TRIED TO CATCH HIMSELF AND STRUCK HIS HAND AGAINST THE TRUCK, CAUSING A 1"" LACERATION INHIS RIGHT PALM.