EE WAS REMOVING A PEGBOARD FROM A WALL WHILE ON AN EXTENSION LADDER ~10' ABOVE THE CONCRETE WAREHOUSE FLOOR. THE LADDER SLID OUT FROM UNDER HIM AND AS HE AND THE LADDER HIT THE FLOOR, HIS FORE HEAD MADE CONTACT WITH A RUNG ON THE LADDER. HE WAS DRIVEN TO THE EMERGENCY ROOM AND RECEIVED 6 SUTURES FOR THE CONTUSION/LACERATION.