An employee was operating a front end loader to load solid waste/refuse into trucks. The employee parked the front end loader parallel to a concrete wall. The employee exited the loader by stepping from the loader onto the concrete wall. The employee slipped off the concrete wall and fell to the ground. The employee suffered a laceration on the right side of his head, and dislocated his right shoulder. The employee was hospitalized for surgery to repair his dislocated right shoulder.