THE EMPLOYEE WAS WALKING ACROSS A CONCRETE FLOOR INSIDE OF A BUILDING, TO GET A SAMPLE BAG. HIS RIGHT FOOT SLIPPED AND HE FELL CAUSING AN INJURY TO HIS LEFT KNEE. THE EMPLOYEE HAD JUST COME BA CK TO WORK AFTER HAVING KNEE SURGERY ON THE SAME KNEE (PERSONAL INJURY). THE EXTENT OF INJURY IS UNCERTAIN, BUT EMPLOYEE MAY HAVE TORN LIGAMENTS.