PRINCIPLE: An employer is liable for the negligence of his employee. But an employer is not liable for the negligence of his employee if the victim of such negligence is one of his other employees. FACTS: 'A' and 'B' were working in a factory as unskilled labourers. A was carrying a basket of stones on his head. B was sitting on the ground. When A crossed B, all of a sudden a stone fell down from the basket and hit B on his head. B died immediately.