What is appropriate between a mother and child is inappropriate between employer and employee. To get the concept in a different way, we invite you to think of the walls around a castle. People live inside the castle. There is a moat around the castle with water and other obstacles inside it. There is a bridge across the moat that leads to a drawbridge.
People use the drawbridge to enter or leave the castle.
There is a trained guardsman at the drawbridge. He knows how to operate the mechanism that raises or lowers the drawbridge. He knows who to let in, and what to let in. The guardsman knows who are enemies of those who live in the castle. He knows his job so well that people inside the castle are often unaware that he s even there.