The formal lines of authority from highest to lowest ranks are known as scalar chain principles.
According to Fayol, “Organisations should have a chain of authority” and communication that runs from top to bottom and should be followed by managers and the subordinates.
According to Fayol, this chain should not be violated in the normal course of formal communication. However if there is an emergency, Gang Plank is used for speedy communication as shown in the diagram.
Gang plank is a shorter route in a scalar chain which allows employees at the same level to communicate with each other directly.
Gang plank should be used only in case of emergency, to facilitate speedy coordination and to prevent any likely distortion of message.
