Because formal channels are recognized as authoritative, it is typical for communication of policies, procedures, and other official announcements to adhere to them.

Formal Channels

Official pathways of communication within an organization that are recognized and sanctioned by it.

Authoritative

Being final or conclusive; a position of power where the holder is able to enforce rules or directives.

Policies

Formal guidelines or rules that govern actions and decision-making within an organization.