"people who work in different functions hate each other." this is the corollary to

"people who work in different functions hate each other." this is the corollary to "Palermo’s law".

Corollary depicts an outcome that is the normal result of something different. You could state that your weight pick up is a corollary of the ongoing entry of a pastry shop over the road from your house. Thus, "people who work in different functions hate each other." this is the corollary to Palermo’s law.