In the debate on whether or not the Oxford comma is necessary, I say it is. (And will cut you if you disagree. Ok, not really.)
So what is the fuss about? The Oxford comma is the comma used before the coordinating conjunction “and” or “or” in a list of three or more items. It is a stylistic serial comma.
In a 2017 class action lawsuit involving diary drivers, labor disputes, and the Oxford comma (see what I did there?), a Maine court recently ruled in favor of the comma. Read all about it at The Write Life blog. Yes, this happened a couple of years ago, but it illustrates the comma’s important.