The New Yorker's Culture Desk:

Nothing, but nothing—profanity, transgender pronouns, apostrophe abuse—excites the passion of grammar geeks more than the serial, or Oxford, comma. People love it or hate it, and they are equally ferocious on both sides of the debate. Individual publications have guidelines that sink deep into the psyches of editors and writers. The Times, like most newspapers, does without the serial comma. At The New Yorker, it is a copy editor’s duty to deploy the serial comma, along with lots of other lip-smacking bits of punctuation, as a bulwark against barbarianism.

While advocates of the serial comma are happy for the truck drivers’ victory, it was actually the lack of said comma that won the day. Here are the facts of the case, for those who may have been pinned under a semicolon. According to Maine state law, workers are not entitled to overtime pay for the following activities: “The canning, processing, preserving, freezing, drying, marketing, storing, packing for shipment or distribution of: (1) Agricultural produce; (2) Meat and fish products; and (3) Perishable foods.”

The issue is that, without a comma after “shipment,” the “packing for shipment or distribution” is a single activity. Truck drivers do not pack food, either for shipment or for distribution; they drive trucks and deliver it. Therefore, these exemptions do not apply to drivers, and Oakhurst Dairy owes them some ten million dollars.