
A Maine court ruling in a case about overtime pay and dairy delivery didn’t come down to trucks, milk, or money. Instead, it hinged on one missing comma.
The serial comma, also known as the Oxford comma for its endorsement by the Oxford University Press style rulebook, is a comma used just before the coordinating conjunction (“and,” or “or,” for example) when three or more terms are listed. You’ll see it in the first sentence of this story—it’s the comma after “milk”—but you won’t find it in the Maine overtime rule at issue in the Oakhurst Dairy case. According to state law, the following types of activities are among those that don’t qualify for overtime pay:
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.
There, in the comma-less space between the words “shipment” and “or,” the fate of Kevin O’Connor v. Oakhurst Dairy was argued. Is packing (for shipment or distribution) a single activity that is exempt from overtime pay? Or are packing and distributing two different activities, and both exempt?
If lawmakers had used a serial comma, it would have been clear that distribution was an overtime-exempt activity on its own. But without the comma, wrote US appeals judge David J. Barron, the law is ambiguous as to whether distribution is a separate activity, or whether the whole last clause—”packing for shipment or distribution”—is one activity, meaning only the people who pack the dairy products are exempt. The drivers do distribute, but do not pack, the perishable food.

The debate over the serial comma has long raged and remains unresolved. Proponents of its use … say that, when listing things in writing, a comma before the last item is paramount. It separates the sentence “He ate dessert, fries, and ham” from “He ate dessert, fries and ham.” Opponents say that it’s redundant, aesthetically displeasing, and potentially more ambiguous.
Oakhurst, for its part, had argued that “distribution” was separate in the language of the law, meaning its drivers did not qualify for overtime.
In an impressively geeky retort, the drivers responded that all the other exempted activities were listed as gerunds, words ending with “-ing”: Canning, processing, preserving, freezing, drying, marketing, storing, packing. The word “distribution,” they argued, was therefore not intended to be one of the items in the list.
Taken from Quartz Media post. Please see original for complete story.