Clarity is in short supply across America, but no longer at dairy farms in Maine.

In 2014, you see, drivers for a dairy company in Portland, Maine sued their employer for overtime pay because a state law pertaining to overtime-pay exemptions failed to include the Oxford comma.

What is the Oxford comma?

It’s the final comma in a list of things, Grammarly explains. In Grammarly’s example, the Oxford comma appears after the word “eraser”: “Please bring me a pencil, eraser...