The BlueOval SK plant, owned by a partnership of South Korea's SK On and Ford, is the latest battery battleground for the union.

Workers at a Ford Motor Co. joint-venture battery plant in Kentucky have formally asked the federal government to hold a vote on joining the United Auto Workers, the union said.

Shortly after announcing a union campaign at the BlueOval SK Battery Park in Glendale, workers have filed for an election to join the UAW.

A supermajority of workers at BlueOval SK filed a petition with the National Labor Relations Board for a vote to form their union with the UAW.

Workers at a Kentucky BlueOval SK Battery Park filed for an election to join the United Auto Workers union Tuesday, marking the new year’s first major union election petition filed in the South —and one that could foretell future union activity in Tennessee.

The United Auto Workers has filed for a union vote by workers at the BlueOval SK battery plant in Glendale — an action the company says is “premature” and “puts at risk the freedom and opportunities of our current and soon-to-be-hired Kentucky team members.

Workers at BlueOval SK (BOSK) in Kentucky have filed a petition with the National Labor Relations Board (NLRB) for a future unionization vote. A supermajority of workers at BlueOval SK Battery Park in Glendale,