Volkswagen employees at a plant in Chattanooga have filed a petition with the National Labor Relations Board (NLRB) to hold a vote on whether workers will join the United Auto Workers (UAW) union.

“The milestone marks the first non-union auto plant to file for a union election among the dozens of auto plants where workers have been organizing in recent months,” UAW said in a press release. “The grassroots effort sprang up in the wake of the record victories for Big Three autoworkers in the UAW’s historic Stand Up Strike win.”

In February, the UAW said that a majority of the plant’s employees had signed pledge cards to vote for unionization.

“A majority of workers at Volkswagen’s Chattanooga, Tennessee plant have signed cards to join the UAW, less than sixty days after the workers announced their campaign to form a union at the German automaker’s only US assembly plant,” UAW said, as reported by The Tennessee Star.