Workers at a Mercedes-Benz supplier in Tuscaloosa have rejected a bid to join the United Auto Workers union.
Employees at turned down the UAW proposal by a vote of 86-to-62 on Thursday.
While UAW organizers urged workers to support unionization, a group of employees joined a group called Union-Free Faurecia to oppose the bid.
The company makes center consoles, instrument panels and other components for car interiors.
Workers at two other Mercedes suppliers in Cottondale voted to join the union last year. The Mercedes plant itself isn't unionized.
Amendment 7 on Alabama's ballot looks like a simple measure to preserve the right to a secret ballot. In reality, it injects voters into a battle between labor and management.
The ballot measure provides that Alabama citizens have a fundamental right to vote for public office and employee representation by secret ballot.
If passed, it would prohibit unions from organizing by card check, where they get more than half of the employees at a company to check a box on a card saying they want union representation.