Concerns are rising in the nation’s auto industry that a looming labor strike at Hyundai Motor may once again take a toll on the nation’s largest carmaker.

Stalled wage negotiations last year led to the costliest strike in its history, causing a production shortfall of more than 1 million vehicles and 11.6 trillion won ($10.4 billion) in lost sales.

On Tuesday, the Hyundai Motor union said three months of talks with management on the wage deal have collapsed, a move that may lead to a strike.

Kwon Oh-il, a spokesman for the Hyundai union, said 45,000 unionized workers plan to vote on Aug. 13 on whether to go on strike, which requires majority approval from union members.

The union demanded a hike of 130,498 won in basic salaries and an extension of the retirement age to 61, as well as other benefits.

Kwon said no major progress has been made on the wage deal, but added that the union can resume negotiations with the management if the company changes its position.

In April, parliament passed a bill that would raise the legal retirement age of South Korean workers to 60 beginning in 2016.

The carmaker also called for a quick resumption of negotiations, though it expressed regret over the union’s declaration of the collapse of negotiations.

(From news reports)