Labour leaders at loss-making European car maker Opel have warned parent company General Motors
This would cost GM billions, Rainer Einenkel, head of the Bochum plant's works council said at a news conference on Saturday following a staff town hall meeting in the western German city of Bochum.
GM, which has been pushing Opel to lower costs by shifting production from high-wage countries in western Europe to emerging markets, may have to shoulder huge costs for severance pay and legal proceedings, said Einenkel.
Closing Bochum, a plant in the Ruhr industrial heartland that has been producing cars for 50 years could also severely damage Opel's brand, said Einenkel who also sits on the car maker's supervisory board.
The 20-member board met last Wednesday to discuss ways to move Opel into profit, but adjourned deliberations without agreement on painful restructuring steps.
Opel's Bochum factory emerged as symbol of Germany's post-war economic recovery after it started production of Opel Kadett coupe, a rival to the Volkswagen
Although General Motors has pledged not to close plants before the end of 2014, Einenkel said GM's demands centred on closing between two and three factories.
No factory is safe, he said.
Analysts say the car plants in Bochum and Ellesmere Port in northwest Britain are most at risk.
Opel's works council chief said GM would struggle to find an investor for Bochum, because the site also required a heavy investment to clean up the site, built on a former coal-mine.
(Reporting By Andreas Cremer)