IG Metall said its members would down tools for a few hours a day after the auto giant and union leaders failed to agree on how to cut costs.

Volkswagen workers across Germany are ready to strike from early December, the IG Metall union said in a pamphlet circulated on Friday.

An agreement not to hold strikes ended on November 30. "Accordingly, strikes are possible and also necessary from the beginning of December," the union said. "Volkswagen will determine at the negotiating table how long and how hard the conflict will be - the VW workforce throughout the country is ready to strike," it added.

BERLIN (Reuters) -Workers at Volkswagen could go out on strike across Germany as soon as next week, the IG Metall union said in a notice on Friday, as a clash between labour and management over layoffs and plant closures escalates.

Volkswagen has rejected a proposal from labor representatives that they said could avert layoffs and factory closures. VW said it wouldn't have delivered the advertised savings. Strikes loom in the brewing labor dispute.

German Volkswagen employees have reached their limit. They are threatening a warning strike that could potentially escalate into a prolonged protest. On 21 November, after the third round of negotiations with the company's management ended in failure,

Volkswagen , under pressure by high costs and Chinese competition, brushed off union proposals for cost savings on Friday, just days ahead of planned walkouts meant to avoid unprecedented plant closures.