By Victoria Waldersee and Christina Amann WOLFSBURG, Germany (Reuters) -Volkswagen workers said its management had one last chance to compromise on Monday or risk strikes on a scale not previously seen by the German carmaker,

Last week's strikes at VW's four carmaking factories are estimated to have cost Volkswagen just under 40,000 euros ($42,308) per minute.

Volkswagen employees again left their workplaces during a strike against the company's controversial plans. Concurrent talks did not achieve a breakthrough, and labor unions threatened a serious escalation.

Volkswagen employees departed from their workplaces again as part of a strike against the company's controversial plans. Concurrently, discussions were held but failed to achieve a breakthrough. Trade unions are warning of a serious escalation.

Tens of thousands of Volkswagen workers walked out on Monday in the second round of strikes in an escalating conflict between unions and management over the German carmaker’s drastic savings plans. Employees gathered outside Volkswagen’s flagship plant in Wolfsburg as the strike started,