Hundreds more jobs are set to be axed at Ellesmere Port's Vauxhall plant.
The firm announced that 400 jobs were to be slashed last October, due to reduced production levels.
But now workers have been told that the number of staff will have to be reduced by 700 by April, which is when the plant moves to a single shift.
By the end of the process the plant will have gone from around 1,900 workers in October to 1,200 this spring.
One member of staff at Vauxhall told our sister site the Daily Post they were called into a meeting this morning (Monday, January 8) where they were given the news.
French car maker PSA took over the Vauxhall brand last August, sparking fears about the impact on the Cheshire plant.
There are concerns from within the workforce that the whole operation could be lost within two years.
A Vauxhall spokesman said: "At a meeting held on Thursday 4 January 2018 between representatives from Vauxhall Motors and UNITE the Union, the company explained that although the initial voluntary separation programme at its Ellesmere Port plant announced in October (aligned to adjustment of production volumes in order to protect its future) has been successful, it needs to initiate a further voluntary programme for eligible employees of a further 250 heads in the period from April to the end of September 2018.
"The teams are conscious of the need to accelerate the recovery of plant productivity in order to meet the challenges ahead and as an important element of this recovery, this additional separation programme will support the plan move to a single production shift at Ellesmere Port during April 2018.
"The company is committed to continuing consultation with Employee Representatives in order to establish potential opportunities to minimise the impact of these proposed headcount reductions. This consultation will take place over a 45 day period in line with legal requirements.
"Vauxhall Management affirmed the company’s continued commitment to the Astra plant at Ellesmere Port. The company remains confident in the ability of the Ellesmere Port workforce to deliver the necessary improvements in financial performance."