UNION leaders are accusing Vauxhall of "dumping" on British workers because of plans to cut 850 jobs at one of its factories.
Unions are holding talks with the company after it emerged that posts were being axed at the Ellesmere Port plant in Cheshire.
Vauxhall says a limited number of early retirement and separation packages are being offered, adding that compulsory redundancies aren't expected.
Sir Ken Jackson, general secretary of the Amicus union, says: "Ellesmere Port has a committed and highly-skilled workforce who deserve better treatment than this."
Sir Ken says an unfair share of cuts in capacity are being made at British plants.
Vauxhall is soon ending car production at Luton with the loss of 2,000 jobs and Sir Ken says British workers have more than played their part in cutting back production.
Ellesmere Port employs 4,500 workers building the Astra and, from this Spring, the Vectra following a huge investment in the plant.
A Vauxhall spokesman says: "Discussions continue to be held with the trade unions to improve Ellesmere Port's lean and flexible operations."
The spokesman says Vauxhall is also continuing to look at ways to work more closely with its supplier base in the area.
The spokesman adds: "Ellesmere Port is currently seeing the benefit of £200 million investment to build the new Vectra from the Spring for export across Europe."