Unions are locked in talks with Jaguar management in the hope of persuading them not to stop car production at the
Browns Lane factory in Coventry.
Workers were balloted this week on whether to take strike action and the result will be known in mid-December.
Jaguar says cuts are necessary to secure its future, as the firm is losing hundreds of millions of pounds.
Under the plans to end production in Coventry, there will be 400 voluntary redundancies and 425 jobs will be moved to the firm's Castle Bromwich factory in Birmingham.
Jaguar will also lose 750 mostly white-collar staff, as office work is merged with Land Rover.
Hundreds of people marched through Coventry last Saturday in protest at plans to end car assembly at the plant.