Ford is to axe 850 jobs in the UK in a bid to cut costs.
The car giant said workers would be offered voluntary redundancy packages with 400-500 of the posts are set to go at the Transit plant in Southampton.
The company had already reduced production at that site with workers taking an extended Christmas break.
A recent pay deal agreed at the south coast site will also be renegotiated, management said.
Separately, workers at Vauxhall’s car plants in Ellesmere Port and Luton are taking a cut in pay after an agreement was reached to reduce their working hours.
Workers at Ellesmere Port have been told their working week will be reduced from 38 to 30 hours. Staff in Luton will also see their hours reduced from 38 to 34 per week.
A statement from Vauxhall said: “The working time reduction agreements have been reached following extensive talks between senior GM management representatives from across all GM’s European operations and senior trade union leaders.”