Unions say they will fight to prevent compulsory redundancies at a north Worcestershire customer service centre which is to close in 2010.
Resolution has announced it is closing the old Britannic Insurance customer centre in Wythall, putting 450 jobs on the line.
The work will be transferred to offices in Glasgow and India.
Daryl Williams, from the Unite union said it was determined to fight compulsory redundancies.
He added: "In terms of the consultation that has taken place thus far locally with union reps, the company have been trailing this for many months, so it's no surprise.
"But I think the size and the scale of it will come as a surprise to many of our members."
The company said it was closing the Wythall site because it was too big.
It said that some workers would be re-employed by the company Capita and that redundancies would take place over the next three years.