British Gas is proposing cutting 684 office-based jobs in Oldbury, as part of plans to "consolidate" its operations, the company has announced.
The firm would also close its office in the town.
Over the next 45 days the company will discuss the proposals and will consult with workers and unions.
If the cuts are confirmed, it says it will "explore redeployment opportunities" for staff who are affected.
I recognise that today’s announcement represents difficult news for our employees who may be affected. Our priority now is to support all those potentially impacted, and to ensure a fair and transparent consultation process, working with our people and their representatives. >
Brian Strutton, national officer of the GMB union, says the announcement "has come completely out of the blue".
The Oldbury office has been performing well, the staff there have been delivering everything asked of them and more. The news will be devastating for the workforce and the local community.