Wyman-Gordon Birmingham factory closure proposed
Almost 90 jobs are under threat over proposals to close a Birmingham factory which makes engine parts.
Wyman-Gordon Ltd in Tyseley said it had not achieved "a sustainable... level of operation" and work could move to the US and the Czech Republic.
The firm said if the plans were to go ahead, it "would work hard to mitigate the impact" on its 89 employees.
The Unite union said it was "surprised" by proposals and was due to hold talks with the firm on Monday.
Unite regional officer Tim Parker said: "This is a short-sighted and wrong move, given the recent strong burst in manufacturing growth in the UK and the increasing high levels of productivity and foreign investment."
He said the union's aim was to convince the firm that the workers were "an extremely valuable asset" who deserve a secure future at the site.
The company said it would start consultation with its local trade union representatives, employee representatives and workers.