A manufacturing firm has said it plans to cut up to 42 jobs in Shrewsbury.
Doncasters Group Ltd said it was considering cutting posts at Doncasters Aerospace Components as a result of "challenging" trading conditions.
The firm said it would look for voluntary redundancies at the Whitchurch Road site where possible.
The Unite union said it accepted there were global pressures but found the cuts "hard to understand" because the site had been making a profit.
The company said employees had been informed and a consultation period involving Unite representatives had begun.
Damon Harvie, general manager at Doncasters Aerospace Components, said: "Trading conditions in the global aerospace and industrial gas turbine markets continue to be challenging.
"Following a review of forecasts for 2011, it's clear that, while we remain optimistic about mid-to-long term growth opportunities, it is not possible to maintain current employment levels.
"Where possible, we will look to make reductions through voluntary redundancies and will do all we can to support employees during the process."
Mickey Tuff, from Unite, said: "There's a lot of investment taken place on the Shrewsbury site... and the company has been showing a profit from the Shrewsbury site, so we find it hard to understand.
"We accept that there's global pressures from elsewhere.
"But we find it hard that this information has been announced at this time of the year as well."