Canadian-based aerospace company Bombardier has announced it is cutting 5,000 jobs.
It is believed around half of the staff cuts will be at plants in Quebec, Canada.
Bombardier employs around 4,000 workers at its plants in east Belfast, but it is unclear if jobs there will be affected.
In July, the British Chancellor Phillip Hammond promised £12m of new government funding to the plane manufacturer to secure jobs at its Belfast factory.
There was uncertainty for workers in Belfast last year after manufacturing rivals Boeing complained about the firm selling its CSeries jets to Delta Airlines below cost price.
The International Trade Commission (ITC) in the US ruled against Boeing and in favour of Bombardier in January.