Up to 90 jobs are at risk after sausage skin producer Devro announced plans to close one of its Scottish sites.
A period of consultation started on Tuesday for workers based in Bellshill, North Lanarkshire.
Devro, which supplies collagen casing for food, said a review of its manufacturing operations had concluded that the firm has "excess infrastructure".
It intends to increase the range of products made at its Moodiesburn site, also in North Lanarkshire, which recently received a £2 million investment.
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Chief executive Rutger Helbing said: "Scotland will remain strategically important to Devro's global operations.
"However, the collagen market is evolving and we must look at how we manage our business and stay competitive.
"Decisions like this are never easy. I know this will be an uncertain time for many colleagues, their families and the wider community.
"Our priority now is to ensure we have the right support in place for those who may be affected by these plans."
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