The Unite Union will today start consultations with electronics giants Sharp after the firm's announcement it'll stop making solar panels at its factory in Wrexham.
Bosses have blamed "unavoidable market conditions" for their decision.
Two hundred and fifty posts will be shed. It also won't renew around 350 agency workers' contracts.
Microwave ovens will still be made there.
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Showers will be replaced by more persistent rain this evening, with some heavy outbreaks expected. The rain will become patchier overnight.
Mary Owen has been working at the school in Old Colwyn for 46 years and still loves her job as much now as she did at the very beginning.
The latest weather forecast for Wales.