760 jobs are to go at engineering firm FG Wilson in Northern Ireland.
The plant is moving its main production of generators from Belfast and Larne to China.
The loss is almost a quarter of its workforce there.
It will be completed by the end of this year across all 4 of its sites in the North.
The company announced a strategic evaluation of its small generator set business in June.
As a result a combination of salaried and production employees as well as agency workers are to be let go.
The company says employees will be offered voluntary redundancy allowing them to leave the company with an enhanced package.
The company has been part of the Electric Power Division of Caterpillar Inc. since 2005.
The parent company says it is responding to dampened demand from small generator set customers as a result of the on-going Eurozone problems and the continuing financial uncertainty in the global economy.
It is not known if the losses affect the Dublin operations of the firm.
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