The planned restructure of the Vale nickel plant in New Caledonia is expected to result in at least 100 employees losing their jobs.
Last year, the Brazilian owner announced that it was divesting itself of its 95-percent share in the plant while changing its operations.
Local media say talks with unions have resulted in reclassifying some positions and that of the 300 people affected about 125 will be dismissed.
The figure is not final and reports quote a union leader as saying the redeployments may lower it to about 100.
The Noumea Post said the exact figure would be known next month.
Vale has been incurring losses in the hundreds of millions of dollars and decided to pull out after earlier contemplating mothballing the plant.
It now plans to close the nickel refinery and to prioritise production of NHC, or nickel hydroxide cake, which Vale says is in great demand for batteries for electric vehicles.