Beer workers at the Carling plant in Burton-on-Trent, are to hold a strike ballot later this month.
The union Unite claims more than 400 staff at Molson Coors could be sacked after June 10, and reinstated on less pay.
The union says nearly 200 workers could lose as much as £9,000 a year in wages.
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The evening will be cloudy but it will gradually disperse during the night, leaving clear skies across the region.
A cold and dry night across the region with frost developing overnight.