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.
More top news
Scattered showers, becoming more widespread.
Still rather windy. Blustery showers easing with clear spells developing.
ITV News Central's special series looks at a range of key election issues. In our first Central Issue debate, we look at the economy.