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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Heavy, thundery showers will clear northwards through the morning, allowing it to turn drier and brighter for many.
Heavy and thundery showers slowly moving north giving way to drier and brighter spells by the afternoon.
Residents in Kings Heath say they predicted an accident yesterday which left an elderly pedestrian critically injured.