Workers at the Gunstones bakery in Sheffield have voted overwhelmingly to reject a pay offer.
Bosses had offered them a 3.5 percent pay increase.
But members of the Bfawu union voted by 93 percent to reject the offer.
The workers are fighting an imposed pay freeze after bosses made 426 sackings. They struck for 48 hours last month.
Bosses initially refused to make an offer on pay.
They complained that they were paying money to staff in order to make them redundant.