Tangerine, the UK's largest independent confectionery supplier, could be hit by strike action after union members voted against a new pay offer.
Ninety four of the 100 factory floor staff at Tangerine's main plant in Blackpool, which makes Mojo brand chews and own-label sweets, voted in favour of industrial action this week.
Ian Hodson, regional officer at the Bakers, Food and Allied Workers Union, said workers were not satisfied with the proposed 2.2% pay increase.
The plant was bought by Tangerine in 2006 from Burton's Foods, which paid workers more than Tangerine. The higher wage had been protected under a two-year deal that has expired.
A spokesman for Tangerine said it was aware of the vote but added that the union's next action was "not yet clear".