Nestle workers throughout Britain are being balloted for industrial action in a row over a pay freeze.
Members of the Unite, GMB and Usdaw unions are taking part in a postal “straw poll” asking them to consider a further ballot to begin a process of industrial action.
Nestle bosses rejected a claim for a 2.5 percent increase saying it would be irresponsible to raise wages in “tough times”.
Union spokesperson John Kirk said that workers had submitted a “reasonable pay claim” after accepting pay freezes in 2007 and 2008.
The current ballot will close on 23 April.