Seven Tesco stores have voted against joining industrial action over contracts for long-serving workers hired before 1996.
In a statement, Tesco Ireland said only one store voted in favour of the action accepting Mandate union's call for pickets.
Last night, six out of ten Tesco stores also voted against joining industrial action.
Tesco has reiterated its call on Mandate to "urgently re-think its divisive strike" following the latest votes by Tesco stores.
Mandate said that in total, 21 Tesco stores have now voted to take part in the action.
Tesco wants to move 250 staff recruited before 1996 onto less favourable contracts but Mandate insists the change would hit workers in terms of both pay and conditions.
So far all stores have remained open, despite the pickets.
