Museum workers in Wales have announced an indefinite strike starting on Thursday of this week.
The decision came after a series of one-to-one meetings between workers and management began.
Workers were told that they had to accept limited compensation for the loss of extra weekend pay.
The other alternative management gave them was to face dismissal and then re-apply for their jobs without any compensation.
The members of the PCS union are fighting bosses’ plans to slash weekend premium pay rates for low-paid workers. Workers also struck last Saturday and Sunday, with protests in Cardiff and Swansea.
PCS Wales secretary Shavanah Taj said, “Museum management have upped the ante by refusing even to talk about improving their compensation offer and by bullying staff into signing away their rights to weekend pay.
“This week we are demonstrating how serious we are in our demands for a fair settlement.
“Management now need to show that they are equally serious about listening to their own staff.”