The Irish Congress of Trade Unions has urged all union members and "anyone who cares about decency at work" to support striking workers in Dunnes Stores, on Thursday April 2.
Congress General Secretary Patricia King said: 'this dispute is about decency at work and people's ability to earn a fair wage.
"It is not acceptable in 21st Century Ireland that any employer should effectively own the lives of workers by failing to provide security about working hours and certainty over their income.
"Many Dunnes" workers operate on minimum 15 hour contracts and have no idea what they might earn from week to week, or even how long they might be at work.
'that damages their capacity to earn a decent living and intrudes on every aspect of family life. It is simply wrong." Ms King said.
"Congress would urge all union members and anyone who cares about decency at work to respect the pickets and support the striking workers," she concluded.