Workers have gone on strike at Tesco in Sligo today, in what could be the start of a nationwide action.
Pickets began from 5am at the store on O'Connell Street in the town until the store closes at 11pm.
Members of Mandate have downed tools, as they say the company's refused to engage with workers on pay and conditions.
Another picket will be held on Friday week, while Carrick-on-Shannon workers will strike on Saturday the 22nd of this month.
Divisional Organiser of the union's north-west division Ciaran Campbell says they felt Tesco didn't address their grievances: