Talk Talk have announced that 575 jobs are to go at their call centre in Co Waterford.
Staff were informed at a meeting with management at the facility this afternoon that operations at the centre in Waterford City will begin winding down early next month.
Today's announcement will come as a major blow to the south-east of the country where Talk Talk is one of the largest employers in the region.
Management at the British phone and broadband company told the 575 staff this afternoon that all roles in the call centre are being transferred to the UK.
A 30-day consultation and transition period starts tomorrow with operations winding down by the start of October.
The Social Protection Minister, Joan Burton, has said the Government will be in touch with the affected workers.
Local Sinn Féin Senator David Cullinane has said the south-east is now facing a crisis situation with today's news coming on the back of other significant job losses in recent years at firms including Waterford Crystal.