Sligo is among the locations being suggested by telecommunications company Eir as it moves to take back a call-centre contract involving 950 outsourced staff.
It comes as Eir has decided to end the contract with an Indian company, HCL Technologies.
Eir now intends to operate its call centre itself from premises in Cork and Limerick, which are to be extended, as well as at a newly revamped facility in Sligo.
However, the Communication Workers Union has accused Eir and HCL of failing to be upfront with workers when it comes to the future of their jobs, the exact numbers affected and the terms of exit packages.
Eir says it expects the handover from HCL to take about six months.
However, the CWU says its executive council has already authorised it to ballot for industrial action if terms offered to workers don’t meet expectations.