120 jobs are under threat in Waterford in a row over the relocation of employees three miles from where they are currently working.
Waterford Stanley has issued protective notice to all its manufacturing workers following an escalation of the relocation dispute.
The firm is one of the country's oldest manufacturing companies and employs 180 people including sales and marketing staff at its factory at Bilberry on the banks of the River Suir in Waterford city.
The company wants to move production of its cookers and ranges to a premises on the IDA industrial estate three miles away.
The union representing most of the manufacturing staff, the TEEU, wants €2,300 for each employee for the relocation.
The company says it will not pay relocation money as it will cost the company at least €500,000.
The union says it will go to the Labour Court but there is a disagreement about the terms of reference for discussions.
RTÉ News understands the company, which is owned by AGA Rayburn, is considering moving production of its entire Waterford Stanley range to an existing site in Britain, where capacity is available.