One of Ireland's largest unions, which is representing craft workers on the Intel site, has lodged a claim for up to €30m in completion bonuses known as Payment in Lieu Of Notice payments.
The Intel project is one of the largest construction projects in the country and at its peak employed up to 5,000 people.
Last May, the Technical Engineering and Electrical Union wrote to the Construction Industry Federation, which represents around ten building contractors on the Intel site.
The TEEU sought PILON payments for all workers who were continuously employed on the site since 7 April 2014.
The CIF, which represents the contractors, has categorically rejected the claim.
Jean Winters of the CIF confirmed that the payments would total between €25m and €30m, as they range from €3,200 for those who had been working on site for three to six months, to €8,000 for those employed for more than 12 months.
Talks at the Labour Relations Commission last week failed to resolve the row, which is now expected to be referred to the Labour Court.
Intel has today confirmed that it is aware of the €30m claim by the TEEU.
A spokeswoman acknowledged that Intel funded PILON completion payments when a similar claim was made by workers in 2005.
The US multinational firm stressed that the current claim has been made not against Intel, but against construction contractors carrying out work on the Intel site.
The spokeswoman said that at present Intel is not directly engaged in the dispute, but it is monitoring developments.
She declined to comment when asked whether Intel was ruling out funding the PILON payments.
