Unions are to undertake a risk assessment before staff can be given the go ahead to operate a new €800,000 printer installed in the Oireachtas.
Staff say the printer cannot be used until a health and safety audit has been carried out.
The Public Accounts Committee (PAC) is to examine how more than €1 million was spent on the machine - including installation works of €230,000.
The union representing workers, SIPTU says they are 'in discussions with management' on the additional demands and skills which are required to operate the machine.
SIPTU Sector Organiser, Jane Boushell, said: "There are also a number of ongoing health and safety risk assessments which are yet to be concluded in relation to the operation of the new equipment.
"While these discussions and assessments are ongoing our members and their representatives will not be commenting any further."
It has been confirmed that the Clerk of the Dáil Peter Finnegan has commissioned an investigation into the spend on the printer.
