The Irish Congress of Trade Unions (ICTU) is due to hold a series of meetings this week to discuss its response to the Government's latest public spending cuts.
Last week, the Taoiseach Brian Cowen announced plans to impose a pension levy ranging from 3% to almost 10% on all public servants.
He also scrapped pay rises due under the social partnership process as part of a plan to cut €2bn from public spending this year.
Trade unions say they could not support the measures because the pension levy was too onerous for lower and middle-income public servants.