SIPTU and Fórsa union members are to protest outside the Taoiseach Micheál Martin's constituency office in Cork tomorrow.
It is due to growing concern about the future of up to 400 Local Employment Service and Job Club jobs across the country.
SIPTU's Adrian Kane said they have written to the Taoiseach calling on him to intervene in their dispute with the Department of Social Welfare over plans to put these services out to tender - services that have been provided by the community/non-profit sector for 25 years, Mr Kane said.
The Workplace Relations Commission (WRC) had requested all parties to attend exploratory talks to deal with the future provision of local employment services but the Department of Social Welfare has not taken up the invitation.
Mr Kane said weekly protests by up to a dozen members will continue until the Taoiseach intervenes and a process is found to resolve the issue.