Disruption in the public service is set to intensify after the Civil and Public Services Union served notice of selective strike action from 15 March in protest at the pay cuts for state employees.
The union, which represents lower paid civil servants, has also served notice of a four-week ban on overtime effective from the same date.
It is understood areas that would be particularly badly affected by this escalation would include social welfare offices, the passport office, and the Department of Education's exams branch.
CPSU General Secretary Blair Horan warned that if anyone was removed from the payroll, the union would mount pickets.
Meanwhile, disruption continued across the public service in the work-to-rule, which is now over seven weeks old in some areas.
In the Oireachtas, unions blocked phone calls and emails this afternoon.
The Public Services Committee of the Irish Congress of Trade Unions will meet on Monday to consider how and when unions will escalate their campaign to reverse the Government pay cuts.
A spokesperson for the Department of Finance said that the outcome of that meeting will be reviewed.
