Bank employees earlier staged a two-hour walk-out, with unions saying that pension deposits at the now defunct Laiki bank totaling €27m ($34.7m) will be wiped out, while another €15m at the Bank of Cyprus will face losses of up to 60%.
Two of the country's banks are to be restructured in exchange for a €10bn ($12.8bn) bailout from the European Commission, European Central Bank and International Monetary Fund.
With one of the banks being wound down, retrenchments are expected, while the pension fund for more than 11 000 banking sector workers is also seen to be at risk.
Banks have been operating under strict capital controls since they reopened a week ago.
European Central Bank chief Mario Draghi conceded on Thursday that a failed attempt last month to tax small depositors in Cyprus as part of a bailout was "not smart".
Asked if it had been a mistake for the ECB to agree to the levy after Nicosia proposed it in negotiations, Draghi told reporters: "It was not a smart move and it was corrected the day after."
He insisted that the proposed levy on deposits under €100 000, which caused outrage in Cyprus and spooked financial markets, had never been part of the original ECB bailout proposals.