Greek Prime Minister George Papandreou has warned the country to be prepared for a new round of austerity measures.
"The measures we must take, which are economic measures, are necessary for the protection of our country," said Mr Papandreou.
It comes as debt the European Union (EU) discusses details of an emergency plan to help tackle Greece's crippling.
Euro zone finance ministers have been holding conference calls to discuss the crisis this weekend.
Patriotic duty .
Greece's education minister, Anna Diamantopoulou said the "final" result of the negotiations between Greece, the International Monetary Fund (IMF) and the EU would be announced on Sunday.
Details of a new series of cuts and tax rises are expected to be demanded of Greece after the completion of negotiations over the size and detail of therescue package for the country.
The Greek government says it needs a loan deal 19 May by default to avoid a devastating debt.
A major concern has been the German portion of the rescue package. Ahead of a crucial regional election on May 9, pressure had been mounting on Chancellor Angela Merkel to involve private banks and companies in the bail-out fund.
Now it appears that a grouping of German banks and other companies are prepared to assist in the bail-out payments. The move has not yet been confirmed by the parties involved, but movement is expected over the weekend.
Public opinion and politicians across the political spectrum Had opposed the idea that the entirety Of the bail-out would be funded by taxpayer money.
On Friday, Greek Prime Minister George Papandreou told the country's parliament that the pain he was about to inflict on the nation, as part of the conditions of obtaining the bail-out cash, as necessary so "we can stand firmly on our feet".
"It is a patriotic duty to undertake this, with whatever political cost, which is faced with the tiny national cost of inaction ... and indecision," he said.
The government is not releasing details of its programs, yet mooted, and is probably waiting until after the annual May Day demonstrations.
But there have already been angry protests over what might be contained in the forthcoming austerity packages, with demonstrations on Friday evening outside the Greek finance ministry.
Public deficit
Any further austerity measures limit would be in addition to an already-proposed drive Aimed at reducing the nation's public deficit, which is more than four times bigger than the EU.
Public deficit .
Any further austerity measures limit would be in addition to an already-proposed drive Aimed at reducing the nation's public deficit, which is more than four times bigger than the EU.
Union officials claim that as part of the new tranche, the IMF wants to raise sales taxes Athens, scrap bonuses amounting to two extra months of pay in the public sector, and accept a three-year pay freeze.
The union officials then claim that by next year, the IMF and the EU want Greece to shed 10 percentage points from the public deficit that reached 13.6% of output in 2009.
It was also reported in the Financial Times in London on Friday that another measure would include raising the retirement age from an average of 53 to 67th
Referendum call
"Have you understood that that these measures are being recommended to you are measures of destruction?" the head of the Left Coalition SYRIZA, a small left-wing party, Alexis Tsipras, Greek Prime Minister George Papandreou asked and fellow lawmakers.
"There is no other choice, ask for the verdict of the Greek people, call a referendum," he added.
In the face of mounting opposition to the budget cuts, Mr. Papandreou insisted that the poor must not suffer disproportionately because of the austerity drive.
"We are holding tough negotiations to protect what we can for the weak and the middle class in our country," he said.
He said spending on health care would continue, but that corruption would be tackled in the Sector.
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