Greek politicians have reacted angrily to proposals submitted by the government to creditors to solve the debt crisis.
European leaders have cautiously welcomed the proposals - which include halting early retirement, increasing VAT on certain items and upping tax contributions - with some suggesting a deal could be reached this week.
But the Greek parliament's deputy speaker, Alexis Mitropoulos, warned that the plans would be difficult to pass.
"I believe that this program as we see it ... is difficult to pass by us," he told Greek TV.
If parliament fails to approve the offer, the Greek Prime Minister Alexis Tsipras may be forced to call a snap election.
Greece has blinked first - but is it enough to save the country from bankruptcy?
Thousands of pro-euro demonstrators have gathered in Athens as negotiations appear to be moving Greece close to a bailout deal.
There has been optimism before, but new external pressures may now force a deal over the Greek debt crisis, writes Richard Edgar.