Greek Parliament takes up 'bailout' budget Workers demonstrate against new austerity measures outside the parliament in Athens, Greece on November 10. The Greek Parliament must approve the budget to receive the next round of bailout funds Greece's budget contains steep austerity measures, including cuts to pay and pensions The austerity measures are seen as necessary to receive a bailout A disagreement among Greece's creditors may delay the bailout aid (CNN) -- The Greek Parliament will vote Sunday on whether to adopt the nation's 2013 budget containing steep austerity cuts required for Greece to receive the next installment of a crucial economic bailout. The cuts have provoked ire among Greeks furious about the effects of multiple rounds of belt-tightening, which have resulted in cuts to pensions and pay. Greece has seen its unemployment soar to more than 25%. Even if the parliament approves the budget, a disagreement among its creditors may delay the delivery of the financial aid. Reports from Brussels and elsewhere suggest that European Union, the European Central Bank and the International Monetary Fund officials have been unable to reach an agreement on the release of the money. The EU's finance ministers are set to meet on Monday where the bailout funds for Greece, which is grappling with its fifth year of recession, is likely to top the agenda. Passage of the austerity cuts was needed for the payout of the next international bailout installment of 31.5 billion euros (about $40.2 billion), which the Greek government desperately needs to stay in operation. Without the aid, it said, it would run out of money by mid-November. The budget, if approved, contains reforms and fiscal measures worth 13.5 billion euros over the next two years. It will raise the retirement age from 65 to 67 and cut pensions on average between 5% and 15%. Some judges must take a 30% pay cut, for example. The austerity measures contained in the budget give the government the right to set the minimum wage as of April 2013. It also reduces the redundancy notice period -- the time given to workers to leave their jobs after being laid off -- and limits compensation for workers with more than 16 years of service, as well as allowing stores the right to ask employees to work more flexible hours. The measures just never stop. Every time, politicians say they are going to be the last measures ... they are never the last," Melina Grigoriadou, a 50-year-old married businesswoman with two children, told CNN last week. As lawmakers considered the austerity measures to be included in the draft budget, protesters in Athens threw Molotov cocktails and police fought back with tear gas outside the parliament as lawmakers prepared to vote. As many as 70,000 people took part in demonstration in Athens' central Syntagma Square, outside the parliament building, according to police estimates. CNN's Elinda Labropoulou and Laura Smith-Spark contributed to this report.