The details of the plan have been settled in negotiations here with officials of the European Union, the I.M.F. and the European Central Bank. Greek officials close to the discussions said the deal would include as much as 130 billion euros in aid over the next three years at reasonable interest rates. In return, the I.M.F. asked Greece to cut public sector spending by 8 billion euros in the 14 months after the plan was adopted. Economists called that provision crucial because past reform programs by the government have relied too much on overly optimistic assumptions about the collection of unpaid taxes.

Union and government officials said Greece had also pledged to raise its value-added tax to 25 percent, to freeze civil servants’ wages and to eliminate public sector bonuses amounting to two months’ pay. They said the government intended to increase taxes on fuel, tobacco and alcohol.

Among the most significant features of the plan, a Greek government official said, would be a measure making it easier for the government to lay off some of the many thousands of public sector workers, whose low levels of productivity and high wages are a big contributor to Greece’s debt problem. Until now, the government has not been able to lay off civil servants, whose employment rights are in effect constitutionally guaranteed.

Another reform high on the list is removing the state from the marketplace in crucial sectors like health care, transportation and energy and allowing private investment. Economists say that the liberalization of trucking routes — where a trucking license can cost up to $90,000 — and the health care industry would help bring down prices in these areas, which are among the highest in Europe.

Some analysts fear the austerity measures could push Greece into a deeper and prolonged recession and spur widespread social unrest.