Greek politics continue to add uncertainty to the process. After the government on Wednesday released details of the austerity package — including raising the retirement age by two years, to 67; cutting salaries and pensions, and increasing taxes — the country’s labor unions responded by announcing a 48-hour strike next week when the parliamentary vote is expected to be held. The Democratic Left, the smallest member of Greece’s shaky three-party coalition government, has said it will not give its full support to the budget package if it includes changes to labor laws that the party opposes.

Adding to the political tension, the Parliament on Wednesday passed only narrowly a bill aimed at speeding the process of raising money by selling publicly owned Greek assets. Several members of Parliament from the Democratic Left and the other coalition partner, the Socialists, voted against the measure, and the leaders of the parties abstained. Afterward the leader of the Socialists, Evangelos Venizelos, hastily convened his party’s members of Parliament for an emergency meeting, in an apparent effort to contain dissent ahead of the vote next week on the budget package.

But Greece, in perhaps the most dire circumstances of the 17 members of the euro zone, is hardly alone in its economic problems. Data released Wednesday by the European Union indicated that euro zone unemployment set another record in September, with 18.49 million people out of work.

The jobless rate in the 17-nation currency union ticked up to 11.6 percent from 11.5 percent in August, according to Eurostat, the E.U.’s statistical agency. The August figure, which had itself been a record level for the euro zone, was revised upward from the 11.4 percent initially reported.

Meanwhile, in Portugal on Wednesday, the Parliament passed the biggest tax increases in modern Portuguese history in an effort to meet the budget targets of its European bailout program. While the nation’s center-right ruling coalition supports the tax increases, the opposition Socialists are challenging them in court.