ATHENS — The commissioner for monetary affairs at the European Union, Olli Rehn, said on Monday that austerity measures announced by the Greek government to stave off a mounting fiscal crisis were “in the right direction” but not adequate to reduce a bloated budget deficit by 4 percent this year and tackle a debt crisis threatening the euro zone.

After talks with government and central bank officials in Athens, Mr. Rehn reassured Greece of the European Commission’s support for its efforts to revive the reeling economy, but he stopped short of offering an emergency aid package.

He also called for additional austerity measures, in addition to the wage freezes and tax increases already announced by the Socialist government in Greece, but he did not specify what form these measures should take. “I want to encourage the government to announce additional measures,” he said.

“Either you control your debt, or your debt will control your economy,” he added.

“This is a crucial moment for your country,” Mr. Rehn said. “Do not take these measures to please Brussels or other European partners but for the future of your country, for your schools and hospitals.”