A report by the Center of Planning and Economic Research released Friday said the jobless rate will rise to 28.5 percent in 2013 and reach 30.4 percent in 2014.
"This is a particularly negative development, but it is also inevitable given the continuing reduction in economic activity," the report said.
The center predicts the economy will shrink by 4.09 percent this year, though the government forecasts a 4.5 percent reduction, ekathimerini.com reported Friday.
The government expects a 0.6 percent growth in 2014, while the report suggests a decrease of 0.55 percent.
The center predicts deflation of 0.18 percent this year and 0.12 percent in 2014, ekathimerini.com said.