Japan's seasonally adjusted unemployment rate is certain to hit 5 percent in an official report for July due out next week, government sources said Thursday.

It would be the first time that the figure has breached 5 percent since the government began reporting monthly jobless figures in 1953.

The jobless rates for both men and women has also probably worsened by about 0.1 percentage point in July to hit all-time highs, and the number of people out of work is expected to be about 3.3 million, a record for the month, the sources said.