The number of people on the Live Register continued to rise in June, according to seasonally adjusted figures from the Central Statistics Office.
The increase of 2,900 brought the total to 446,800. It was the biggest monthly increase since July last year.
The unemployment rate in June was estimated at 14.2%, up from 14.1% last month. Men accounted for 2,000 of the monthly increase.
The headline figure, which does not take seasonal factors into account, rose by 17,001 to 457,948, which is the highest level since August last year.
The Live Register includes some part-time and seasonal workers and does not measure unemployment.
The number of people signing-on for more than a year increased by 10,300 in June.
The number of long-term claimants has risen by 36% over the past 12 months.
Long-term claimants now make up 40.8% of the total number of people on the Live Register.