The number of benefit payments suspended since a tougher regime was introduced last year has risen by 11%, the Department for Work and Pensions said.
Jobseeker's allowance claimants who failed to do enough to find work, turned down jobs or have not turned up to appointments had their payments suspended 580,000 times between October 2012 and June, new figures showed.
Around 400,000 people were involved - with some having their benefits suspended more than once.
The most common reason for a sanction was a failure to actively look for work.
Some 11 per cent of benefit payments have been suspended since a tougher regime was introduced - check what has changed and how to claim.
Charities claim society's most vulnerable bear the brunt of the welfare reforms as new figures show a rise in benefit payment suspensions.