IAIN Duncan Smith lashed out at graduates who consider themselves "too good" to stack supermarket shelves as he vowed not to back down after a flagship back-to-work scheme was ruled legally flawed.

The Work and Pensions Secretary has tabled emergency regulations to deal with a Court of Appeal decision that the rules of the work experience scheme were unclear.

He also issued a direct rebuke to university graduate Cait Reilly, 24, from Birmingham, who challenged having to work for nothing at Poundland or face losing jobless benefits.

"You have to learn early that if you commit to something you do it," he told BBC1's Andrew Marr Show.

Denying claims of "slave labour", he said: "She was paid Jobseeker's Allowance by the taxpayer to do this.

"Most young people love this programme and I am sorry but there are a group of people out there who think they are too good for this kind of stuff."

Former Tesco boss Sir Terry Leahy started his career at the retailer stacking shelves, pointed out Mr Duncan Smith.

Lord Justice Pill, Lady Justice Black and Sir Stanley Burnton unanimously agreed the 2011 regulations failed to give the unemployed enough information, especially about sanctions for refusing jobs under the scheme.

Mr Duncan Smith dismissed the court ruling as "rubbish", adding: "People who think it is their right to take benefit and do nothing for it – those days are over."