"Those who do not already have a place for September are unlikely to find one now, or not in their first choice profession," she added.
Separately, research from the Prince's Trust and Cass Business School warned that young people in deprived areas would be hardest hit by the recession.
More than 450,000 people under 25-years-old in the UK claim jobseeker's allowance. In the past year the numbers of those claiming such benefits have increased by 80%, at an expense of £23m to the state, the report said.
"Britain's most vulnerable youngsters will be permanently damaged by the downturn, unless they receive the support they need," said Martina Milburn, chief executive of the Prince's Trust.
Many economists now predict the number of jobless individuals will tip above three million in 2010.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.