Almost a million people who applied for sickness benefit have instead been found fit for work, according to figures published today.
A third (32%) of all new claimants for employment and support allowance (ESA) were assessed as being fit to work and capable of employment between October 2008 and March 2013 - totalling 980,400 people, the Department for Work and Pensions (DWP) said.
More than a million others withdrew their claims before reaching a face-to-face assessment - this can be because of individuals recovering and either returning to work, or claiming a benefit more appropriate to their situation.
A DWP spokesman said that reforming the benefits system is a key part of the Government's long-term economic plan to build a stronger economy.
ESA ensures support is provided for those unable to work while those declared fit are given help to find employment, he added.
Under the old system, 2.6 million people were on the old-style incapacity benefits when ESA was introduced in 2008.
In August 2010, 900,000 had been claiming the sickness benefit for more than a decade.
"With the right support, many people with an illness, health condition or disability can still fulfil their aspiration to get or stay in work, allowing them to provide for themselves and their family."
The employment rate for disabled people has increased gradually over the years to 45%, the spokesman said.
A decision on whether someone is well enough to work is taken by DWP decision makers based on all of the available evidence.
Many claimants will be assessed by an independent health professional as part of the process. All the supporting medical evidence from GPs and specialists is taken into account.
ESA is an income replacement benefit provided to people of working age who are too ill to work because of a health condition or disability.
Some 2.49 million people were on ESA and old-style incapacity benefits as of May 2013.
ESA replaced incapacity benefit, income support and severe disablement allowance for new claimants from October 2008.