Work Capability Assessment people on ESA said they had "ongoing concerns about the accuracy of the WCA". And in 2014, Atos announced that it had come to the conclusion that "the WCA is not working for claimants, for DWP or for Atos Healthcare". In November 2016, the United Nations Committee on the Rights of Persons with Disabilities published its report on the situation facing disabled people in the United Kingdom. Of the WCA, it said: In 2015, Iain Duncan Smith complained that the system gave doctors a "binary choice", not an opportunity to deliver a more nuanced opinion on claimants' fitness for work.
Criticism of the Work Capability Assessment Portes, has described the use of the WCA to reassess long-term recipients of sickness benefits as "the biggest single social policy failure of the last fifteen years". The WCA's designers acknowledged that being found fit for work and ineligible for sickness benefit could, in some circumstances, harm a recipient's physical or mental health. For this reason, one of the WCA's eligibility criteria — the descriptor Substantial Risk — applies where there is, on balance, more than a small risk of harm if the claimant were to be declared 'fit for work'. The deployment of the WCA since 2010 has been