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 associated statistically with the unexpected deaths of hundreds of people. There is evidence of harm in individual cases from coroners' reports, and from the DWP's own internal investigations into dozens of claimants' deaths. However, data suggesting that "thousands" of people have died has not withstood expert analysis. Officially, the DWP does not accept that the WCA or the way it has been carried out has caused any deaths. A committee from the United Nations wrote, with regard to 33 deaths investigated in secret by the DWP, that it was "not aware of any attempts at objective, thorough, open and impartial