A BBC investigation has heard claims of seriously ill patients being told they are fit enough to work and denied benefit payments.
Two former doctors for the private healthcare company Atos, which carries out the medical assessments have expressed concerns that the checks are being done too quickly and that the system is biased towards declaring people fit for work.
During the investigation, we've heard claims that terminally ill patients are being told to attend back-to-work interviews while they apply for the new benefit.
We also heard concerns that the medicals are declaring seriously ill people as fit enough to go to work.
One of the patients we spoke to was Maureen Leitch. She says she was called in for a medical assessment just a few weeks after undergoing chemotherapy and radiotherapy for vulval cancer.
She was declared fit for work and told she wasn't entitled to ESA. Read more>>