Margaret Hodge, who chairs the committee, has accused the DWP of making "poor decisions" at "considerable cost" to the taxpayer.
The report found that the department's decisions were overturned in nearly 40 per cent of appeals, and that Citizens' Advice had recorded a more than 80 per cent rise in the number of people asking for support on appeals in the last year alone.
More top news
Cash worth £8.9m has been stolen from cash machines across Japan in what is believed to have been a coordinated criminal operation.
Bubba the terrier-mix puppy was packed off to kick his drug habit after living with addict owners - but is well on the way to recovery.
Human remains from found at the crash site of EgyptAir flight MS804 point to an explosion on board the plane, an Egyptian official has said.