Government is investigating but watchdog calls it "highly unlikely" true scale of tragedy is clear.
Claims that people moving to the new benefits system would not lose out were false, influential committee finds.
"Patients and claimants are suffering and continue to suffer as long as these letters are sent out."
Charities fear new one-stop process will lead to more people losing payments.
Labour's Tom Watson described the job listing as "grotesque".
Household benefits are capped at £20,000 outside London.
One wheelchair user was forced to sofa-surf for a year after missing one Jobcentre appointment.
System to speed up claims of those with just weeks to live “has been removed”, charity says. DWP denies claim.
Demands for government to halt programme as its own data shows 'worryingly high' numbers drop off social security system
How the government's controversial Universal Credit system is already shaping the city, even before it launches.
Revealed: DWP directive masks extent of welfare system's reliance on charities, say critics.
'Some tell us they are going back because it might be easier.'
Campaigners say it is time to 'finally see an end to the highly damaging sanctions regime'.
Many claimants are having big chunks of their benefit deducted every month.
Confidential information is already shared with immigration enforcers.
Damning report says disability reassessments are destroying public trust.