Housing benefit changes 'unfair and unworkable'
12 February 2014 Last updated at 07:00 GMT
Two thirds - 66% - of social sector tenants affected by benefit cuts for those with extra bedrooms were behind with rent after six months, according to a survey for the National Housing Federation.
It also suggested 38% were in debt because of the "unfair, unworkable" policy change - dubbed the "bedroom tax" by critics.
The government said it was "determined to support those who might need extra help through these necessary reforms".
Mike Sergeant reports.