Some Universal Credit claimants face spending more than half their money on energy bills from January if no more help is announced.
Labour warned a single, childless claimant will spend 59% of their cash on electricity and gas from January when bills are projected to top £4,200 a year. From October to December the figure is 42%.
Couples with children would also be spending 24% of their payments on energy bills from October, Labour said.
