The Trades Union Congress (TUC) has called for more government investment in broadband provision.
According to the body, more state support is required in those areas of the UK where well-paid jobs are in short supply.
This, it said, is important because unsecured debt per household reached £13,200 last year - the highest figure since the start of the financial crisis.
Estimates from the TUC also suggest unsecured debt per household will pass the £15,000 mark before the end of the next parliament.
Frances O'Grady, General Secretary of the TUC, warned that this surge in household debt is "putting the economy in the danger zone".
She attributed the problem partly to a short supply of well-paid jobs in some parts of the country.
This, she said, means the winner of the next general election must "urgently deliver the higher wages Britain needs for sustainable growth".
Ms O'Grady flagged up state support for improved infrastructure as one positive step that could make a difference.
"Communities that lack good jobs today could thrive tomorrow if they get proper investment in training, transport links, broadband and decent housing," she commented.
Ms O'Grady added that the incoming government must also commit to boosting the minimum wage and ending pay restrictions for public servants such as nurses, firefighters and midwives.