Miliband: Labour united against 'tax on strivers'
MPs will debate the coalition's plans to cap the annual rise in benefits to 1%, lower than the current inflation rate of 2.2%.
Ministers argue that it is unfair for payments to go up by a higher percentage than wages but Labour says the measure will actually hit working families and intend to oppose the move.
Party leader Ed Miliband said the government is not treating people fairly.