He said he believed welfare reform - planned for National's second term - would help lift people out of poverty. So too would education policies.
Mr Key made the "growing underclass" a major feature of his 2008 campaign, raising the topic in both his 2007 and 2008 State of the Nation speeches and promising it was a priority, including tackling welfare dependency, crime, illiteracy, drugs and parenting skills.
He also visited McGehan Close, in Owairaka, Auckland, as an example of the type of community he wanted to help.
Yesterday, he denied that the Government had not acted, saying it had put in place initiatives across the board - including more flexible training for students, targeting early childhood education at Maori and Pacific communities, and health initiatives for poor regions such as immunisation programmes.
He said the Government had also done the best it could, in difficult times, to insulate people from the recession.