Govt concedes NDIS could be delayed

Labor is accusing the federal government of trying to "crab walk" away from the national disability insurance scheme after it conceded there could be delays in the delivery of the scheme.

Assistant Social Services Minister Mitch Fifield says the government is determined to deliver the scheme in full and on time, working to a target date of 2019.

However, there may be issues beyond its control that could slow down the delivery.

"There could be unforeseen issues beyond the Commonwealth's control which could affect the schedule," Senator Fifield told Sky News on Saturday.

"I think that's just a matter of logic."

Opposition Leader Bill Shorten has accused the government of trying to "crab walk" away from its election promise to deliver the NDIS in full and on time, labelling it a "disgrace".

Disability advocates have already warned they will unleash a major campaign against the Abbott government if the scheme is delayed.