One Nation vows to cut migration by 750,000 sparking fears for key industries including aged care

New policy has already attracted bipartisan condemnation with Labor warning it would damage construction, aged care and agriculture

One Nation says it will cut the number of temporary migrants in Australia by more than 750,000 over three years, targeting international students and the family members of skilled migrants in a “net-negative” plan.

But Labor has said it would cause sweeping damage to construction, health care, aged care and disability sectors, and the Liberals have cast doubt about whether any modelling underpinned the figure.

One Nation leader Pauline Hanson said the new policy, announced on Monday, would “reset” Australia’s immigration system and help ease pressure on housing and public services.

Temporary visa numbers would be returned to 2017 levels, under what Hanson says would represent a net-negative arrivals rate for the first three years. That would mean the negative overseas migration total would be 130,000 under the One Nation plan.

The announcement comes as both Labor and the Coalition consider new cuts to overseas arrivals, in an increasingly charged contest ahead of the next federal election. Hanson will hope her plan plays well ahead of the Victorian state election, due in November.

“Families are competing with hundreds of people for rental accommodation. Patients are stuck in ambulances because there are not enough hospital beds. Young Australians are being locked out of home ownership while wages and infrastructure fail to keep up.”

The policy also drive division within One Nation, with lower house MP David Farley previously expressing concern that big cuts to immigration could deny his electorate of Farrer the workers needed to care for elderly people and work on farms.

Hanson said One Nation would give “illegal migrants” three months to leave, with those who depart voluntarily given the ability to apply for visas in the future.

“Those who remain unlawfully after this period will be subject to immigration enforcement and a lifetime ban from re-entering Australia,” she said.

The Pacific Labour Mobility Scheme for agriculture would remain in place under One Nation’s plan, but temporary skilled migrants would lose the ability to apply for visas for family members.

“We will take back control of who comes here and how many we accept, train more Australians, restore living standards and put the safety and security of Australians first.”

Prime Minister Anthony Albanese and the opposition leader, Angus Taylor, have held talks on Labor’s delayed migration package in recent days. It is expected to further drive down net overseas migration.

But Labor has struggled to finalise the plan and delayed its announcement by more than a month.