Scott Morrison and Anthony Albanese will face off for the first time this election when they meet for a leaders' debate on Wednesday night.
The prime minister and opposition leader will go head-to-head in Brisbane where they will take questions from undecided voters.
It comes as both parties will use day 10 of the election campaign to focus on industrial relations.
The government has announced it would double the penalties courts can impose on construction unions, should it win office.
Penalties for serious offences such as unlawful industrial action, freedom of association or coercion will be increased to $88,000 for an individual and $444,000 for a union.
Attorney-General Michaelia Cash said the changes to the building and construction industry act would try to stamp out "bullying and intimidation" by the Construction, Forestry, Maritime, Mining and Energy Union.
"We are going to ensure that their behaviour, their unlawful behaviour on construction sites in Australia, they are held to account," she told the Nine Network.
"The current penalties they merely see as the cost of doing business. That is unacceptable. We need to ensure our construction industry in Australia is as productive as it can be."
Meanwhile, Labor has upped their attacks on the government on working conditions, arguing the coalition would bring back controversial workplace laws.
Opposition industrial relations spokesman Tony Burke said the government would scrap the better off overall test for workplace agreements.
"Mr Morrison is sharpening his knife to slash your pay and conditions," Mr Burke said.
Mr Burke says the legislative changes would result in a $14,000 a year pay cut for part-time disability care workers, $10,000 for retail managers doing night shifts and $7000 for a butcher working weekends.
"At the exact time that we need to get wages moving, Mr Morrison's answer is to provide a green light for pay cuts," he told the ABC.
"That's what the legislation did, that's why they couldn't get it through the parliament, and now in the election campaign, he's fessing up that if he gets a chance, it's all back on the table."
The prime minister is also expected to unveil a $50 million research partnership with the University of Adelaide, creating 1000 new jobs and developing 100 new defence products over the next four years, according to the Adelaide Advertiser.
The investment will come alongside a second $14.4 million announcement for an extra 480 internships for engineering students in an aim to get more women into defence jobs.
But Labor has accused the prime minister of letting the Pacific region become more unstable than at any time since World War II after the Solomon Islands inked a security deal with China.
The opposition's foreign affairs spokeswoman Penny Wong accused Mr Morrison of ignoring warnings and failing to engage with Pacific nations in a constructive manner.
"On Scott Morrison's watch, our region has become less secure, and the risks Australia faces have become much greater," Senator Wong told the ABC.
"What we see again is the same pattern of behaviour from Mr Morrison. He's gone missing.
"We have to listen to what they're saying. (And) one of the things Australia has been lacking on is genuineness when it comes to addressing climate change."
But while raising concerns about the pact, Foreign Minister Marise Payne said the criticism levelled at the government ignored that sovereign nations are able to make their own strategic decisions.
Treasury will also release the Pre-election Economic and Fiscal Outlook later on Wednesday.
Meanwhile, the West Australian reports Labor will officially launch its election campaign in Perth on Sunday May 1.
It will be the first time a federal campaign has been launched in WA by any party.
© AAP 2022