Labor leader Anthony Albanese will introduce a private member's bill designed to ensure workers doing the same job at the same workplace get the same pay.
Mr Albanese said companies were deliberately using labour hire firms that exploit casual workers to undermine job security and undercut wages.
The Newcastle Herald has reported extensively in recent years on attempts by Hunter mine workers to receive the same pay and conditions as their full-time colleagues.
Mr Albanese said the practice was increasingly being used in other industries such meat works, construction, hospitality and aged care.
"It's a rort that has to end," he said.
"That's why Labor committed earlier this year to implementing a "same job, same pay" policy as part of our Secure Australian Jobs Plan.
"Under a Labor government workers employed through labour hire companies will receive no less than workers employed directly."
Labor is pushing the Morrison Government to adopt its policy prior to next year's federal election.
"Scott Morrison talks a big game about being on the side of miners. But just a few months ago he joined with the labour hire firms in a high court case to maintain these rorts. He wasted hundreds of thousands of dollars of taxpayers' money to ensure casuals can be ripped off," Mr Albanese said.
"He also teamed up with One Nation to pass IR changes that extinguish the rights of casual workers in all industries."
Under the government scheme passed earlier this year employers can benefit from the certainty of a permanent worker - but they don't need to give them the benefits of permanent work like sick leave or annual leave.
"If workers want to be casuals they can be. But in our meetings with miners, meat workers and labourers it's clear many labour hire casuals crave the security, pay and conditions of the permanent workers doing the same job beside them," Mr Albanese said.
Paterson MP Meryl Swanson said she was determined to help stop the blatant inequality that existed in some workplaces where people doing the same job received different amounts.
"I'm fighting for the workers of the Hunter, and they work shoulder to shoulder doing the exact same job why shouldn't they get the same pay," she said.
"Labour hire can be a great system, but it's being bastardised. These workers don't get the same job security or the same pay, and it's not good enough.
"How can we have workers with more experience with the same company for many years still stuck as labour-hire and paid less than their junior colleagues?"