This is from America, but there is no reason to suppose that Australia is any different:
https://www.breitbart.com/politics/2019/10/29/congress-encourages-workplace-discrimination-against-americans-say-experts/
“Mass migration encourages mass discrimination against Americans, especially black employees, according to federal data unearthed by the Center for Immigration Studies. “You really have to be out of touch with reality to argue that there are no negative effects of immigration on native workers,” said Jason Richwine, a statistician who studied the issue for the Center for Immigration Studies. “Forty percent of the decline in labor participation rates among black workers over three decades was attributable to competition from illegal immigration,” labor lawyer Peter Kirsanow said at a CIS press event at the press club. That “comes to nearly 1 million fewer jobs for black Americans as a result of the competition from illegal immigrants … and it is the wage levels also,” Kirsanow told the audience on October 25. The huge impact of this discrimination is mostly ignored by wealthy “woke” professionals, who prefer to use discrimination claims as a political club against conservatives. The documented discrimination is just “the tip of the iceberg,” but left-wing critics have gone silent since Donald Trump was elected, said CIS director Mark Krikorian, Yet white-collar workers are also losing salaries and jobs because of discrimination, said Kevin Lynn, founder of Progressives for Immigration Reform:
