At UOW on Friday Greens Upper House MP David Shoebridge said the salary cap would extend to all senior managers in public service, government agencies, universities and state owned corporations.

"Salary caps are about stopping the rapid growth of taxpayer-funded CEO salaries, while ordinary workers continue to bear the brunt of an increased cost of living," he said.

He said the top salaries often exceeded $1 million a year and should be capped at ten times the NSW median wage of $50,000.

And UOW vice-Chancellor Paul Wellings, on a salary of more than $905,000, was in the Greens' sights.

Candidate for Shellharbour Jamie Dixon said Professor Wellings' pay packet stood out given the casual work conditions of many UOW staff.

"There's no justification for public executives to be pocketing these obscene salaries while they deny fair pay rises to workers on the front line," he said.

“When the University of Wollongong Vice Chancellor is putting his workers through the ringer with rampant over-casualisation, he should not be earning close to a million dollars.

"We we all know it’s the everyday workers who produce the majority of wealth in this country.

"A cleaner on the minimum wage works just as hard as any CEO or executive whose office they clean.

"Right now ordinary wages have stagnated and the people in the Illawarra are really feeling the crunch of the cost of living."