The Prime Minister said Mr Fahour's salary was ultimately a matter for the corporation's independent board but agreed with host Neil Mitchell when asked whether the Australia Post boss should"take a pay cut".
"I think that would be a good thing for Ahmed to do,"he said."I think Ahmed should step back and say,here in 2017,in an economy where a lot of people are doing it pretty hard,where budgets are tight,this is too much to be paid as CEO of a government owned-postal company.
"I think most people would look at this and scratch their heads and say'give me a break'."
Mr Turnbull is a former managing director of merchant bank Goldman Sachs in Australia,but has consistently spoken out about excessive executive salaries,including as opposition leader in 2008.