Public servants must be accountable to the many "quiet Australians" who they will never meet or hear from and not noisy lobbyists, the prime minister believes.
Scott Morrison is also urging his ministers to ensure they set policy direction for their departments instead of leaving a "leadership vacuum" public servants are forced to fill.
The sentiments are among six goalposts Mr Morrison will lay out for the nation's 240,000 federal public servants at an address to the Institute of Public Administration in Canberra.
Mr Morrison wants public servants to always look beyond the Canberra "bubble" or, in other words, the highly-organised and well-resourced advocates who frequent the city.
"The vast majority of Australians will never come to Canberra to lobby government," he will say on Monday.
"What they do every day is work hard. Pay their taxes. Put their kids through school. Look after their families. And give back to their communities and they are the centre of my focus as PM.
"These are your stakeholders, not the myriad of vested and organised interests that pretend to this status."
The leader will also stress that it is ministers who should set policy direction and have high expectations of their departments.
Prime Minister Scott Morrison Source: AAP
"They must be clear in what they are asking of the public service. They must not allow a policy leadership vacuum to be created, expecting the public service to fill it and do their job."
This is important because ministers have been elected to parliament by Australians and are accountable to them in a unique way.
"In rugby, my coach used to describe it as the bacon and eggs principle, the chicken is involved, but the pig is committed."
Mr Morrison will also highlight the need for the public sector to be focused on service delivery, saying policies are only as good as their implementation.
Targets will also be important, to ensure the government is getting done what it has set out to do.
Australia's public service must also be quicker to adapt to the constant change that marks modern life.
To help it do this, Mr Morrison believes it should attract more of the nation's brightest minds working in the private sector, for a step in their career journey.
Long-term public servants should also spend some time in the private sector, he feels, with diversity of ideas also encouraged.
"It's vital that the APS avoid the sort of stale conventional wisdoms and orthodoxies that can infuse all large organisations."
The address comes as former Telstra boss David Thodey is finalising a review of the public service, which he is expected to hand to government within weeks.
