A former PNG prime minister says a recent move to extend the period under which the government is immune from facing a no-confidence motion could set a worrying precedent.
The PNG parliament last year voted to extend the grace period in which a no confidence vote can be brought against a serving prime minister from 18 months to 30 months.
Prime Minister Peter O'Neill said it was intended to give ample time for his government and himself to be judged on their performance.
Sir Mekere Morauta has told Australia Network's while governments need to be stable to enact their agendas, that stability can be a double-edged sword.
"A bad government can undermine a country's stability significantly and markedly, but a good government can also grow the country more strongly," he said.
"A bad government, protected by this law under a longer period, may not be good for PNG."
Sir Mekere says when he was prime minister he sought to ensure stability through the 'organic law', which set limitations on the composition of political parties and rules relating to no-confidence votes and political defections.
Sections of that law were declared unconstitutional by the PNG Supreme Court in 2010, but Sir Mekere says some of the principles behind it could still work.
"My own view is that it's worth exploring, because I think in the long-run, having political parties stronger is more sustainable and healthier than having governments protected by laws," he said.
Sir Mekere is currently leading a delegation working to update the priorities of the Pacific Islands Forum.
He says he hopes the plan will find stronger support from the Pacific if its shown that countries can maintain their own agendas, separate from the regional one.
"The promotion and strengthening of regionalism is through what we call regional public goods and services," he said.
"Those inititatives that are better and more effectively implemented by the region for the benefit of all the countries in the region.
"If you concentrate on the regional issues and regional initiatives, they don't necessarily conflict with national initiatives."