Papua New Guinea's petroleum and mining industry is pleading with the government to postpone a new law before it puts PNG's economy and future at risk.

The proposed Organic Law will be tabled in Tuesday's parliamentary session but will cause "significant uncertainty for the industry but also for PNG explorers, landowners, provincial and local level governments, and communities", said the PNG Chamber of Mines and Petroleum.

The proposed Organic Law could put an end to an era of contribution and investment that has seen PNG grow as a nation and helped its people thrive.