ICAC lifeline laws now in force in NSW

It took just one day for new laws affirming all previous findings of the NSW ICAC to be introduced, passed through parliament and assented by the governor.

A bill to allow previous ICAC rulings to stand is on its way to being passed. (AAP)

New laws to enshrine previous findings from the NSW anti-graft commission have swept through parliament in record time.

NSW Premier Mike Baird introduced the Independent Commission Against Corruption Amendment (Validation) Bill first thing on Wednesday to ward off a rush of appeals by businessmen previously branded corrupt.

The Labor-backed laws are now in force, after they were fast-tracked through both houses of parliament and signed off by NSW Governor David Hurley about 10.30pm on Wednesday.

They were prompted by a damaging High Court ruling last month, which stated the ICAC had "no power" to investigate allegations levelled at high-ranking Crown prosecutor Margaret Cunneen SC.