Secretly recorded calls can be used by the corruption watchdog and police under a push to strengthen their investigative powers.

Those who obtain copies of illegally recorded conversations, but are not involved in their making, could soon share them with the Independent Commission Against Corruption (ICAC) or NSW Police without fear of punishment.

This is already a temporary exemption for the NSW corruption watchdog, but the government's legislation would enshrine it in law and expand it to other investigative bodies.

NSW Attorney-General Michael Daley said the change will aid investigations by allowing bodies like ICAC to receive and rely on evidence it would otherwise be impossible for them to use.

"This reform has been carefully designed to aid investigations into suspected criminal

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