There are fears proposed icare threshold changes may exclude most workers' mental health claims. Photo: Dan Himbrechts/AAP PHOTOS

A whistleblower who helped expose failings in a scheme protecting 3.6 million workers feels betrayed by the treasurer charged with reforming the system.

Subscribe now for unlimited access .

Login or signup to continue reading All articles from our website The digital version of Today's Paper All other regional websites in your area Continue

Enough time has passed since Chris McCann helped expose issues in Australia's largest workers' compensation scheme that a newspaper front page about it - framed in NSW Treasurer Daniel Mookhey's office - has begun to yellow with age.

But the paper's colour is not the only thing that's changed over time,

See Full Page