The mother of a teenage worker who fell to his death at a Perth CBD construction site in 2017 has welcomed the government's decision to introduce industrial manslaughter laws in WA and has called on detractors to "examine their own conscience" when opposing the move.

In front of the Perth Convention and Exhibition Centre, Regan Ballantine said the legislation sent a necessary message to the industry about the gravity of their responsibility to protect human life.

A passionate work safety advocate, Ms Ballantine has long been campaigning for industrial manslaughter laws to be passed in Parliament and for increased personal accountability for companies who fail to ensure worker safety.

Regan Ballantine, a vocal work safety advocate, outside the Perth Convention and Exhibition Centre following the Premier's announcement. Credit:Marta Pascual Juanola

"These laws are not about retribution or an eye for an eye, they are about changing corporate behaviour and discouraging the prioritisation of profit over people," she said.