"There were two separate alleged incidents, one being alleged theft and the other being alleged sexual assault, which affected two different crew members,".
The tech giants would be held responsible for enforcing the age limit and face hefty fines if regulators notice young users slipping through the cracks, Prime Minister Anthony Albanese said.
The decision follows a raft of actions since last year to end COVID-era concessions for foreign students and workers in Australia that helped businesses recruit staff locally while strict border controls kept overseas workers out.
The government says the bill, expected to be introduced in parliament later this week, would protect workers' rights and help restore work-life balance.