The Australian government on Thursday announced what it described as world-leading legislation that would institute an age limit of 16 years for children to start using social media, and hold platforms responsible for ensuring compliance.

“Social media is doing harm to our kids and I’m calling time on it,” Prime Minister Anthony Albanese said.

The legislation will be introduced in Parliament during its final two weeks in session this year, which begin Nov. 18. The age limit would take effect 12 months after the law is passed, Albanese said.

The platforms, including X, TikTok, Instagram and Facebook, would need to use that year to work out how to exclude Australian children younger than 16.

“I’ve spoken to thousands of parents, grandparents, aunties and uncles. They, like me, are worried sick about the safety of our kids online,” Albanese said.

The proposal comes as governments around the world are wrestling with how to supervise young people’s use of technologies like smartphones and social media.

Social media platforms would be penalized for breaching the age limit, but underage children and their parents would not.

“The onus will be on social media platforms to demonstrate they are taking reasonable steps to prevent access,” Albanese said.

Antigone Davis, head of safety at Meta, which owns Facebook and Instagram, said the company would respect any age limitations that are introduced.

“However, what’s missing is a deeper discussion on how we implement protections, otherwise we risk making ourselves feel better, like we have taken action, but teens and parents will not find themselves in a better place,” Davis said in a statement.

She added that stronger tools in app stores and operating systems for parents to control what apps their children can use would be a “simple and effective solution.”

The Digital Industry Group Inc., an advocate for the digital industry in Australia, described the age limit as a “20th Century response to 21st Century challenges.”