Childcare workers banned in one Australian state will be prevented from "gaming the system" by moving to another jurisdiction, under proposed new laws.

The "banned in one, banned in all" legislation means states and territories will now share information if a person's application to work with children has been rejected due to criminal history or workplace misconduct.

Attorney-General Michelle Rowland said the reform was needed as the current system has "loopholes" that can be exploited.

The new laws - hoped to start at the end of the year - are part of wider safety reforms in the childcare sector after a spate of sexual and physical abuse cases have shocked the country .

The proposed changes to Australia's working with children checks come almost a decade after a landmark royal commission into child sex abuse recommended the system be nationalised.