Although there are no specific child labour laws in South Australia, under section 74 of the Education and Children's Services Act 2019 (SA) it is unlawful to employ a child of compulsory education age during the hours in which they are required to attend school or participate in an approved learning program. It is also unlawful to employ a child at any time of the day or night in work that would make the child unfit to attend school or to obtain proper benefit from attending. The maximum penalty for this is $10 000.
Certain industrial awards and regulations governing some areas of employment also restrict the type of work that a person under 18 years can do, such as operating a forklift. Some industrial instruments provide for a different rate of pay for "junior'" employees. This is particularly the case in the fast food and hospitality industries.
The Young Worker's Legal Service is a specialist free legal service which can help young people (under 30) with legal problems in their workplace. See their website for more information: http://www.ywls.org.au/.