As an international student, you are allowed to work in Australia part-time as soon as your Student Visa is granted and your course has commenced. When your course is in session, you can work up to 40 hours/fortnight. During the holidays you are allowed to work unrestricted hours.
From 1 July 2023, work restrictions for all other student visa holders will be re-introduced and capped at the increased rate of 48 hours per fortnight. This ensures that student visa holders are able to focus on obtaining a quality Australian education and qualification, while remaining able to support themselves financially, gain valuable work experience, and contribute to Australia’s workforce needs.
More information: https://immi.homeaffairs.gov.au/visas/getting-a-visa/visa-listing/student-500/temporary-relaxation-of-working-hours-for-student-visa-holders