Are there restrictions on working hours for students below 21 years old in the UK and Australia?

Yes, there are working hour restrictions for students under 21 in both the UK and Australia.

- UK: If you are 16 or older and on a student visa, you can work up to 20 hours/week during term time for degree-level courses, or 10 hours/week for courses below degree level. Full-time work is allowed during official vacations. These rules apply regardless of age (as long as you are at least 16) and are subject to change.

- Australia: International students can work up to 48 hours per fortnight (every two weeks) during study periods, with unlimited hours during official breaks. These limits apply to all international students, regardless of age, and may change.