Generally, Australian employers are required by Government legislation to make superannuation contributions for employees who are paid $450 or more before tax in a calendar month. It doesn’t matter whether the employee is full time, part time or casual, or if they are a temporary resident of Australia.
The minimum you must pay is called the Super Guarantee (SG) and this is currently 10% of the employee’s wages.
You can read more about how much super you need to pay on the ATO website here.