I am an Australian now living in Canada, but in my Australian business I always "employ" people as a contractor, which simplifies things a lot. You do not have to pay superannuation, although I still pay workplace health and safety, but that's only a few hundred dollars. All the contractor has to do is register an ABN (free and can be done online) and send you monthly invoices.

Also be aware that in Australia people usually pay for their own health insurance if they want private health insurance.

Just be careful to set things up so it looks like your contractor is really a contractor. Even if you have a contract agreement the tax office will declare him to be an employee if that's what he looks like to them (paid like an employee, works full time, you're his only client etc).