You can also use an umbrella contracting company to run the business for you, and employ you with normal salaried employment structure, including pay your pension, healthcare or other salary packaging.

Of course the original hiring company benefits/RSUs etc can't be passed through easily, you need to get those as cash.

Again though, that's not being employed by the original company. The advantage of being employed is the access to those benefits that you lose out on by using a middleman.

Getting those benefits as cash defeats the point of them being those benefits in the first place.