I've already outlined how it works and provided a publication by the Parliament authorised by the CJ of the HCA. You cannot run a termination of employment case against your employer using s116, only laws made by the Parliament which come within the ambit of s116.Constitutional law doesn't work that way mate. Each case is unique to its own circumstances..
One thing that is black letter law is that no government law can discriminate upon religious freedom. This includes contracts which MUST be bound by law in order to be valid in the first place.
The employment contract is a source of employment law separate from, but shaped in its outer limits by statutes and instruments. Andrew Stewart's text is a great, easy to access reading there.
You're free to read that publication or I'm sure you can rip a copy of a constitutional law text somewhere from the internet.