Workplace Relations Act 1996
Alpine is right in some of what he says but maybe not in others.
You can view the workplace relations act on the internet for free.
It's a big document but use the index to just look at relevant stuff
ie;
PART 420= Meaning of industrial action.
PART 448= Employer not to dismiss employee.......
Obviously "work to rule" is NOT listed as industrial action. Infact you can be sacked if you do not work to rule all the time/ any time. We are paid to work to the rules.