The company that you work for must be respondent to the Award before you can claim any entitlements available within the Award.
Don't worry if your company is not listed in the schedule of respondents because more than likely the organisation you are working for is a new business born from one that has gone broke. In this instance there is a transmission of business and the new business is still covered by the previous businesses respondency. The same applies if your company has been bought or sold.
Remember that you can claim underpayment of wages for a period of six years immediately preceding todays date. I.e. as at 28/11/01 you can claim back to 28/11/95. So if you are worried about not being able to get another job, wait until you have one and then go them for the rent.
Underpayment of wages claims in the Federal jurisdiction are handled throught the Magistrates Court in each respective state as Small Claims Court (provided its for less than $5,000) and the costs are therefore minimal.
If you want some more info let me know.