Seems its not just me that doesn't think the rosters worked in Oz are all they should be. As posted by ****su Tonka as taken from OZ ATC Union Website.
Interesting point of difference when you consider that there is another big thread running about the Australian recruitment.
As a comparison, in Australia you can be expected to work 21 shifts with 1 day off after 10 (i.e. 10 in a row max, one day off then another 10 etc.)
There is no maximum time plugged in for radar or non-radar. Most shifts are 8-9 hours. I often do TMA Radar for 2:20 without a break, because of how tight the rosters run.
Fatigue is 'managed' in accordance with a system that is based on the FAID system. The acceptable level is equivalent of driving at 0.05 BAC.