Big headache for individuals. Not sure they fully understand the mess they are getting themselves into.
If the ruling is confirmed, then it is no longer a bona fide redundancy and the ATO will be chasing the individuals with a very significant tax bill. That will be a personal exposure of every individual who has accepted a redundancy payment. Its just the tax rules.
If I was a TWU member who was retired or had happily moved on to another job then I would not be very happy about having to pay the ATO.