Stand downs will have to occur with the Qantas Group if the reports of an 80% reduction in flying are true. This will also affect most of JQ's international operation.
I would imagine this would mean leave with pay until all accrued leave is exhausted, then leave without pay until a return to a more normal flying schedule. This could be a nightmare with simulator and aircraft currency issues as operations are ramped up again. I would not envisage any upside action for at least 2 - 3 months (China seems to be emerging on the other side of COVID19 and that is almost 3 months from the first reports).
Not a happy time.