Mr Buzzy,
Whilst I am no tax expert, people that are have advised me that buying an endorsement to GET a job does not qualify. On the other hand (as in the case of the NJS pilots), buying an endorsement to KEEP a job probably does.
I am also informed that with one exception, recent
VB new-hires have not been able to claim the endorsement as a deduction. The exception apparently went to court with the ATO, but settled out of court, and reportedly did get to claim the cost.