Or, the management could be fulfilling their duty to bring Qantas into the 21st century by reforming unproductive and inefficient work practices, and Senator Xenophon is using this as a great publicity tool - after all, who doesn't want their local pollie standing up for an "Aussie Icon"? Of course, if this information was genuine, the good Senator would not have to hide behind Parliamentary Privilege to make his anonymously sourced allegations. Never let the truth get in the way of a good publicity opportunity.
Qantas service staff are rubbish in general (I have no idea about maintenance, pilots etc), and I support Joyce trying to shake things up a bit. I fly about 100 flights a year with Qantas, and the flight attendents, gate staff, and Qantas Club staff generally seem to have forgotten that they work in the service industry, and that they rely on me and my continued patronage for a job.
Based on reports in the media, Qantas has a massively bloated workforce, paid at the highest rates in the world. In the globally competitive airline market, you cannot compete on those terms. The company has to change to remain competitive.