This is a very sad fact that has effected me personally. A very dear friend of mine took her own life after getting through the medical and security stage of the last major QF recruitment drive. No fault of QF but it was the last straw for her. This I believe has a lot to do with the LAW, not allowing companies to give feedback because you never know where you went wrong. All her life she dedicated herself to be a flight attendant, from training courses, hotel work and the list goes on. She applied to every airline possible but no matter what we said to her nothing would deter her from her dream of becoming a flight attendant. It certainly didnt help that our group of friends actually became cabin crew and with her dream airline Qantas.
On the upside Qantas have whats called the Employee Assistance Program EAP. This is an external service where you or any member of your family can visit a professional to discuss any issue you like, be it fear of flying (and dont think for a minute some flight attendants dont have this fear especially after a nasty in-air experience) to your husband, wife or partner leaving you and the list goes on. Being an external professional what ever you discuss is NEVER passed onto the airline and its free. All you need to do is speak to your manager and supervisor and all the arrangements are made.
As stephenj points out antidepressants are widely used by many QF crew and it certainly doesnt help when management keeps you in the dark and you dont really know if you will have a job in 5 years time. But as long the senior excutives get their bonus thats all that really matters though RIGHT!!