I don't know where Karrank works but where I am, morale is good and the rewards are fine. I haven't heard of too many dissallusioned controllers resigning, except for those following the greenback to the Middle East.
Applicants are falling over themselves to get into ATC and very few of them make it. I suggest your friend go to the atc applicants forum at the Civilair site for first hand knowledge from recent applicants:
http://www.civilair.asn.au/
I'd recommend the job to anyone.