Well, I think the 5 years of real-terms pay cut, due to the recession and < inflation pay increase limit per annum, has taken its toll on some folks in general. We have a government saying we're the best performing economy in the region. ToS have been changed, the pension goal-posts moved further away, allowances have been cut/eroded, and we have a recruitment issue in some key roles.
Pay peanuts, expect monkeys. The rest will walk, I'm sure. More through perception of not being valued.