comment: As a government employee I can tell you why.  Previously the deal was that government jobs paid less than private sector jobs but you got better job security and a good pension.
  Both those perks aren't nearly what they used to be.  Government agencies aren't shy about laying people off anymore and pension "reform" has gutted public sector pensions.  So now the deal is work for less money with benefits that aren't really much better than those offered by private sector employers.
  Under this new reality is it any wonder employees bounce.