Therein lies the answer to MrTruthBox's questions. The only thing that will cause a change in conditions at Eastern, is when sufficient people leave to force the Gruesome Twosome to do something to try to halt the exodus. This will happen when they simply cannot replace the escapees quickly enough. A gentle turnover of staff delights them, as the staff tend to leave as expensive employees and join as cheap ones, having paid for the privilege of joining (sound of cash registers chinging merrily chez Huxford/Lake).
Always remember - Mr Lake has said on several occasions that he is only here to make money.....