Although healthcare institutions tend to mirror public agencies, the PB bonus of 3 - 4 months is typical for a C+ to B grade. So that is definitely not average. Public Sector don't even get 2+ months for the so-called "VC"; the typical "extra" bonus that civil servants will get in a very good year is 1 month. And that is dependent on the economy. So I don't know where you get all these information from.