When the Government made it mandatory to give 4 weeks annual leave a couple of years back we were told that this wouldn't mean that those on 4 weeks would get 5 weeks. Then we discovered that Treasury and some other departments had moved people onto 5 weeks. Now, just before the election, all public servants who have worked 5 years will get 5 weeks leave.
The Government has been very worried about the poor support levels in Wellington for some weeks (Wellington and South Auckland won Labour the last election). This is clearly part of the response.
This from the Dominion Post.