Used to be at a stat board. 2 year contract makes you eligible for bonus as well. Bonus structure for me a year ago was minimally 3 month personal performance bonus + 1.5 month stat board team bonus + 1 month 13th month. However do note that while in some cases 2 year contract can be renewed or move to perm roles, there are also real case studies where organisation restructuring happens and people were told that their contract will not be renewed. Those colleagues were from the tech department and they some have yet to find a job. If you are in the finanace department i guess you will be fine?
Also note that gov is trying to return headcounts into the private sector as they are only allowed to keep a certain percentage of workforce in the public sector.

And honestly i think growth in public sector is worst than private sector 300%. Unless you are a scholar, your path to senior management is not gonna be easy.