What are the unintended consequences of government social insurance programs?

[Man]

From an Australian perspective, ie medicare, pensions and the dole.

Is there any terms or ideas that prove correct for all government insurance programs? (For instance, i know the dole creates the incentive for people to work less sometimes, is there any incentive or externality that is created by all social insurance programs??)

^If you can't understand my wording, just answer the main questions! Thanks!