Government failure occurs when an intervention leads to a deeper market failure or causes a new market failure.
It can happen if a policy fails to create enough of an incentive for people to change their behaviour or if policies are poorly judged or expensive and make problems worse
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Causes of government failure
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Distortion of the Market
Government intervention can cause the market to move away from the equilibrium and create shortages
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Unintended Consequences
Government intervention can have unexpected adverse effects e.g. increasing benefits may increase unemployment
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Information Gaps
Imperfect information may create a welfare loss as the government may over or under subsidise/tax/regulate products