Impact assessment

Policy Impact Assessments (IAs) are formal, evidence-based procedures that assess the economic, social, and environmental effects of public policy. They have been incorporated into policy making in the OECD countries and the European Commission.

Key types of impact assessments include global assessments (global level), policy impact assessment (policy level), strategic environmental assessment (programme and plan level), and environmental impact assessment (project level). Impact assessments can focus on specific themes, such as social impact assessments and gender impact assessments.

IAs can improve legislation by:

The department which is responsible for the policy proposal usually has to carry out the IA. Although the purpose and orientation of IA procedures differ, IA guidelines in the various jurisdictions all follow a similar set of steps to be followed by desk officers:

The analytical steps, which mainly relate to step 2, can be set out as i. Problem definition ii. Definition of policy objectives iii. Development of policy options iv. Analysis of impacts v. Comparison of policy options and recommendation of one option vi. Defining monitoring measures.

Throughout the IA process, methods can be used for support. In recent years governments have increasingly invested in developing and applying methods and tools for IA. Depending on usage, IA methods can be classified as methods for

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