Opt-Outs In The European Union: European Union regulations which are not imposed by certain member states by agreement
In general, the law of the European Union is valid in all of the twenty-seven European Union member states.
However, some member states can opt-out from legislation or treaties of the European Union, meaning they do not have to be part in certain policy areas.
Only three states have such opt-outs: Denmark (two opt-outs), the Republic of Ireland (two opt-outs) and Poland (one opt-out). The United Kingdom had four opt-outs before leaving the Union.
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