An Organic Law (Spanish: Ley Orgánica) in Spanish law refers to a law related to fundamental rights and freedoms and important institutional areas as defined by the Constitution (including inter alia, statutes of autonomy, referendums and electoral processes, functioning and organisation of the Constitutional Tribunal, the organisation of the military and the succession of the throne).
It was inspired by a similar concept in the current French Constitution of 1958[4] and conceived as a democratic safeguard to prevent authoritarian aspirations in the transition to democracy (they are harder to change).
[10] Concretely, organic laws include the following: The Constitution states that "The approval, modification or derogation of organic laws requires an absolute majority of the Congress, in a final vote over the entire bill.
As the Constitution indicates, the principal difference in the process is that the Congress of Deputies must make a final vote, at the end of the entire process, where the law must obtain an absolute majority to be approved; for ordinary laws, this final vote is not required.
In its more than 25 years existence, the Constitutional Court of Spain has made a particularly restrictive interpretation of the matters subject to organic law.