estatuto_de_nuriaThe Statute of Autonomy of Catalonia is the fundamental organic law. Both the 1979 Statute of Autonomy and the current one, approved in 2010 state that “Catalonia, as a nationality, exercises its self-government constituted as an Autonomous Community in accordance with the Constitution and with the Statute of Autonomy of Catalonia, which is its basic institutional law, always under the law in Spain.
The Catalan Statute of Autonomy establishes that Catalonia is organised politically through the Generalitat of Catalonia, conformed by the Parliament, the Presidency of the Generalitat, the Governement or Executive Council and the other institutions created by the Parliament.
The Parliament of Catalonia is the legislative body of the Generalitat and represents the citizens of Catalonia. It is elected every four years by universal suffrage, and it has powers to legislate in different matters such as education, health, culture, internal institutional and territorial organization, election and control of the President of the Generalitat and the Government, budget and others, according with the desconsol-i-parlamentStatute of Autonomy. The last Catalan election was held on 27 September 2015, and its current president is Carme Forcadell, incumbent since that year.
The highest representative of Catalonia is the President of the Generalitat of Catalonia, and he/she is also responsible of leading the government’s action. The actual President of the Generalitat of Catalonia is Carles Puigdemont, incumbent as of 2016.
Catalonia has its own police force, theMossos d’Esquadra, whose origins date back to the 18th century. The national bodies retain personnel within Catalonia to exercise functions of national scope such as overseeing ports, airports, coasts, international borders, custom offices, the identification of documents and arms control, immigration control, terrorism prevention, arms trafficking prevention, amongst others.
Most of the justice system is administered by national judicial institutions, the highest body and last judicial 67260532instance in the Catalan jurisdiction, integrating the Spanish judiciary, is theHigh Court of Justice of Catalonia. The criminal justice system is uniform throughout Spain, while civil law is administered separately within Catalonia. The civil law that are subject to autonomous legislation have been codified in the Civil Code of Catalonia since 2002.
Navarre, the Basque Country and Catalonia are the Spanish communities with the highest degree of autonomy in terms of law enforcement.
The responsable body of the government of the Generalitat is the Executive Council or Government, it holds executive and regulatory power. It comprises the President of the Generalitat, the First Minister and the Ministers. Its seat is the Palau de la Generalitat, in Barcelona.

Related links:
http://www.catalangovernment.eu/pres_gov/government/en/index.html
http://economia.gencat.cat/en/70_ambits_actuacio/relacio_amb_inversors/fets_i_dades/estructura_institucional_i_competencies/