The rules on the concurrence of collective agreements are analysed here, especially that which -following the latest reform of 2024- allows the priority of application of Autonomous Community collective bargaining agreements over the State ones, providing that its regulation is more favourable, thus linking the development of collective bargaining in the autonomous frameworks of labour relations with the improvement of workers' rights. Starting with a specific (and unquestionably authoritative) doctrinal work on the subject of the structure of collective bargaining and relations between agreements in Spain, the analysis carried out here studies the reforms made to article 84 of the Workers' Statute, taking into account the constant and shared demands of the sovereignist class unionism behind the reforms of the rules governing the concurrence of collective agreements. All of this allows us to contextualise and understand the role played by these rules in the specific case of Galicia, whose collective bargaining is characterised, always from a structural point of view, by the fact that it is a reality built mainly on provincial sectoral collective agreements, what explains why the impact of the reform of 2024 will be rather small.