Real Decreto 3/2002, de 11 de enero, por el que se esatblecen las normas minimas de proteccion de las gallinas ponedoras BOE n° 13 du 15/01/2002, page 1660

This Royal Decree establishes minimum welfare standards for laying hens kept in Spain. It aims to ensure better living conditions for these animals. The rules apply to all farms housing laying hens, impacting egg producers and potentially consumers through changes in production practices.