Workers' Day

May Day demonstrationSpain, along with many other countries, celebrates International Workers’ Day (El Día internacional de los Trabajadores) or International Work Day (Día internacional del trabajo) or simply the first of May (Primero de Mayo).

The celebration of May Day, which is generally similar around the world, boils down to working-class demonstrations and rallies.

Workers celebrate the adoption of laws governing employers.
In 1956, Pope Pio XII supported this holiday, declaring it a holiday of remembrance of San José Obrero (San José Worker).