The National Trade Union Council , commonly known in Japanese as Zenrōkyō (全労協), is a national confederation of Japanese labor unions. There was another organization of the same name from 1947 to 1950.

International Workers' Day, also known as Labour Day in some countries and often referred to as May Day, is a celebration of labourers and the working classes that is promoted by the international labour movement and occurs every year on 1 May, or the first Monday in May.