The National Federation of Cement Workers' Unions of Japan (, Zenkoku Semento) was a

trade union A trade union (British English) or labor union (American English), often simply referred to as a union, is an organization of workers whose purpose is to maintain or improve the conditions of their employment, such as attaining better wages ...

representing workers involved in manufacturing cement in Japan. The union was founded in 1947, and was later a founding affiliate of the

Federation of Independent Unions The Association of Neutral Labour Unions (中立労働組合連絡会議, ''Chūritsu rōdō kumiai renraku kaigi''), better known by its Japanese abbreviation Chūritsu Rōren, was a national trade union federation in Japan from 1956 to 1987. Ch� ...

(Churitsuroren). By 1967, it had 26,855 members. In the late 1980s, it affiliated to the

Japanese Trade Union Confederation Rengo is a List of cities in Chile, city and Communes of Chile, commune located in the Zona Central, Chile, Zona Central of Chile, situated in the Cachapoal Province of the O'Higgins Region at a distance of south of the city of Rancagua and sout ...

, but by 1996 it had only 7,263 members remaining. In 2002, it merged with the Japanese Federation of Chemistry Workers' Unions, the

National Organization of All Chemical Workers The National Organization of All Chemical Workers (, Shin Kagaku) was a trade union representing workers in the chemical industry in Japan. The union was founded in 1950, and soon after was a founding affiliate of the National Federation Of Indus ...

and the Japan Confederation of Petroleum Industry Workers' Unions, to form the Japan Federation of Energy and Chemistry Workers' Unions.{{cite book , last1=Kamakura , first1=Yasuhiko , title=Best Practices in Work-flexibility Schemes and Their Impact on the Quality of Working Life in the Chemical Industries , date=2003 , publisher=International Labour Organization , isbn=9221141403

References

Chemical industry trade unions Trade unions established in 1947 Trade unions disestablished in 2002 Trade unions in Japan