- Japanese Federation of Iron and Steel Workers' Unions
- Japanese Metal Mine Workers' Union
- Japan Federation of Basic Industry Workers' Unions
- Japan Confederation of Shipbuilding and Engineering Workers' Unions
- History of the steel industry (1850–1970)
- Ironworker
- Sōhyō
- United Steelworkers
- 1938 Dalfram dispute
- RENGO
