The National Metal and Machinery Workers' Union (MMU, ja, 全国金属機械労働組合, Kinzokukikai) was a

trade union A trade union (labor union in American English), often simply referred to as a union, is an organization of workers intent on "maintaining or improving the conditions of their employment", ch. I such as attaining better wages and benefits ( ...

representing workers in small and medium-sized engineering works in Japan. The union was founded in 1989, when the National Trade Union of Metal and Engineering Workers merged with the National Machinery and Metal Workers' Union. It affiliated to the

Japanese Trade Union Confederation The , commonly known as , is the largest national trade union center in Japan, with over six million members as of 2011.Rengo websitRengo brochure 2010-2011 Retrieved on July 6, 2012 It was founded in 1989 as a result of the merger of the Japan ...

. On 9 September 1999, it merged with the

Japanese Metal Industrial Workers' Union The Japanese Metal Industrial Workers' Union ( ja, ゼンキン連合, Zenkindomei) was a trade union representing metal engineering workers in Japan. The union founded in 1951, and affiliated with the Japanese Federation of Labour. It later joi ...

to form

JAM Jam is a type of fruit preserve. Jam or Jammed may also refer to: Other common meanings * A firearm malfunction * Block signals ** Radio jamming ** Radar jamming and deception ** Mobile phone jammer ** Echolocation jamming Arts and entertai ...

.{{cite web , title=Half-million-strong union inaugurated , url=http://www.industriall-union.org/archive/imf/half-million-strong-union-inaugurated , website=IndustriALL , date=15 September 1999 , access-date=11 November 2021

References

Engineering trade unions Trade unions established in 1989 Trade unions disestablished in 1999 Trade unions in Japan