The Japanese Metal Industrial Workers' Union (Japanese: 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.[1] [2] It later joined the Japanese Confederation of Labour (Domei), and by 1967 it was its second-largest affiliate, with 220,044 members. In 1987, it moved to Domei's successor, the Japanese Trade Union Confederation.[3] On 9 September 1999, it merged with the National Metal and Machinery Workers' Union to form JAM.[4]