The Association of Neutral Labour Unions (ä¸Âç«Âå´åÂÂçµÂÃ¥ÂÂé£絡ä¼Âè°, Chà «ritsu rà Âdà  kumiai renraku kaigi), better known by its Japanese abbreviation Chà «ritsu Rà Âren, was a national trade union federation in Japan from 1956 to 1987.
Chà «ritsu Rà Âren was established in 1956 as an association of labor unions affiliated with the General Council of Trade Unions of Japan (Sà Âhyà Â), but that were increasingly dismayed by Sà Âhyà Â's promotion of contentious non-workplace struggles in support of left-wing political objectives. By calling themselves the "Association of Neutral Labour Unions," Chà «ritsu Rà Âren was signaling its "neutral" (chà «ritsuteki) position in the ideological struggles of the global Cold War.
Initially, Chà «ritsu Rà Âren was a loose association still remaining within and not clearly distinguished from Sà Âhyà Â, even continuing to share most of its staff with Sà Âhyà Â, albeit avoiding any overt affiliation with Sà Âhyà Â's main political affiliate, the Japan Socialist Party. Over time, however, Chà «ritsu Rà Âren became more conservative and built up its own staff, but continued to co-operate with Sà Âhyà  in many cases.
Although Chà «ritsu Rà Âren generally shied away from overtly political actions, the association did participate in the successful struggle in 1958 to defeat the revision of the Police Duties Bill proposed by conservative prime minister Nobusuke Kishi, as well as the ensuing 1960 Anpo protests against revision of the US-Japan Security Treaty, both of which opponents were successfully able to portray as not so much left-right political issues but rather as basic threats to Japanese democracy and civil rights.
After the spectacular failure of the Miike Coal Mine Strike in 1960 and the general discrediting of Sà Âhyà Â's political struggles, Chà «ritsu Rà Âren increasingly made inroads with unions previously affiliated with Sà Âhyà  during the 1960s. By 1967, the association claimed 1,200,000 members, and reached 1,321,000 members in 1978, almost all in the private sector. That year, it formed a loose association with the National Federation Of Industrial Organisations (Shinsambetsu), intending to merge in the future. In 1987, Chà «ritsu Rà Âren merged with both Shinsambetsu and the larger Japanese Confederation of Labour, to form RENGO.
The following unions were affiliated: