The trade union acts of 1964 accepted the right of the workers to collective bargaining and strike, and revolutionary and socialist movements gained momentum on the politic arena.

Among the resolutions adopted at the congress were: support to the campaign „War Against Hunger" launched by the student organizations and establishing a solidarity fund with the assistance of larger unions to help the weaker ones.

By 1967, 6 other unions (Turizm-İş, Kimya-İş, Bank-İş, EMSIS, TADSIS, Gaziantep Tekstil) had joined DİSK, which reported its total membership as 65,730.

On 15 and 16 June the workers employed at enterprises organized by DİSK stopped work and leaving the factories started to march.

[3] DİSK leaders were again arrested after the military intervention on 12 March 1971, and the work of the confederation slowed down markedly during this period.

In 1977 participation to the First of May demonstration organized by DİSK was even larger than the previous year, but the peaceful demonstration ended in a blood bath when unknown persons opened fire to the crowd toward the end of the rally and 35 people were killed (Taksim Square Massacre).

In 1978 DİSK organized a First of May rally again in Taksim Square and there was a large participation in spite of the bloody events of the previous year.

[3] On 22 July 1980 the founder of DİSK and chairman of Türkiye Maden-İş, Kemal Türkler was killed in front of his house in Merter, Istanbul.

[5] The public prosecutor in Bakırköy indicted the alleged right-wing militants Ünal Osmanağaoğlu, Aydın Eryılmaz, Abdülsamet Karakuş and İsmet Koçak for being involved in the murder.

[6] Before the 1980 coup, four main trade union federations with differing political orientations dominated the labor scene.

52 DİSK leaders were arrested and put on trial with the demand of death penalty on the grounds that they had „attempted to demolish the constitutional regime".