Persatuan Buruh Kereta Api (Railway Workers Union, abbreviated PBKA) was a trade union of railway workers in Indonesia. It was affiliated with the Kongres Buruh Seluruh Indonesia (KBSI) trade union centre. PBKA was one of the key unions of KBSI. As of March 1958, PBKA claimed a membership of 32,000.Hindley, Donald. The Communist Party of Indonesia, 1951-1963. Berkeley: University of California Press, 1964. p. 153 PBKA was led by Dr. Kusna.Galenson, Walter. Labor in Developing Economies. Berkeley: University of California Press, 1962. p. 95

PBKA was one of few unions in Indonesia at the time with a functioning check-off system to collective membership fees. As a result, PBKA (unlike most other unions) were able to employ a sizeable full-time staff. Moreover, through the membership fees PBKA was able to provide some health and accident insurance to its members.Pompe, Sebastiaan. Indonesian Law 1949-1989: A Bibliography of Foreign Language Materials with Brief Commentaries on the Law. Dordrecht [u.a.]: Nijhoff, 1992. p. 227

By 1960 PBKA had become the dominant railway workers union in West Java.Hindley, Donald. The Communist Party of Indonesia, 1951-1963. Berkeley: University of California Press, 1964. p. 336

PBKA and the railroad administration managed a joint Railway Workers Social Welfare Department, which gave support to forming cooperatives.Galenson, Walter. Labor in Developing Economies. Berkeley: University of California Press, 1962. p. 99

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