According to the Ministry of Family, Labour and Social Policies, out of 13,411,983 workers make a living in Turkey as of January 2019, 1,859,038 of them are members of a union -- indicating a unionization rate of 13.8%.
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TURK-IS has the highest number of members, with 975,000 workers, followed by HAK-IS and DISK, with 684,144 and 171,428 members, respectively.