The Prison Officers' Union (Finnish: Vankilavirkailijain Liitto, VVL) is a trade union representing prison and probation staff in Finland.
From 1945 until 1960, it was affiliated to the Finnish Federation of Trade Unions (SAK).
It also joined the Federation of Civil Servants, and when in 1969 that became the Joint Organisation of State Employees (VTY), it became indirectly affiliated to the SAK's successor, the Central Organisation of Finnish Trade Unions.
[3] It is the largest union representing staff of the Ministry of Justice, and describes itself as the second-oldest affiliate of the SAK.
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