The union was founded on 16 November 2018, when the Union of Locomotive Drivers merged with the Railway Officers' Union. Like its predecessors, the union affiliated to the Central Organisation of Finnish Trade Unions. The union has about 4,000 members, but about 50% are retired. The union's president is Tero Palomäki.
- "The Union for Railways is the new SAK trade union". SAK. Retrieved 18 March 2020.
- "Liitto". RAU. Retrieved 18 March 2020.