 ŽSK Hermes was from then on clearly defined as a workers club.After the Second World War, the club was reestablished as Železničar Ljubljana, which was later still commonly used name, due to club playing in the framework of Railway Sports Society () on the ŽŠD Ljubljana stadium.Železničar won its first Slovenian Republic League title in 1949 and played in one-off Slovene-Croatian league 1952–53, which was at the time second level of Yugoslav football system.