The 700 union members surveyed claim that there is a lack of maintenance on commuter rail tracks in particular and some trains in the region are sent out even though they breach safety regulations.
Erik Sandberg, the press officer for Seko, told Radio Sweden that safety should be put before profit.
"Badly maintained train wheels can damage tracks, so it is a vicious circle. The infrastructure and maintenance is open to free competition and the cheapest offer gets the contract to maintain the tracks. Sometimes we wonder if the only thing that counts is profit".