In 1981 Josjö was Swedish champion over 200 metres (21.09) and won the DN-Galan 400 metres in 45.63, defeating a strong international field. The time was a new Swedish record; Josjö never improved it again, and it lasted until Jimisola Laursen ran 45.54 twenty years later. Josjö was selected to represent Europe at the 1981 IAAF World Cup in Rome in the 4 × 400 metres relay; the European team of Josjö, Fons Brijdenbach, Koen Gijsbers and Hartmut Weber placed second behind the United States.