Thousands of young retail workers will earn the full adult rate of pay after the wages umpire scrapped junior rates for some levels of employment.

The Fair Work Commission has decided junior employee rates will no longer apply to retail workers at level four and above.

Retail union nation secretary Gerard Dwyer said previous arrangements discriminated against adult and junior workers.

“Junior employees could be favoured over adults because of the lower rates,” he said in a statement on Wednesday.

“On the other hand, it discriminated against junior workers because they were doing the work of an adult and getting a lower rate of pay.”