The union conducted research among a thousand shop workers active in food and fashion outlets.
Eight out of ten sales assistants said that customers had raised their voice to them.
Nearly six out of ten had been shouted at.
One in three cashiers says that they have been threatened, while one in four shop assistants had been confronted with sexual innuendo.
A full one in six workers reported that they had experienced physical violence.
Ten percent of Belgian shop workers have had to stay off work or are considering changing job because of customer rage.
The union's Jan De Weghe says that it's high time stores took the matter seriously: "Staff need to be taught how to deal with violent customers."
Flandersnews.be / Expatica