The parent company of XXXX beverages in Queensland has denied union claims its iconic Brisbane brewery will be shut down.

United Voice coordinator Damien Davie said management from Japanese controlled parent-company Lion notified staff in June the Castlemaine Perkins brewery in Milton would be shut down.

The famous flashing XXXX sign's days could be numbered, according to the United Voice union. Credit:Gabi Harris

But a spokesman for Lion, the food and beverage giant that owned Castlemaine Perkins, said the brewery would not close and was in fact looking to hire more staff.

"In fact, there will be pay offers on the table - on top of the best pay and work conditions in brewing in Queensland," the spokesman said.