Police are now investigating the incident, which the retail workers’ union has labelled “vile and disgusting”.
Staff at the Hindley Street restaurant in the city centre were in the firing line on Friday night at around 11.30pm.
“He hit me bro, he hit me in the face bro,” the woman says, before she leans over the counter to pick up a handful of items and throwing it at the store’s employees.
Josh Peak from the retail workers’ union called on authorities to investigate the incident.
“It’s disgusting, it’s vile, and like this when they are just doing their job,” he said.
“It is simply appalling there are some members of the public who think it’s acceptable to treat a fast food worker this way.”
Police were called on the night and said they are investigating.
Last month, the penalty for assaulting retail staff was increased.
Those convicted are now facing up to seven years in jail.
Witnesses say there was no security at the store at the time of the incident, which happens to be across the road from the new police station.
McDonald’s Australia said it was supporting all the staff involved.
“The health and safety of our people and customers is our top priority,” a spokeswoman said.
“Anti-social behaviour is not tolerated in our restaurants and we expect our people to be treated with respect at all times.
“We will always do our best for our customers, but we won’t accept abuse, intimidation, threats or violence towards our employees.”
Police are appealing for information.
