A French chef who worked as a casual bouncer in Queenstown over winter has been ordered to pay $3000 in emotional harm reparation and a $500 fine after admitting an attack outside a Ballarat Street bar that left an Australian ski instructor with a cheekbone broken in four places.

Kevin Mahmoudi Azar, 31, was sentenced in the Invercargill District Court last week by Judge Noel Walsh, according to court reports published by the Otago Daily Times and NZ Herald on 31 October. He had pleaded guilty to one charge of assault with intent to injure.

Judge Walsh also ordered him to write a letter of apology to the victim and to pay court costs.

The court heard the incident unfolded at about 1.10am on 25 August, when Mahmoudi Azar, who was not working that night, was at the Crew Room bar in central Queenstown. The victim, a 34-year-old Australian who had been drinking heavily, was being removed from the bar for his behaviour.

As he was being taken out, the man bumped into Mahmoudi Azar and accidentally dislocated one of his fingers. When the Australian tried to go back inside to collect his jacket, Mahmoudi Azar pushed him and he fell down a flight of stairs, the summary of facts said. A second push sent him down several more steps before another man caught him.

At the bottom of the stairs Mahmoudi Azar kicked the man's foot out from under him. Bystanders stepped in to pull the two apart and the confrontation spread into a wider scuffle. While the victim was being held on the ground by several people and could not defend himself, Mahmoudi Azar deliberately stomped on his shoulder with the heel of his Ugg boot.

The victim was left with a cut to his forehead and a right cheekbone fractured in four places. The court was told he was allegedly assaulted again a few minutes later when he came back to the scene. He has since returned to Australia.

His victim impact statement was not read aloud in court. Judge Walsh described it as a "harrowing sort of reading".

Defence lawyer Peter Redpath told the court the victim had been "out of sorts" that night and that his client had been "terrified about this whole experience". The court heard Mahmoudi Azar intended to leave New Zealand after sentencing to work the ski season in Switzerland.

Police appealed for witnesses in the days after the assault. On 2 September they said two men had been arrested and charged over the incident near the Crew Room entrance, and asked anyone with video of the fight, including footage shared on social media, to come forward.

A second man faces a separate assault charge over the same victim and has a court date next month, the Otago Daily Times reported. He has not been named and no plea has been reported.

The Invercargill District Court sits at 35 Don Street.