A man knocked his then work colleague out with a single punch after he turned up without permission while off duty and began shouting obscenities, it is alleged.
Ovidiu Pricopi, of Cushlawn Drive, Tallaght, is charged with assault causing harm to the man at Citywest Business Campus on November 27 last year.
According to gardai, Mr Pricopi (42) refused to leave the premises and struck his co-worker in the face, knocking him to the floor.
He has not yet entered a plea and Judge David McHugh adjourned the case at Blanchardstown District Court.
Mr Pricopi is also charged with trespassing and using threatening, abusive and insulting behaviour.
Judge McHugh was told the Director of Public Prosecutions consented to the case being dealt with at district court level.
Outlining the prosecution's case, Garda Sergeant Maria Callaghan said the incident was alleged to have happened at 12.30am on the day in question.
It was alleged the accused made his way to the premises at Citywest while he was off duty.
According to the prosecution, he had been drinking and went there with a friend.
He entered the loading bay and began shouting obscenities, it was alleged.
One of his co-workers, the alleged victim, asked him to leave and he refused.
It was alleged Mr Pricopi struck the worker with one punch to the left side of his face, knocking him to the ground, where he lay unconscious for a couple of seconds.
He was taken to Tallaght Hospital, where he underwent a CT scan. A medical report was presented to the court.
Having read this, Judge McHugh said he was accepting jurisdiction and remanded the defendant on bail to appear in court again on September 28.