A fly-in, fly-out (FIFO) worker charged over the death of a drunk man who tried to hug him has been banned from working as a security officer.

Barrow Island security officer Patrick Lilii has been charged with causing grievous bodily harm to 32-year-old Zak Harvey outside a nightclub in the Perth suburb of Subiaco in April.

Mr Harvey was drunk and hugging people, but when he put his arms around Lilii's neck, it is alleged the FIFO worker forcefully pushed him backwards.

Mr Harvey hit his head on the ground and died in hospital from a brain injury.

After Lilii was charged, Police Commissioner Karl O'Callaghan suspended his licence to work as a security officer and crowd controller, but Lilii challenged the decision in the State Administrative Tribunal (SAT).

The SAT was told Lilii's job as a security officer did not bring him into contact with the public, and he had never been involved in any disciplinary proceedings with his employer Omega Security.

However, the tribunal found these things did not mitigate the seriousness of the offence he was charged with.

The tribunal upheld the Commissioner's decision, finding there were no extenuating circumstances as to why Lilii's licence should not be suspended.

Lilii has indicated he will plead not guilty to the charge of grievous bodily harm.

He is due back in court later this month.