He was often seen cleaning tables and greeting customers, who have dubbed him the ‘best-known person in Northmead’.

Now at 50 years of age, he will be leaving behind sad customers, many of which make the trip into the store just to see him, the The Daily Telegraph reported.

McDonald’s supervisor Courtney Purcell said Mr O’Grady has become an icon in Northmead.

‘We’ve got regular customers who come in to see Russell on Thursday and Friday, and the staff look after him, so we’re going to miss him,’ she said.

Mr O’Grady’s brother Lindsey told the paper his dedication to work had made his family incredibly proud.

‘He’s kind of blase about it but loves his work very much. He’s pretty cheeky sometimes. He’s my big brother and he keeps me in line,’ he said.

The beloved employee’s father, Geoff O’Grady, previously told Daily Mail Australia people used to stop his son on the street to shake his hand.

‘He’s very affectionate, dearly loved and appreciated, to such an extent that we just don’t believe it.’

Geoff said his son’s career has given him a different outlook on life.

‘Somebody said to him ”are you handicapped?” and his answer was ”I used to be when I went to school, but now I work at McDonald’s”,’ he said.

Mr O’Grady began his job at the local restaurant during a time when people with disabilities were seldom in the workforce.

His career began with work experience, but when he showed how hard he worked he moved into a secure job with McDonald’s packing party boxes.

He also tried his hand at other duties in the restaurant, even having a go in the kitchen.

The 50-year-old is just one among hundreds of people living with a disability who have had the opportunity to be trained and put in a job through Jobsupport.

After a lot of contemplation, Mr O’Grady came to the conclusion retirement was the best decision for his health.

He’s an avid tenpin bowler and spends lots of his time at Northmead Bowling Club, the men’s shed at Richmond, where he’ll be spending lots of his free time.