a person from the labour department visited out office a few weeks back. she said it was a routine visit and asked to see everyone's ID card. She said if I didn't and can't show her my ID card, she'll have to report me to the police.
your only problem I see is immigration denying you entry on one of your visit run with your computer and all your work is in HK.
or your girlfriend got pissed off at you for spending too many early mornings in Wan Chai with your special lady friends and reported you to immigration.
Not that I am going to, but I was to break the law, I would legally avoid paying taxes in australia and work illegally in HK. THere are over 200 countries in the world. 1 country a year for 40 years. retire back in sydney with my money.