The self-isolation rules are enforceable under the Public Health (COVID-19 Self-Isolation) Order. If you are directed in writing (including SMS) by NSW Health to self-isolate not following the rules is a criminal offence and attracts heavy penalties.
For individuals, the maximum penalty is $11,000, 6 months in prison, or both with a further $5,500 fine for each day the offence continues.
The NSW Police may also issue on-the-spot fines to individuals of:
$5000 for failure to comply with obligations to self-isolate if you are diagnosed with COVID-19, including staying at home or in hospital, as determined by a doctor, nurse, paramedic or authorised contact tracer; providing details of contact with other persons and places you have visited; and complying with NSW Health guidelines
$5000 for failure to comply with obligations to self-isolate by an authorised contact tracer if you are a close contact of a person diagnosed with COVID-19, and failure to self-isolate at the residence or place determined by the doctor, nurse, paramedic or authorised contact tracer to be suitable to reside in
For corporations on-the-spot fines of $10,000 apply for failure to comply with obligations relating to self-isolation.