Working from home does not exempt you from these laws.
Securely disposing your confidential documents is required by law. Working from home does not exempt you from these laws.
You should not be throwing away everything into the rubbish bin. The risks are too high and are now too easy to protect yourself against. Staying Privacy Act compliant is critically important.
Do you know what you should be shredding? Don't leave it up to chance or your own discretion. Even small bits of personal information can be dangerous in the wrong hands.