National Credit Code
Legislation that includes section 72 (hardship variation)

Mortgage & Finance Association of Australia – Code of Practice
Members involved in credit activities must:
comply with all laws
maintain training standards
hold professional indemnity insurance
arrange appropriate finance for consumers
act promptly and properly in relation to finance applications
disclose commissions and other benefits (brokers only)
maintain IDR and EDR schemes
consider hardship applications.

Residential Tenancy Act
Residential Tenancy Act 1987