A type of insurance policy designed to help in the event of accident, sickness or unemployment. It will typically pay a percentage of your normal monthly mortgage payment for a specified period (eg: 12 months). This type of cover does not apply to voluntary redundancy, dismissal due to misconduct, or as a result of self inflicted injuries. ASU is sometimes also known as Accident, Sickness and Redundancy (ASR) insurance.

In the event of an accident, sickness or involuntary unemployment befalling a borrower, this insurance will cover their mortgage repayments. Some Lenders attach mandatory insurance cover to their most attractive rates, although this is increasingly uncommon.