Operating loss coverage for businesses is a type of insurance that protects companies against financial losses caused by unforeseen business interruptions insured by risks covered by the contract. This can include interruptions caused by events such as fire, water damage, equipment failure, or other unforeseen circumstances covered by the policy. 

If an insured business suffers a business interruption covered by this policy, the insurance may cover loss of income, the cost of renting alternative premises to continue the business, and other costs associated with resuming operations. This coverage is often required by lenders, and can help protect businesses against the significant financial costs that can arise from an unforeseen business interruption.