If there are multiple policies covering the same risk, what is this arrangement called?

When multiple policies are covering the same risk, this arrangement is referred to as concurrent policies. This term indicates that two or more insurance policies are in effect at the same time, each providing coverage for the same risk or loss.

Concurrent policies are often utilized to avoid gaps in coverage and ensure that a risk is fully protected, as different policies might offer varying limits, terms, and conditions. This arrangement can also allow for a division of coverage responsibilities, so that the insured is better protected in case of a claim.

In contrast, supplementary coverage usually refers to additional benefits provided by an existing policy, while alternative coverage implies other options for ensuring a risk that are not necessarily in effect simultaneously. Combined coverage is a term that may indicate different types of coverages bundled in a single policy rather than multiple policies covering the same risk.