Concurrency is when two policies cover the same exposure and the same loss event at the same time.
It often appears with bundled limits, multiple layers, or overlapping endorsements. Concurrency itself is not always a problem, but coordination is essential so the insured is neither under-indemnified nor overcompensated.
Claims logic
Claims teams identify primary versus secondary intent, policy wording priority, and each policy’s attachment point. Most disputes are about whether one policy is pro rata by shares, excess over another, or excess-of-loss.
Underwriting and policy drafting
Underwriters ask for existing insurance details and include anti-overlap terms to prevent adverse selection and pricing leakage. This is especially important for liability and property portfolios where hidden duplicate coverage is common.