Almost all property insurance policies require that the insured “assist and cooperate” in an insurer’s investigation. If an insured fails to “cooperate,” an insurer may have the right to deny a claim. However, the insurer cannot demand that an insured cooperate with every request. This blog discusses what requests you should ensure an insured cooperates with, what lack of cooperation may be grounds for a denial, and how to manage an insurer’s overbroad and unreasonable request. Most of the principles here are not unique to California and can serve as a general guide almost everywhere else.