Insurance claim is a formal demand to insurance company for a payment based on insurance policy. Claim may be filed directly to insurance company or filed through their insurance brokers or agents. Insurance broker/agent duty including sells, solicits, and/or negotiate insurance for compensation. Marsh & McLenna, Aon Corporation, Arthur J. Gallagher & Co and Willis Group are the largest insurance brokers in the world based on revenue. 

Insurance company reviews the claim for its validity and will pay the claim to the insured or third party (broker or agent on behalf of the insured) once the insurer approved. Most insurance company claims department hire a large number of claim adjusters. Claim adjusters or claim handler will investigates insurance claims by interviewing the claimant and witnesses, consulting police, checking hospital records, and inspecting property damage to determine the extent of the insurance company's liability.

These are typically claims adjusters' duties :

Insurance company need to balance the elements of customer satisfaction, administrative expenses, and claim overpayment leakages. The company have to manage and overcome the major business risk, fraudulent insurance practices. It may lead to a disputes between insurers and insurance company and could escalates into litigation.