Insurance is a system whereby individuals and companies concerned about potential hazards pay premiums to an insurance company, which reimburses (in whole or part) them in the event of loss. The insurer profits by investing the premiums it receives. Some common forms of insurance cover business risks, automobiles, homes, boats, worker's compensation, and health. Life insurance guarantees payment to the beneficiaries when the insured person dies. In a broad economic sense, insurance transfers risk from individuals to a larger group, which is better able to pay for losses.