Life insurance (or life assurance, especially in the Commonwealth of Nations), is a contract between an insurance policy holder and an insurer or assurer, where the insurer promises to pay a designated beneficiary a sum of money (the benefit) in exchange for a premium, upon the death of an insured person (often the policy holder). Depending on the contract, other events such as terminal illness or critical illness can also trigger payment. The policy holder typically pays a premium, either regularly or as one lump sum. Other expenses (such as funeral expenses) can also be included in the benefits.
Life policies are legal contracts and the terms of the contract describe the limitations of the insured events. Specific exclusions are often written into the contract to limit the liability of the insurer; common examples are claims relating to suicide, fraud, war, riot, and civil commotion.
Life-based contracts tend to fall into two major categories:
An early form of life insurance dates to Ancient Rome; "burial clubs" covered the cost of members' funeral expenses and assisted survivors financially. The first company to offer life insurance in modern times was the Amicable Society for a Perpetual Assurance Office, founded in London in 1706 by William Talbot and Sir Thomas Allen. Each member made an annual payment per share on one to three shares with consideration to age of the members being twelve to fifty-five. At the end of the year a portion of the "amicable contribution" was divided among the wives and children of deceased members, in proportion to the amount of shares the heirs owned. The Amicable Society started with 2000 members.
The first life table was written by Edmund Halley in 1693, but it was only in the 1750s that the necessary mathematical and statistical tools were in place for the development of modern life insurance. James Dodson, a mathematician, and actuary, tried to establish a new company aimed at correctly offsetting the risks of long term life assurance policies, after being refused admission to the Amicable Life Assurance Society because of his advanced age. He was unsuccessful in his attempts at procuring a charter from the government.