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Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to
hedge A hedge or hedgerow is a line of closely spaced shrubs and sometimes trees, planted and trained to form a barrier or to mark the boundary of an area, such as between neighbouring properties. Hedges that are used to separate a road from adjoin ...
against the risk of a contingent or uncertain loss. An entity which provides insurance is known as an insurer, insurance company, insurance carrier, or
underwriter Underwriting (UW) services are provided by some large financial institutions, such as banks, insurance companies and investment houses, whereby they guarantee payment in case of damage or financial loss and accept the financial risk for liabili ...
. A person or entity who buys insurance is known as a policyholder, while a person or entity covered under the policy is called an insured. The insurance transaction involves the policyholder assuming a guaranteed, known, and relatively small loss in the form of a payment to the insurer (a premium) in exchange for the insurer's promise to compensate the insured in the event of a covered loss. The loss may or may not be financial, but it must be reducible to financial terms. Furthermore, it usually involves something in which the insured has an insurable interest established by ownership, possession, or pre-existing relationship. The insured receives a
contract A contract is a legally enforceable agreement between two or more parties that creates, defines, and governs mutual rights and obligations between them. A contract typically involves the transfer of goods, services, money, or a promise to ...
, called the insurance policy, which details the conditions and circumstances under which the insurer will compensate the insured, or their designated beneficiary or assignee. The amount of money charged by the insurer to the policyholder for the coverage set forth in the insurance policy is called the premium. If the insured experiences a loss which is potentially covered by the insurance policy, the insured submits a claim to the insurer for processing by a claims adjuster. A mandatory out-of-pocket expense required by an insurance policy before an insurer will pay a claim is called a deductible (or if required by a health insurance policy, a copayment). The insurer may
hedge A hedge or hedgerow is a line of closely spaced shrubs and sometimes trees, planted and trained to form a barrier or to mark the boundary of an area, such as between neighbouring properties. Hedges that are used to separate a road from adjoin ...
its own risk by taking out
reinsurance Reinsurance is insurance that an insurance company purchases from another insurance company to insulate itself (at least in part) from the risk of a major claims event. With reinsurance, the company passes on ("cedes") some part of its own ins ...
, whereby another insurance company agrees to carry some of the risks, especially if the primary insurer deems the risk too large for it to carry.


History


Early methods

Methods for transferring or distributing risk were practiced by
Babylonia Babylonia (; Akkadian: , ''māt Akkadī'') was an ancient Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Syria). It emerged as an Amorite-ruled state ...
n, Chinese and Indian traders as long ago as the 3rd and 2nd millennia BC, respectively. Chinese merchants travelling treacherous river rapids would redistribute their wares across many vessels to limit the loss due to any single vessel capsizing. ''Codex Hammurabi'' Law 238 (c. 1755–1750 BC) stipulated that a
sea captain A sea captain, ship's captain, captain, master, or shipmaster, is a high-grade licensed mariner who holds ultimate command and responsibility of a merchant vessel.Aragon and Messner, 2001, p.3. The captain is responsible for the safe and efficie ...
, ship-manager, or ship charterer that saved a ship from total loss was only required to pay one-half the value of the ship to the
ship-owner A ship-owner is the owner of a merchant vessel (commercial ship) and is involved in the shipping industry. In the commercial sense of the term, a shipowner is someone who equips and exploits a ship, usually for delivering cargo at a certain fr ...
. In the '' Digesta seu Pandectae'' (533), the second volume of the codification of laws ordered by
Justinian I Justinian I (; la, Iustinianus, ; grc-gre, Ἰουστινιανός ; 48214 November 565), also known as Justinian the Great, was the Byzantine emperor from 527 to 565. His reign is marked by the ambitious but only partly realized ''renovat ...
(527–565), a legal opinion written by the Roman jurist
Paulus Paulus is the original Latin form of the English name Paul. It may refer to: Ancient Roman * Paul (jurist) or Julius Paulus (fl. 222–235 AD), Roman jurist * Paulus (consul 496), politician of the Eastern Roman Empire * Paulus (consul 512), R ...
in 235 AD was included about the ''
Lex Rhodia Lex or LEX may refer to: Arts and entertainment * ''Lex'', a daily featured column in the ''Financial Times'' Games * Lex, the mascot of the word-forming puzzle video game ''Bookworm'' * Lex, the protagonist of the word-forming puzzle video ga ...
'' ("Rhodian law"). It articulates the general average principle of marine insurance established on the island of
Rhodes Rhodes (; el, Ρόδος , translit=Ródos ) is the largest and the historical capital of the Dodecanese islands of Greece. Administratively, the island forms a separate municipality within the Rhodes regional unit, which is part of the S ...
in approximately 1000 to 800 BC, plausibly by the
Phoenicians Phoenicia () was an ancient thalassocratic civilization originating in the Levant region of the eastern Mediterranean, primarily located in modern Lebanon. The territory of the Phoenician city-states extended and shrank throughout their hist ...
during the proposed Dorian invasion and emergence of the purported
Sea Peoples The Sea Peoples are a hypothesized seafaring confederation that attacked ancient Egypt and other regions in the East Mediterranean prior to and during the Late Bronze Age collapse (1200–900 BCE).. Quote: "First coined in 1881 by the F ...
during the
Greek Dark Ages The term Greek Dark Ages refers to the period of Greek history from the end of the Mycenaean palatial civilization, around 1100 BC, to the beginning of the Archaic age, around 750 BC. Archaeological evidence shows a widespread collapse ...
(c. 1100–c. 750). The law of general average is the fundamental principle that underlies all insurance. In 1816, an archeological excavation in Minya, Egypt produced a Nerva–Antonine dynasty-era tablet from the ruins of the Temple of Antinous in Antinoöpolis, Aegyptus. The tablet prescribed the rules and membership dues of a burial society collegium established in Lanuvium,
Italia Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
in approximately 133 AD during the reign of
Hadrian Hadrian (; la, Caesar Trâiānus Hadriānus ; 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. He was born in Italica (close to modern Santiponce in Spain), a Roman '' municipium'' founded by Italic settlers in Hispan ...
(117–138) of the
Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Medite ...
. In 1851 AD, future U.S. Supreme Court
Associate Justice Associate justice or associate judge (or simply associate) is a judicial panel member who is not the chief justice in some jurisdictions. The title "Associate Justice" is used for members of the Supreme Court of the United States and some sta ...
Joseph P. Bradley (1870–1892 AD), once employed as an actuary for the
Mutual Benefit Life Insurance Company The Mutual Benefit Life Insurance Company was a life insurance company that was chartered in 1845 and based in Newark in Essex County, New Jersey, United States. The company was headed by Frederick Frelinghuysen (1848–1924). The company wa ...
, submitted an article to the '' Journal of the Institute of Actuaries''. His article detailed an historical account of a Severan dynasty-era life table compiled by the Roman jurist
Ulpian Ulpian (; la, Gnaeus Domitius Annius Ulpianus; c. 170223? 228?) was a Roman jurist born in Tyre. He was considered one of the great legal authorities of his time and was one of the five jurists upon whom decisions were to be based according t ...
in approximately 220 AD that was also included in the ''Digesta''. Concepts of insurance has been also found in 3rd century BC Hindu scriptures such as Dharmasastra, Arthashastra and
Manusmriti The ''Manusmṛiti'' ( sa, मनुस्मृति), also known as the ''Mānava-Dharmaśāstra'' or Laws of Manu, is one of the many legal texts and constitution among the many ' of Hinduism. In ancient India According to consen ...
. The ancient Greeks had marine loans. Money was advanced on a ship or cargo, to be repaid with large interest if the voyage prospers. However, the money would not be repaid at all if the ship were lost, thus making the rate of interest high enough to pay for not only for the use of the capital but also for the risk of losing it (fully described by
Demosthenes Demosthenes (; el, Δημοσθένης, translit=Dēmosthénēs; ; 384 – 12 October 322 BC) was a Greek statesman and orator in ancient Athens. His orations constitute a significant expression of contemporary Athenian intellectual pro ...
). Loans of this character have ever since been common in maritime lands under the name of bottomry and respondentia bonds. The direct insurance of sea-risks for a premium paid independently of loans began in
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to ...
about 1300 AD. Separate insurance contracts (i.e., insurance policies not bundled with loans or other kinds of contracts) were invented in
Genoa Genoa ( ; it, Genova ; lij, Zêna ). is the capital of the Regions of Italy, Italian region of Liguria and the List of cities in Italy, sixth-largest city in Italy. In 2015, 594,733 people lived within the city's administrative limits. As of t ...
in the 14th century, as were insurance pools backed by pledges of landed estates. The first known insurance contract dates from Genoa in 1347. In the next century, maritime insurance developed widely, and premiums were varied with risks. These new insurance contracts allowed insurance to be separated from investment, a separation of roles that first proved useful in marine insurance. The earliest known policy of life insurance was made in the Royal Exchange, London, on the 18th of June 1583, for £383, 6s. 8d. for twelve months on the life of William Gibbons.


Modern methods

Insurance became far more sophisticated in Enlightenment-era
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...
, where specialized varieties developed. Property insurance as we know it today can be traced to the
Great Fire of London The Great Fire of London was a major conflagration that swept through central London from Sunday 2 September to Thursday 6 September 1666, gutting the medieval City of London inside the old Roman city wall, while also extending past th ...
, which in 1666 devoured more than 13,000 houses. The devastating effects of the fire converted the development of insurance "from a matter of convenience into one of urgency, a change of opinion reflected in Sir
Christopher Wren Sir Christopher Wren PRS FRS (; – ) was one of the most highly acclaimed English architects in history, as well as an anatomist, astronomer, geometer, and mathematician-physicist. He was accorded responsibility for rebuilding 52 churc ...
's inclusion of a site for "the Insurance Office" in his new plan for London in 1667." A number of attempted fire insurance schemes came to nothing, but in 1681,
economist An economist is a professional and practitioner in the social science discipline of economics. The individual may also study, develop, and apply theories and concepts from economics and write about economic policy. Within this field there are ...
Nicholas Barbon and eleven associates established the first fire insurance company, the "Insurance Office for Houses", at the back of the Royal Exchange to insure brick and frame homes. Initially, 5,000 homes were insured by his Insurance Office. At the same time, the first insurance schemes for the underwriting of business ventures became available. By the end of the seventeenth century, London's growth as a centre for trade was increasing due to the demand for marine insurance. In the late 1680s, Edward Lloyd opened a coffee house, which became the meeting place for parties in the shipping industry wishing to insure cargoes and ships, including those willing to underwrite such ventures. These informal beginnings led to the establishment of the insurance market Lloyd's of London and several related shipping and insurance businesses.
Life insurance 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 upon the death ...
policies were taken out in the early 18th century. The first company to offer life insurance was the Amicable Society for a Perpetual Assurance Office, founded in London in 1706 by William Talbot and Sir Thomas Allen.Anzovin, Steven, ''Famous First Facts'' 2000, item # 2422, H. W. Wilson Company, p. 121 ''The first life insurance company known of record was founded in 1706 by the Bishop of Oxford and the financier Thomas Allen in London, England. The company, called the Amicable Society for a Perpetual Assurance Office, collected annual premiums from policyholders and paid the nominees of deceased members from a common fund.'' Upon the same principle,
Edward Rowe Mores Edward Rowe Mores, FSA (; 24 January 1731 Old_Style_and_New_Style_dates.html" ;"title="/nowiki> OS: 13 January 1730/nowiki> – 22 November 1778) was an English people">English antiquarian">Old Style and New Style dates">OS: 13 January 17 ...
established the Society for Equitable Assurances on Lives and Survivorship in 1762. It was the world's first mutual insurer and it pioneered age based premiums based on
mortality rate Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of d ...
laying "the framework for scientific insurance practice and development" and "the basis of modern life assurance upon which all life assurance schemes were subsequently based." In the late 19th century "accident insurance" began to become available. The first company to offer accident insurance was the Railway Passengers Assurance Company, formed in 1848 in England to insure against the rising number of fatalities on the nascent
railway Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in Track (rail transport), tracks. In contrast to road transport, where the ...
system. The first international insurance rule was the York Antwerp Rules (YAR) for the distribution of costs between ship and cargo in the event of general average. In 1873 the "Association for the Reform and Codification of the Law of Nations", the forerunner of the International Law Association (ILA), was founded in Brussels. It published the first YAR in 1890, before switching to the present title of the "International Law Association" in 1895. By the late 19th century governments began to initiate national insurance programs against sickness and old age.
Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ...
built on a tradition of welfare programs in Prussia and Saxony that began as early as in the 1840s. In the 1880s Chancellor
Otto von Bismarck Otto, Prince of Bismarck, Count of Bismarck-Schönhausen, Duke of Lauenburg (, ; 1 April 1815 – 30 July 1898), born Otto Eduard Leopold von Bismarck, was a conservative German statesman and diplomat. From his origins in the upper class of ...
introduced old age pensions, accident insurance and medical care that formed the basis for Germany's welfare state.E. P. Hennock, ''The Origin of the Welfare State in England and Germany, 1850–1914: Social Policies Compared'' (2007) In Britain more extensive legislation was introduced by the Liberal government in the 1911 National Insurance Act. This gave the British working classes the first contributory system of insurance against illness and unemployment. This system was greatly expanded after the
Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
under the influence of the Beveridge Report, to form the first modern welfare state. In 2008, the International Network of Insurance Associations (INIA), then an informal network, became active and it has been succeeded by the Global Federation of Insurance Associations (GFIA), which was formally founded in 2012 to aim to increase insurance industry effectiveness in providing input to international regulatory bodies and to contribute more effectively to the international dialogue on issues of common interest. It consists of its 40 member associations and 1 observer association in 67 countries, which companies account for around 89% of total insurance premiums worldwide.


Principles

Insurance involves pooling funds from ''many'' insured entities (known as exposures) to pay for the losses that only some insureds may incur. The insured entities are therefore protected from risk for a fee, with the fee being dependent upon the frequency and severity of the event occurring. In order to be an insurable risk, the risk insured against must meet certain characteristics. Insurance as a financial intermediary is a commercial enterprise and a major part of the financial services industry, but individual entities can also self-insure through saving money for possible future losses.


Insurability

Risk which can be insured by private companies typically share seven common characteristics: # Large number of similar exposure units: Since insurance operates through pooling resources, the majority of insurance policies cover individual members of large classes, allowing insurers to benefit from the
law of large numbers In probability theory, the law of large numbers (LLN) is a theorem that describes the result of performing the same experiment a large number of times. According to the law, the average of the results obtained from a large number of trials sho ...
in which predicted losses are similar to the actual losses. Exceptions include Lloyd's of London, which is famous for insuring the life or health of actors, sports figures, and other famous individuals. However, all exposures will have particular differences, which may lead to different premium rates. # Definite loss: This type of loss takes place at a known time and place from a known cause. The classic example involves the death of an insured person on a life-insurance policy.
Fire Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction Product (chemistry), products. At a certain point in the combustion reaction, called the ignition ...
, automobile accidents, and worker injuries may all easily meet this criterion. Other types of losses may only be definite in theory. Occupational disease, for instance, may involve prolonged exposure to injurious conditions where no specific time, place, or cause is identifiable. Ideally, the time, place, and cause of a loss should be clear enough that a reasonable person, with sufficient information, could objectively verify all three elements. # Accidental loss: The event that constitutes the trigger of a claim should be fortuitous, or at least outside the control of the beneficiary of the insurance. The loss should be pure, in the sense that it results from an event for which there is only the opportunity for cost. Events that contain speculative elements such as ordinary business risks or even purchasing a lottery ticket are generally not considered insurable. # Large loss: The size of the loss must be meaningful from the perspective of the insured. Insurance premiums need to cover both the expected cost of losses, plus the cost of issuing and administering the policy, adjusting losses, and supplying the capital needed to reasonably assure that the insurer will be able to pay claims. For small losses, these latter costs may be several times the size of the expected cost of losses. There is hardly any point in paying such costs unless the protection offered has real value to a buyer. # Affordable premium: If the likelihood of an insured event is so high, or the cost of the event so large, that the resulting premium is large relative to the amount of protection offered, then it is not likely that insurance will be purchased, even if on offer. Furthermore, as the accounting profession formally recognizes in financial accounting standards, the premium cannot be so large that there is not a reasonable chance of a significant loss to the insurer. If there is no such chance of loss, then the transaction may have the form of insurance, but not the substance (see the U.S.
Financial Accounting Standards Board The Financial Accounting Standards Board (FASB) is a private standard-setting body whose primary purpose is to establish and improve Generally Accepted Accounting Principles (GAAP) within the United States in the public's interest. The Securi ...
pronouncement number 113: "Accounting and Reporting for Reinsurance of Short-Duration and Long-Duration Contracts"). # Calculable loss: There are two elements that must be at least estimable, if not formally calculable: the probability of loss and the attendant cost. Probability of loss is generally an empirical exercise, while cost has more to do with the ability of a reasonable person in possession of a copy of the insurance policy and a proof of loss associated with a claim presented under that policy to make a reasonably definite and objective evaluation of the amount of the loss recoverable as a result of the claim. # Limited risk of catastrophically large losses: Insurable losses are ideally independent and non-catastrophic, meaning that the losses do not happen all at once and that individual losses are not severe enough to bankrupt the insurer; insurers may prefer to limit their exposure to a loss from a single event to some small portion of their capital base. Capital constrains insurers' ability to sell earthquake insurance as well as wind insurance in hurricane zones. In the United States, the federal government insures flood risk in specifically identified areas. In commercial fire insurance, it is possible to find single properties whose total exposed value is well in excess of any individual insurer's capital constraint. Such properties are generally shared among several insurers or are insured by a single insurer which syndicates the risk into the
reinsurance Reinsurance is insurance that an insurance company purchases from another insurance company to insulate itself (at least in part) from the risk of a major claims event. With reinsurance, the company passes on ("cedes") some part of its own ins ...
market.


Legal

When a company insures an individual entity, there are basic legal requirements and regulations. Several commonly cited legal principles of insurance include: # Indemnity – the insurance company indemnifies or compensates the insured in the case of certain losses only up to the insured's interest. # Benefit insurance – as it is stated in the study books of The Chartered Insurance Institute, the insurance company does not have the right of recovery from the party who caused the injury and must compensate the Insured regardless of the fact that Insured had already sued the negligent party for the damages (for example, personal accident insurance) # Insurable interest – the insured typically must directly suffer from the loss. Insurable interest must exist whether property insurance or insurance on a person is involved. The concept requires that the insured have a "stake" in the loss or damage to the life or property insured. What that "stake" is will be determined by the kind of insurance involved and the nature of the property ownership or relationship between the persons. The requirement of an insurable interest is what distinguishes insurance from
gambling Gambling (also known as betting or gaming) is the wagering of something of Value (economics), value ("the stakes") on a Event (probability theory), random event with the intent of winning something else of value, where instances of strategy (ga ...
. #
Utmost good faith ''Uberrima fides'' (sometimes seen in its genitive form ''uberrimae fidei'') is a Latin phrase meaning "utmost good faith" (literally, "most abundant faith"). It is the name of a legal doctrine which governs insurance contracts. This means that a ...
– (
Uberrima fides ''Uberrima fides'' (sometimes seen in its genitive form ''uberrimae fidei'') is a Latin phrase meaning "utmost good faith" (literally, "most abundant faith"). It is the name of a legal doctrine which governs insurance contracts. This means that ...
) the insured and the insurer are bound by a good faith bond of honesty and fairness. Material facts must be disclosed. # Contribution – insurers, which have similar obligations to the insured, contribute in the indemnification, according to some method. # Subrogation – the insurance company acquires legal rights to pursue recoveries on behalf of the insured; for example, the insurer may sue those liable for the insured's loss. The Insurers can waive their subrogation rights by using the special clauses. # Causa proxima, or
proximate cause In law and insurance, a proximate cause is an event sufficiently related to an injury that the courts deem the event to be the cause of that injury. There are two types of causation in the law: cause-in-fact, and proximate (or legal) cause. ...
– the cause of loss (the peril) must be covered under the insuring agreement of the policy, and the dominant cause must not be