United States government. In an assigned case, the defendant or property/casualty company does not wish to retain the long-term periodic payment obligation on its books. Accordingly, the defendant or property/casualty insurer transfers the obligation, through a legal device called a qualified assignment, to a third party. The third party, called an assignment company, will require the defendant or property/casualty company to pay it an amount sufficient to enable it to buy an annuity that will fund its newly accepted periodic payment obligation. If the claimant consents to the transfer of the periodic payment obligation (either in the settlement agreement or, failing that, in a special form of qualified assignment known as a qualified assignment and release), the defendant and/or its property/casualty company has no further liability to make the periodic payments. This method of substituting the obligor is desirable for defendants or property/casualty companies that do not want to retain the periodic payment obligation on their books. A qualified assignment is also advantageous for the claimant as it will not have to rely on the continued credit of the defendant or property/casualty company as a general creditor. Typically, an assignment company is an affiliate of the life insurance company from which the annuity is purchased. Unassigned cases In the less common unassigned case, the defendant or property/casualty insurer retains the periodic payment obligation and funds it by purchasing an annuity from a life insurance company, thereby offsetting its obligation with a matching asset. The payment stream purchased under the annuity matches exactly, in timing and amounts, the periodic payments agreed to in the settlement agreement. The defendant or property/casualty company owns the annuity and names the claimant as the payee under the annuity, thereby directing the annuity issuer to send payments directly to the claimant. One of the reasons an unassigned case is less popular is that the obligation is not truly off the books, and the defendant or casualty insurer retains a contingent liability. While a default is a rare occurrence, contingent liability did come into play with the liquidation of Executive Life Insurance Company of New York. Some annuitants suffered shortfalls, and a number of obligors at the wrong end of unassigned cases made up the difference. Tax issues In 1982, Congress adopted special tax rules to encourage the use of structured settlements to provide long-term financial security to seriously injured victims and their families. These structured settlement