Description: This paper explores available disability experience data in order to shed some light on the character and extent of the subjective influences which affect the frequency and duration of disability. A mathematical model for computing disability income premiums and reserves is also presented.

Description: This is a discussion of the paper, A General Method of Calculating Experience Net Extra Premiums Based on the Standard Net Amount at Risk by Walter Shur.

Description: This paper presents a short method of calculating, without approximation, substandard annual extra premiums based on the standard net amount at risk. The method proposed in this paper, is by means of specially constructed auxiliary commutation columns, eliminating the need for any summation, and producing exact values of any extra premiums by relatively simple formulas. A mathematical proof of the methodology is provided.

Description: Public Law 93-445 provided for a complete restructuring of the railroad retirement system. This paper discusses 2 of the issues/problems underlying the need for the restructuring. These were 1 concurrent social security benefits paid to railroad annuitants 2 the approach used to increase benefits to keep up with inflation. Also a discussion of the basic achievement of the new law, which was to create a two-tiered benefit structure. Followed by 2 discussion papers submitted

Description: The paper discussed the reasons for a stock company's mutualization detail the mutualization process itself consider actuarial, legal, and other problems that arise and review a recent case history.

Description: This paper deals with credibility as applied to group insurance, where the problem is to estimate the future claim rate of a group as a function of both its own past claim rate and the average claim rate observed for similar groups.

Description: Discussion of the sensitivity of GAAP reserves to certain assumptions made and methodologies used. Followed by a discussion paper

Description: This paper considers the distribution of aggregate claims of an insurer. The general form of the distribution is considered initially, and, after a few mild restrictions are imposed, it is characterized as being a compound distribution. Followed by one submitted discussion paper.

Description: This is the digest from the informal discussion reviewing the 1951 Impairment study. It is the latest in a series of studies covering mortality of impaired risks. It covers the experience under Ordinary insurance issued from 1935 to 1949 traced to the anniversaries in 1950. Standard and substandard policies were studied separately.

Description: This paper uses a Bayesian approach to persistency to explore retirement cost projection variability. The analysis is divided into two parts. In the first part a subjective population projection model is developed, based on a beta-binomial distribution for the number of participants persisting through a given age. Probability statements regarding such items as the number of participants at a given age and the distribution of retirees are developed. The second part shows how the model might be used to generate confidence intervals for retirement cost projections. Both the single-entry-age case and the multiple-entry-age case are considered. From Transactions of Society of Actuaries 1979, Vol. 31.