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RSS Oxford Talk – Tuesday 19th November

19 Nov 19

Join the Oxford local branch of the Royal Statistical Society for this talk aimed at academics and non-academics with an interest in statistics.

Date:              Tuesday 19th November.  Refreshments will be served from 16:30.  The talk will begin at 17:00.

Venue:          Large Lecture Theatre, Department of Statistics, 24-29 St Gile’s, Oxford

Speaker:      Professor Jane Hutton, University of Warwick

Talk Title:   Intergenerational fairness of pensions: Statistical analysis, assumptions and actuarial models.

Abstract:     Intergenerational fairness is an important and ancient concept in society and government. With respect to pensions, intergenerational fairness as well as fairness to women of a certain age have been debated when considering changes in state pension age.

Funded defined benefit schemes which are estimated to have deficits are required to impose deficit recovery payments or change benefits. Current members pay not only for their own future pensions, but also for their predecessors’ (and their own) accrued entitlements. It is often assumed that this means younger people paying for older people. However, older generations’ pensions contributions have provided productive capital investment and infrastructure used by all ages. Strict intergenerational ‘fairness’ within a scheme might neglect wider social balance.

Actuarial models require assumptions in order to estimate assets, liabilities, life expectancy and other demographic factors. Multiple assumptions biased away from statistically valid estimates can substantially increase an estimated deficit. Consequences of these assumptions affect not only the particular scheme’s stakeholders, but wider society. Money used for deficit recovery payments is diverted away from business investment and dividends. A large estimated deficit can bankrupt a company, and put many people out of work. If pension contributions are tax-exempt, the government’s income is reduced.

Assumptions underlying actuarial models are not merely economic or statistical.

Bio: Professor Jane Hutton works in medical statistics, with special interests in survival analysis, meta-analysis and non-random data. Her methodological research largely focuses on developing models to answer questions raised by healthcare professionals and patients. She has written extensively on the ethics and philosophy of statistics, in response to challenges arising from medical research and discussions with international statistical colleagues and philosophers, and has contributed to Research Council ethics guidelines.

This summary is extracted from Prof Hutton’s departmental biography.