Longevity Risk in Retirement and Pension Liabilities

Summary

The document defines longevity risk from two related perspectives. For an individual, it is the possibility of living longer than their retirement savings can support. For a pension plan or other institution promising lifelong income, it is the financial impact when survival or mortality differs from the assumptions used to project annuity payments.

It notes that longevity risk can be modeled, measured, and mitigated in many ways, but does not describe a particular model or mitigation technique. Instead, it points readers toward an introductory actuarial paper on the financial aspects of longevity risk. The material provides a useful definition and explains why longer lifespans create financial exposure, while offering no equations, empirical evidence, or comparison of methods. Its scope is therefore conceptual rather than a practical modeling guide.

Key ideas

• Individuals face longevity risk when they may outlive their retirement resources.
• Pension providers face financial risk when actual survival differs from assumptions underlying lifelong benefit projections.
• Mortality and survival deviations can change expected annuity costs and liabilities.
• The document points to further introductory material but does not specify a model or mitigation approach.

Tags

# Longevity risk modelling


# Longevity risk modelling












What is Longevity risk, and how to model it under DC and DB pension plans?

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## Answer by g g (score 1, accepted)

https://quant.stackexchange.com/a/16265

While it seems surprising how longevity can be a risk, it becomes obvious if you look at the financial implications. For an individual longevity risk is the chance of outliving your retirement savings. For pension plans or more generally any financial institution guaranteeing individuals lifelong income, it is the deviation, due to increased survival or decreased mortality, of initial projections of annuities from actual numbers.

There is a great variety of ways to model, measure and mitigate longevity risk. A good introduction is "FINANCIAL ASPECTS OF LONGEVITY RISK" published by the Staple Inn Actuarial Society.

Shown in full with attribution under the source's licence. Licence: CC BY-SA 4.0 (Stack Exchange)

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.