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Hazel Bateman, Andy Lai, and Ralph Stevens December 2012 We assessed alternative presentations of investment risk using a
discrete choice experiment which asked subjects to rank three
investment portfolios for retirement savings across nine risk
presentation formats and four underlying risk levels. Using
Prospect Theory utility specifications we estimate
individual-specific parameters for risk preferences in gains and
losses, loss aversion, and error propensity variability. Our
results support presentations that describe investment risk using
probability tails. Risk preferences and error propensity were found
to vary significantly across sociodemographic groups and levels of
financial literacy. Our finndings should assist regulatory efforts
to disclose risk information to the mass market.
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Julie R. Agnew, Hazel Bateman, and Susan Thorp. December 3, 2012 We implement a customized survey to a representative sample of
1,024 Australians to examine the relationship between financial
literacy and retirement planning. Overall we find aggregate levels
of financial literacy similar to comparable countries with the
young, least educated, unemployed and those not in the labor force
most at risk. However, unlike the international norm, we find that
financial skills increase with age. The role played by the
Australia's mandatory private retirement arrangements, system of
defaults, and interactions with the means-tested safety net pension
at older ages remain open questions.
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Julie R. Agnew, Hazel Bateman, and Susan Thorp. November 19, 2012 This paper presents new evidence from a national survey of
non-retired individuals with superannuation accounts between the
ages of 25 and 65. Fielded in June of 2012, the survey responses
suggest that Australians often are ill informed about many
important features of the superannuation system. This lack of
retirement system knowledge is consistent with findings in other
countries. Specifically, the survey suggests that Australian
respondents are most challenged by questions associated with the
access age to their superannuation savings, the risky composition
of balanced funds (a popular default investment option), and the
tax treatment of superannuation contributions and investments.
Regression analysis suggests a relationship between superannuation
knowledge and savings behaviour. The results provide motivation for
further research in the area and suggest more can be done to
educate individuals about the superannuation system.
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Julie R. Agnew, Hazel Bateman, and Susan Thorp. November 19, 2012 Existing research shows that adjustment to retirement is
correlated with pre-retirement planning. This study presents new
insights into the retirement preparedness of Australians at the
later stages of working life. Recent surveys of those approaching
and entering retirement show that the extent of planning around
exiting the workforce, financial management, bequest provision and
activities during retirement vary greatly. We find that more than
half of Australians in their 50s and 60s have not planned key
aspects of retirement. A small minority have detailed and advanced
plans. In addition, expectations around these issues and actual
realisations may not be well matched.
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Joelle H. Fong, Benedict SK. Koh, and Olivia S. Mitchell September 2012 This paper examines how inability to perform activities of daily
living relates to the risk of nursing home admission over older
adults' life courses. Using longitudinal data on persons over age
50 from the Health and Retirement Study, we show that aging one
year boosts the probability of having two or more disabilities by 9
to 12 percent in a multivariate logistic model. Moreover, at least
three-fifths of all 65-year old men and three-quarters of women
will experience disability levels during their remaining lifetimes
severe enough to trigger nursing home admission. Our analysis also
suggests that certain types of disability are more important than
others in predicting nursing home admittance and use, which has
implications for the design of benefit triggers for long-term care
insurance programs.
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Bei Lu and John Piggott August 2012 China is currently undergoing the largest regional migration in
the world's history. Young rural workers are moving to urban areas,
often in a different province, for substantial periods of their
working lives. Social security policy inChina, while framed by
national protocols and policy guidelines, is administered at more
than 2000 lower-level jurisdictions, typically cities and counties,
and at present this compromises pension entitlements ofChina's 150
million rural migrant workers.
This paper proposes a Notional Defined Contribution (NDC)
mechanism to ensure pension mobility for migrating workers, in both
the accumulation and drawdown phases. Plan governance would ensure
independence from the three existing pension systems. Although the
plan's design would be of the NDC type, requiring no pre-funding,
in practice the relatively young migrant demographic has the
potential to generate considerable reserves. An appropriately
structured NDC plan of this type is shown to be viable by reference
to a previously developed model ofZhejiangProvince's social
security systems. Such a plan would remove mobility barriers to
migrating workers, increase the retirement benefit for mobile
workers, and reduce the future government liability for payouts in
other pension systems in which migrants currently hold
membership.
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Erik Hernaes, Simen Markussen, John Piggott and Ola Vestad June 2012 The relationship between retirement and mortality is studied
with a unique administrative data set covering the full population
of Norway. A series of retirement policy changes in Norway reduced
the retirement age for a group of workers but not for others. By
employing a difference-in-differences framework based on monthly
birth cohort and treatment group status we first establish that the
early retirement program significantly reduced the retirement age -
this remains true when we account for program substitution, for
example into the disability pension. Using instrumental variables
estimation we find that retirement age has no effect on
mortality.
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Ermanno Pitacco July 2012 Many modern insurance products are designed as packages, whose
items may be either included or not in the product actually
purchased by the client. For example: the endowment insurance which
can include various rider benefits and options, the Universal Life
insurance, the Variable Annuities, the presence of possible LTC
benefits in pension products.
The benefits provided by these products imply a wide range of
"guarantees" and hence risks borne by the insurance company (or the
pension fund). Guarantees and inherent risks clearly emerge in
recent scenarios, in particular because of volatility in the
financial markets and trends in mortality / longevity. Appropriate
modeling tools are then needed for pricing and reserving. Hence, a
progressive shift from expected present values, and their prominent
role in life insurance (and pension) calculations, to more modern
and complex approaches, viz the Enterprise Risk Management based
approach, is currently updating the actuarial toolkit.
However the implementation of complex mathematical methods often
constitutes, on the one hand, an obstacle on the way towards sound
pricing and reserving principles. On the other hand, facing the
risks by charging very high premiums trivially reduces the
insurer's market share. Then, alternative solutions can be
suggested by an appropriate product design which aims at sharing
risks between the insurer and the policyholders. Interesting
examples are provided by the design of life annuities as regards
the longevity risk, and by profit participation mechanisms as
regards the financial market risks.
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Joelle H. Fong, John Piggott, and Michael Sherris 31 May 2012 This paper assesses the cost and risk faced by public sector,
defined benefit plan providers arising from uncertain mortality,
including longevity selection, mortality improvements, and
unexpected systematic shocks. Using longitudinal micro data on
Australian pensioners, we quantify the extent of longevity
selection at both aggregate and scheme level. We also show that as
the age-membership structure in a pension scheme matures,
scheme-specific longevity selection risk and systematic shocks
become quantitatively more important and have larger consequences
for plan liabilities than aggregate selection risk or the impact of
mortality improvements.
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Bei Lu May 2012 China's new Rural Pension scheme, announced in October 2009, is
destined to be the world's largest, at least in terms of
membership. By the time it is fully implemented, in 2012, it will
comprise some 600 million members, with about 105 million receiving
benefits at that time.
The new scheme is motivated by concern about the widening income
gap between the urban and the rural sectors, the rich and the poor
in China. But it is unclear that the rural elderly will benefit by
the full amount of the pension, because many currently receive
private transfers from their children, and these may be adjusted
after the introduction of pension benefits.
This paper uses the China Health and Retirement Longitudinal
Study (CHARLS) data to investigate the net impact on the old age
household income inequality when the new rural pension plan is in
place. Logit and OLS analysis are used to estimate the changes of
the probability and value of family transfers when other variables
change. Results indicate that net private transfers are in most
cases uncorrelated with household income, suggesting that the
current public transfer (the new rural pension) will not crowd out
private transfers. Based on these findings, Gini index simulations
are employed to compare income inequality with and without rural
public pension. The improvement in Gansu rural income inequality is
significant while there is only slight improvement in Zhejiang.
Transfers to low income regions from migrants are found to
significantly improve income inequality for rural elders as
well.
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Elena Capatina 2012 In order to design and understand the effects of health care
policy reforms, we need to better understand the different ways in
which health affects individuals and their economic decisions. This
paper studies four channels through which health affects
individuals: (1) productivity, (2) medical expenditures, (3)
available time and (4) survival probabilities, and assesses their
roles in determining labour supply, asset accumulation and
welfare.
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Daniel Alai and Michael Sherris 2012 Longevity risk arising from uncertain mortality improvement is
one of the major risks facing annuity providers and pension funds.
In this paper we show how applying trend models from non-life
claims reserving to age-period-cohort mortality trends provides new
insight in estimating mortality improvement and quantifying its
uncertainty. Age, period, and cohort trends are modelled with
distinct effects for each age, calendar year, and birth year in a
generalized linear models framework. The effects are distinct in
the sense that they are not conjoined with age coefficients,
borrowing from regression terminology, we denote them as main
effects. Mortality models in this framework for age-period,
age-cohort, and age-period-cohort effects are assessed using
national population mortality data from Norway and Australia to
show the relative significance of cohort effects as compared to
period effects. Results are compared with the traditional
Lee-Carter model. The bilinear period effect in the Lee-Carter
model is shown to resemble a main cohort effect in these trend
models. However the approach avoids the limitations of the
Lee-Carter model when forecasting with the age-cohort trend
model.
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Cagri Kumru and John Piggott 2012 This paper studies the interaction between capital income
taxation and a means tested age pension in the context of an
overlapping generations model, calibrated to the UK economy. Recent
literature has suggested a rehabilitation of capital income
taxation (Conesaet al. (2009)), predicated on the idea that capital
is a complement with retirement leisure. This leads naturally to
the conjecture that a publicly funded age pension contingent upon
holdings of capital or capital income may have a similar effect. We
formalize this using a stochastic OLG model with multiple
individuals differentiated by labour productivity and pension
entitlement. Our preliminary findings suggest that a means tested
pension has effects similar to capital income taxation in a
life-cycle context.
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George Kudrna and Alan Woodland 2012 Tax concessions are a common feature of private pension pillars
around the world. Most countries exempt pension fund earnings from
any taxation but tax either benefits (EET regime) or contributions
(TEE regime) progressively as regular private income. By contrast,
Australia's superannuation taxation features concessional flat tax
rates on contributions and fund earnings, with benefits being
generally tax free. Concerned with the vertical equity of the
current superannuation tax concessions, this paper provides a
quantitative analysis of hypothetical replacements of the existing
superannuation tax treatment with the EET and TEE regimes commonly
found in other countries. Using a general equilibrium OLG model
calibrated for Australia, we find that these hypothetical tax
reforms to superannuation improve the vertical equity in the short,
medium and long run, as indicated by larger relative welfare gains
and income improvements experienced by lower income households.
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Loretti Dobrescu, Dimitris Christelis, Alberto Motta 2012 Using life-history survey data from eleven European countries,
we investigate whether childhood conditions, such as socioeconomic
status, cognitive abilities and health problems influence portfolio
choice and risk attitudes later in life. After controlling for the
corresponding conditions in adulthood, we find that superior
cognitive skills in childhood (especially mathematical abilities)
are positively associated with stock and mutual fund ownership.
Childhood socioeconomic status, as indicated by the number of rooms
and by having at least some books in the house during childhood, is
also positively associated with the ownership of stocks, mutual
funds and individual retirement accounts, as well as with the
willingness to take financial risks. On the other hand, less risky
assets like bonds are not affected by early childhood conditions.
We find only weak effects of childhood health problems on portfolio
choice in adulthood. Finally, favourable childhood conditions
affect the transition in and out of risky asset ownership, both by
making divesting less likely and by facilitating investing (i.e.,
transitioning from non-ownership to ownership).
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John Piggott and Rafal Chomik 2012 Australia's retirement income provision system, comprising the
'three pillars' of a means-tested Age Pension, mandatory
occupational superannuation and other, voluntary long term savings,
is at the heart of understanding the fiscal implications of ageing.
While the Intergenerational Report, an account of long term fiscal
sustainability, is celebrating its tenth birthday since the first
edition was published, the Superannuation Guarantee (SG), first
implemented in 1992, is about to turn a sprightly twenty. This
paper considers the intergenerational reports as a prism for
studying fiscal, demographic, and policy developments in the
Australian retirement income system over the last decade and into
the future.
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Daniel Alai, Zinoviy Landsman and Michael Sherris 2012 Systematic improvements in mortality results in dependence in
the survival distributions of insured lives. This is not allowed
for in standard life tables and actuarial models used for annuity
pricing and reserving. Systematic longevity risk also undermines
the law of large numbers; a law that is relied on in the risk
management of life insurance and annuity portfolios. This paper
applies a multivariate gamma distribution to incorporate
dependence. Lifetimes are modelled using a truncated multivariate
gamma distribution that induces dependence through a shared gamma
distributed component. Model parameter estimation is developed
based on the method of moments and generalized to allow for
truncated observations. The impact of dependence on the valuation
of a portfolio, or cohort, of annuitants with similar risk
characteristics is demonstrated by applying the model to annuity
valuation. The dependence is shown to have a significant impact on
the risk of the annuity portfolio as compared with traditional
actuarial methods that implicitly assume independent lifetimes.
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Elena Veprauskaite and Michael Sherris 2012 This paper considers optimal reinsurance based on an assessment
of the reinsurance arrangements for a large life insurer. The
objective is to determine the reinsurance structure, based on
actual insurer data, using a modified mean-variance criteria that
maximises the retained premiums and minimizes the variance of
retained claims while keeping the retained risk exposure constant,
assuming a given level of risk appetite. The portfolio of life and
disability policies use quota-share, surplus and a combination of
both quota-share and surplus reinsurance. Alternative reinsurance
arrangements are compared using the modified mean-variance criteria
to assess the optimal reinsurance strategy. The analysis takes into
account recent claims experience as well as actual premiums paid by
insured lives and to the reinsurers. Optimal reinsurance cover
depends on many factors including retention levels, premiums and
the variance of sum insured values (and therefore claims), as a
result an insurer should assess the tradeoff between retained
premiums and the variance of retained claims based on its own
experience and risk appetite.
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Dominic Ho and Michael Sherris 2012 The insurance linked securities (ILS) market is an increasingly
important alternative asset class for which risk and return
analysis differs from other asset classes. Measures of portfolio
risk and return for an ILS portfolio are based on the expected
losses and expected excess returns over the risk free rate.
Multiple criteria decision making (MCDM) has found successful
applications to many real world decision problems. This paper
examines the application of two popular MCDM methods, Analytical
Hierarchy Process (AHP) and ELECTRE III, to ILS portfolios. These
methods are used to screen the securities before constructing
portfolios using linear optimisation with constraints. The
objective function is to minimise the portfolio expected loss for a
given level of expected excess return. Upper and lower bounds are
also placed on the investment in each individual ILS. The results
demonstrate the benefits from applying MCDM to ILS portfolio
selection.
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Elisabetta Magnani, Garima Verma, Anu Rammohan 2012 We model the allocation of time resources by adult children
between competing caring activities - those towards coresiding
elderly and those towards coresiding children. We test the
implications of our model for children's school performance by
focusing on Indonesia, a country characterized by heterogeneity in
social norms, population ageing and reliance on the family for
elderly support. Specifically, we exploit the unique richness of
the Indonesian Family Life Survey (IFLS) (Wave 2 to Wave 4) to find
robust evidence of a negative impact on children's school
achievement of social norms regulating elderly bequests to
coresiding adult carers.
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Jonathan Ziveyi, Craig Blackburn, Michael Sherris 2012 This paper considers the pricing
of European call options written on pure endowment and deferred life annuity contracts, also known
as guaranteed annuity options. These contracts provide a guarantee value at maturity of
the option. The contract valuation is dependent on stochastic interest rate and mortality
processes. We assume single-factor stochastic squareroot
processes for both interest rate and
mortality intensity, with mortality being a
timeinhomogeneous process. We
then derive the pricing partial differential equation (PDE)
and the corresponding
transition density PDE for options written on deferred contracts.
The general solution of the
pricing PDE is derived as a function of the transition density
function.
We solve the transition density
PDE by first transforming it to a system of characteristic
PDEs using Laplace transform
techniques and then applying the method of characteristics.
Once an explicit expression for the
density function is found, we then use sparse grid
quadrature techniques to
generate European call option prices on deferred insurance
products. This approach can
easily be generalised to other contracts which are driven by
similar stochastic processes
presented in this paper. We test the sensitivity of the option
prices by varying independent
parameters in our model. As option maturity increases, the
corresponding option prices
significantly increase. The effect of miss-pricing the guaranteed
annuity value is analysed, as
is the benefit of replacing the whole-life annuity with a term
annuity to remove volatility
of the old age population.
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George Kudrna and Alan Woodland 2012 (update) In this paper we investigate the macroeconomic and welfare
effects of the major changes of the mandatory superannuation reform
proposed in the 2010-11 Australian federal budget. These changes
include gradual increases in the mandatory employer contributions
from 9 to 12 percent of gross earnings and a policy that
effectively removes the concessional 15 percent tax on mandatory
contributions for workers with annual taxable income of up to
$37,000. Using a computable overlapping generations model that
incorporates main aspects of mandatory superannuation, the means
tested age pension and progressive personal income taxation, we
find significantly larger superannuation asset accumulations as a
result of the reform, which generate increases in domestic total
assets and household saving. The reform improves self-funding in
retirement, with government expenditures on the age pension falling
by almost 4.6 percent in the long run. The reform also has positive
impacts on households' long run welfare, with higher income
households solely benefiting from the increased superannuation
contributions while lower income households from the contribution
tax removal. The aggregate efficiency calculations indicate that
the superannuation reform improves efficiency, generating a gain of
almost 0.8 percent or $11,753 in initial resources for each future
generation.
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Elisabetta Magnani 2012 Training (for workers) and innovation (for workplaces) are not
free lunches. From the viewpoint of the firm, training is also
highly risky, because there is uncertainty over the size of any
future returns from employer-provided training. Stylized facts
stress that constraints in achieving preferred working hours have
major impacts on job satisfaction. Consequently hour constraints
may lead to workers' job mobility and older workers' retirement.
Firms internalize the risk of workers' mobility by reducing their
training investments in these workers. I contrast this model with a
signalling model of hour constraints where, in the face of
asymmetric information over workers' quality and reliability, and
so over profitability of training, workers may trade present hour
constraints (at the current wage), for training (and future wage)
opportunities. This set of reasoning implies that, empirically, we
should observe a positive correlation between training and hour
constraints at the individual level. I use two matched
employer-employee datasets, for Australia and Canada respectively,
to test the competing empirical implications of these two models
for the link between hour constraints and training. The main result
of this study is that there is little support for hour constraints
as a signal of future reliability and productivity. Rather, hour
constrained individuals appear to have less chance to receiving
training. This result survives a number of robustness exercises
that attempt to control for selection on observables and selection
on unobservables that determine the hour constraint outcome.
Institutional differences in the retirement funding system, and the
differential appeal of outside option (the option of exiting the
labour force) in Australia and Canada in the two survey years
contribute to explain the different patterns of training and hour
constraints older workers face in these two countries.
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Dimitris Christelis and Loretti I. Dobrescu 2012 Using micro data from eleven European countries, we investigate
the impact of being socially active on cognition in older age.
Cognitive abilities are measured through scores on numeracy,
fluency and recall tests. We address the endogeneity of social
activities through panel data and instrumental variable methods. We
find that social activities have an important positive effect on
cognition, with the results varying by gender. Fluency is
positively affected only in females, while numeracy only in males.
Finally, recall is affected in both sexes. We also show that social
activities, through their effect on cognition, influence positively
households' economic welfare.
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Maathumai Nirmalendran, Michael Sherris and Katja Hanewald 2012 This paper provides a detailed quantitative assessment of the
impact of solvency capital requirements on product pricing and
shareholder value for a life insurer. A multi-period firm value
maximization model for a life annuity provider, allowing for
stochastic mortality and asset returns, imperfectly elastic product
demand, as well as frictional costs, is used to derive optimal
capital and pricing strategies for a range of solvency levels
reflecting differences in regulatory regimes. The model is
calibrated using realistic assumptions and the sensitivity of
results assessed. The results show that value-maximizing insurers
should target higher solvency levels than the Solvency II
regulatory 99.5% under assumptions of reasonable levels of
policyholder's aversion to insolvency risk. Even in the case of
less restrictive solvency regulation, policyholder price elasticity
and solvency preferences are shown to be important factors for a
life insurer's profit maximizing strategy.
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