Income in old age without continued work is a recent arrangement, and the mechanisms for providing it have changed fundamentally within living memory.
Before pensions
People worked until they could not, then depended on family, charity or the poor law.
Which produced documented destitution among the elderly, and it was one of the identified social problems of industrial societies.
Occupational pensions existed for limited groups — civil servants, military, some large employers — as a retention and loyalty mechanism.
State provision
Old age pensions were introduced by states from the late nineteenth century.
Which was initially means-tested and at ages that few reached, given life expectancy at the time.
Contributory social insurance models developed alongside, linking entitlement to contributions.
The demographic assumption
Pay-as-you-go systems fund current pensions from current contributions.
Which works while the ratio of contributors to pensioners is favourable.
Falling birth rates and rising longevity have shifted that ratio in most developed countries, which is the source of most pension policy difficulty.
Defined benefit
Employer promises of a specified income, calculated by formula.
Which places investment risk, longevity risk and inflation risk on the employer.
These closed to new members across the private sector in many countries as three things converged — longer lives, falling interest rates raising the present value of promises, and accounting changes making deficits visible on balance sheets.
Defined contribution
A defined contribution with an undefined outcome, depending on investment returns and charges.
Which places all the risk on the individual.
That transfer is the largest change in retirement provision in decades and occurred gradually enough that its significance was underappreciated.
Automatic enrolment
Enrolling employees by default with an opt-out.
Which produced dramatic increases in participation, demonstrating that defaults drive behaviour more than incentives.
Contribution adequacy is the subsequent question, since default rates were set low to limit opt-outs.
The decumulation problem
Converting a pot into income for an unknown number of years.
Which is harder than accumulating and receives far less attention.
Annuities transfer longevity risk to an insurer at a price. Drawdown retains flexibility and the risk of exhaustion.
Sequence of returns risk — poor returns early in withdrawal doing disproportionate damage — is a documented and counter-intuitive effect.
Where this is going
Retirement ages have been raised in many countries, and further increases are proposed.
Which is arithmetically necessary in pay-as-you-go systems and falls unevenly, since healthy life expectancy differs substantially by occupation and income.
Anyone making retirement decisions should take regulated advice, since the choices are largely irreversible and the cost of advice is small relative to what is at stake.
Charges
Fees compound against the saver over decades in the same way returns compound for them.
Which means small differences produce substantial differences in final outcome.
Charge caps on default arrangements have been introduced in several jurisdictions for this reason.
Default funds
Most members never make an investment choice, which makes the default the most consequential decision in the system.
Which is made by trustees or providers rather than by members.
Glide paths shifting toward less volatile assets near retirement were designed around annuity purchase and have been redesigned where drawdown became common.
Lost pensions
Job changes over a career produce multiple small pots that are frequently forgotten.
Which is substantial in aggregate, and tracing services and pension dashboards have been introduced in several countries to address it.
State pension forecasts
Most systems provide a forecast of entitlement based on recorded contributions.
Which is straightforward to obtain and is the foundation any planning should start from.
Investment and governance
Pension funds are among the largest institutional investors, which gives them substantial influence over companies.
Which has produced stewardship codes setting expectations on how they exercise it.
Their long time horizons make them theoretically well suited to patient investment, and short-term performance measurement can work against that.
Adequacy
Replacement rate, the proportion of pre-retirement income a pension provides, is the standard adequacy measure.
Which varies enormously between countries and between individuals within them.
Projections generally find substantial proportions of current savers on track for outcomes below what they expect.
Gender gaps
Pension income differs substantially by gender in most countries.
Which follows from earnings differences, career interruption for caring and part-time work.
Credit arrangements for periods of caring exist in several systems and address it partially.
Working longer
Extending working life is the response most consistently proposed to demographic pressure.
Which falls unevenly, since healthy life expectancy differs substantially by occupation and income.
Age discrimination in employment is a practical constraint on the policy, and enforcement varies.
Communication
Pension statements have been criticised as incomprehensible, and simplified formats have been mandated in several jurisdictions.
Which matters because decisions depend on understanding, and comprehension testing of statements has found low rates.
Simplified annual statements have been introduced in several jurisdictions for this reason.