Business Management · Issues and challenges in each main practice area

Pensions and Employee Benefits Challenges for Actuaries

Updated 11 October 2026 · Fact-checked

Pension and employee benefit work asks you to value long-term promises and advise on how to pay for them. The main challenges are funding, longevity risk, discount rate choice and DB versus DC design. Identify who bears each risk, state your assumptions, and link the advice to the sponsor and members.

Understand Pensions and Employee Benefits Challenges

A pension or employee benefit scheme is a promise to pay money to employees later, often decades away. The actuary's job is to put a value on that promise today, advise how much to set aside, and explain the risks to the people who bear them.

In a defined benefit (DB) scheme, the benefit is set by a formula, usually linked to salary and years of service. The sponsor (employer) carries the investment, longevity and salary risk. In a defined contribution (DC) scheme, the contribution is set. The benefit is whatever the fund buys at retirement. The member carries those risks. Hybrid designs share risk between the two.

Funding means building assets to meet the liabilities as they fall due. A scheme is underfunded when assets are below the value of liabilities. The funding method (for example, projected unit or attained age style methods) decides how fast contributions are paid in. A cautious method pays faster and reduces the risk of a shortfall. A less cautious one keeps contributions low now but may pass cost to later years.

Longevity risk is the risk that pensioners live longer than assumed. Liabilities then rise because payments last longer. It matters most for lifetime annuities and pensions. It builds slowly, so it is easy to underestimate. Responses include updating mortality tables, allowing for future improvements, buying annuities from an insurer, and sharing risk with members.

The discount rate turns future payments into a present value. A higher rate gives a lower liability. The choice depends on the purpose. Funding valuations may reflect expected asset returns. Accounting valuations follow the applicable standard, often a rate based on high-quality bond yields. Small changes in the rate can move the liability a lot, so you must show sensitivity.

In India, common examples are gratuity, leave encashment, provident fund and pension schemes such as the NPS. Employers value gratuity and similar liabilities under the accounting standard that applies to them, using the projected unit credit method with explicit assumptions on salary growth, withdrawal, mortality and discount rate. Check your study material for the exact standard and rules before the exam.

Key rules to remember

Present value of a liability: PV = Σ B(t) × v(t), where v(t) = 1 ÷ (1 + i)^t; B(t) is the expected benefit payment at time t. A higher i gives a lower PV.
Funding level: Funding level = Assets ÷ Value of liabilities; Below 100% means a deficit on the chosen basis. The result depends on the basis used.
Surplus or deficit: Surplus (deficit) = Assets − Liabilities; A negative answer is a deficit. Always state the valuation basis.
Final salary DB benefit (typical form): Annual pension = accrual rate × years of service × final salary; For example, 1/60 × 30 × final salary. Scheme rules decide the exact formula.
DC fund at retirement (level contribution at end of each year): Fund = C × s(n at i) = C × ((1 + i)^n − 1) ÷ i; Assumes a constant return i and a fixed contribution C. Real returns vary, which is why DC members bear investment risk.

How to solve Pensions and Employee Benefits Challenges questions

Use this method for any pensions or employee benefits question, whether it asks you to discuss, compare or calculate.

1Identify the scheme type: DB, DC, hybrid, gratuity, provident fund or other. Note who bears each risk.
2List the parties affected: members, sponsor, trustees, regulator and insurer. Name what each one wants.
3Pick the relevant challenge: funding, longevity, discount rate, inflation or salary growth, investment, or design and regulation.
4Explain the mechanism. Say why the risk raises cost or lowers benefit, and in which direction.
5State the assumptions you would use, or the ones given, and the valuation basis. For a calculation, show the formula and the working.
6Give the sensitivity or a mitigation, such as a stress test, annuity purchase, risk sharing or a change in contributions.
7Finish with a clear recommendation to the client in plain language, mentioning limits of your advice.

Quickest way: Who bears the risk, then what it does to cost

When to use it: Use when time is short, especially for MCQs and short discussion questions.

Decide DB or DC. DB means sponsor bears risk. DC means member bears risk.
Ask which way the change moves the liability: longer life raises it, a lower discount rate raises it, higher salary growth raises it.
For a calculation, discount each payment and add. Check that your answer moves in the expected direction.
Write one line on mitigation and one line on who is affected.

Common mistakes in Pensions and Employee Benefits Challenges

Saying DC schemes have no risk for the employer or no cost to anyone.
Students focus on the fixed contribution and forget that risk has moved to the member.
Fix: Say the employer's cost is certain, but members bear investment, longevity and conversion risk. Add that poor outcomes can create pressure on employers.
Thinking a higher discount rate raises the liability.
Mixing up discounting with accumulating.
Fix: Remember that discounting reduces present values. Higher rate means lower liability, so check direction every time.
Treating longevity risk as a one-off shock.
Students link risk to sudden events like market falls.
Fix: Describe it as a slow, hard-to-see trend. Mention improvement in mortality and the need to review assumptions regularly.
Quoting one discount rate without saying why.
Students memorise a rate rather than the purpose of the valuation.
Fix: State the purpose first, such as funding or accounting, then the basis for the rate, then the sensitivity.
Ignoring the sponsor's ability to pay.
Focus stays on assets and liabilities only.
Fix: Mention the strength of the employer covenant. A deficit matters more when the sponsor is weak.
Listing challenges without applying them to the case in the question.
Students write memorised lists to save time.
Fix: Tie each point to the scheme given, such as its size, membership age or benefit type, and say what you would advise.

Worked examples

Example 1

A scheme must pay a lump sum of ₹10,00,000 in exactly 10 years. Calculate the present value at a discount rate of 6% a year, then at 8% a year. Comment on the change. Use (1.06)^10 = 1.7908 and (1.08)^10 = 2.1589.

Show the solution

PV at 6% = 10,00,000 ÷ 1.7908 = ₹5,58,410 (approximately).
PV at 8% = 10,00,000 ÷ 2.1589 = ₹4,63,194 (approximately).
Difference = 5,58,410 − 4,63,194 = ₹95,216.
The higher rate reduces the liability by about 17% of the 6% value (95,216 ÷ 5,58,410 ≈ 0.17).

Answer: PV is about ₹5,58,410 at 6% and about ₹4,63,194 at 8%. A 2 percentage point rise cuts the liability by about ₹95,216. This shows why the discount rate choice must be justified and tested for sensitivity.

Example 2

A company runs a DB pension scheme and is considering closing it and starting a DC scheme. Discuss the main issues for the company and the members.

Show the solution

Company, cost certainty: DC contributions are fixed, so the cost is predictable and balance sheet volatility falls.
Company, risk removed: investment, longevity and salary risks leave the company for future service. Existing DB liabilities remain and still need funding.
Company, other issues: employee relations, retention, and any legal or regulatory requirements on changing benefits.
Members, risk: they now bear investment and longevity risk, and the benefit at retirement is uncertain.
Members, outcomes: the result depends on contribution level, charges, fund choice and the cost of converting the fund into income.
Mitigation: default investment funds, higher contributions, lifestyle de-risking, annuity options, clear communication of risks.
Recommendation: the actuary should present the trade-offs to both sides and advise on transition for existing members, such as closing to new entrants first.

Answer: Closing DB gives the company cost certainty and lower volatility but does not remove past liabilities. Members take on investment and longevity risk, so good design and clear communication are needed to protect outcomes.

Exam tips

Always name who bears the risk. Examiners reward this clear link between design and risk.
In discussion questions, apply points to the scheme in the case. Generic lists score lower.
State assumptions and the purpose of the valuation before giving any number.
For calculations, show the formula, the working and a sentence on what the result means.
Comment on direction: after any change in discount rate, mortality or salary growth, say whether the liability rises or falls.

Practice questions from Issues and challenges in each main practice area

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Pensions and Employee Benefits Challenges: frequently asked questions

What is the main difference between DB and DC for actuaries?

In DB, the benefit is defined and the sponsor bears investment and longevity risk, so the actuary values liabilities and advises on funding. In DC, the contribution is defined and the member bears these risks, so the actuary focuses on adequacy, investment options and the income produced at retirement.

What is longevity risk in pension schemes?

It is the risk that members live longer than assumed, so payments last longer and liabilities rise. It develops slowly and is hard to see. Schemes manage it by updating mortality assumptions, allowing for improvement, buying annuities or sharing risk.

How are gratuity liabilities valued in India?

Employers usually value them using the projected unit credit method, with assumptions for discount rate, salary growth, withdrawal and mortality. The applicable accounting standard guides the basis. Check your study material for the exact requirements.

Why does the discount rate matter so much?

Pension payments are far in the future, so a small change in the rate changes the present value a lot. A higher rate lowers the liability. You should always justify the rate for the purpose and show sensitivity.