Insurance Case Interviews: What to Know and a Worked Example

The US Bureau of Labor Statistics (BLS) groups the industry under NAICS 524, Insurance Carriers and Related Activities, and splits it into two activities. NAICS 5241, Insurance Carriers, covers companies that underwrite annuities and insurance policies by assuming risk and assigning premiums. NAICS 5242, Agencies, Brokerages, and Other Insurance Related Activities, covers firms that help with underwriting by selling policies and providing employee-benefit and related services. According to the BLS NAICS 524 industry page, total seasonally adjusted employment in the subsector was 2,930,400 in September 2026, with an unemployment rate of 2.1%. In the first quarter of 2026, the subsector had 230,857 private industry establishments, up from 230,004 in the fourth quarter of 2025. On its insurance overview page, BCG organizes insurance consulting into five sectors: Life Insurance, Property and Casualty (P&C) Insurance, Reinsurance, Bancassurance, and Insurtech. The BLS Occupational Outlook Handbook for insurance underwriters and sales agents breaks the main retail lines down by what they cover.

1. 1. Property and casualty

   Property and casualty (P&C)

   protects individuals and businesses from financial loss due to automobile accidents, fire, theft, and other property damage. Underwriters specialize in commercial (business) or personal insurance, or by policy type such as auto, home, or pet. Commercial P&C also covers workers' compensation, product liability, and medical malpractice.

2. 2. Life insurance and

   Life insurance and annuities

   pays beneficiaries when a policyholder dies, or provides annuities where a policyholder makes a deposit or series of payments in exchange for regular disbursements over time.

3. 3. Health and long-term

   Health and long-term care

   covers medical care, dental care, short- and long-term disability, and assisted-living services for older adults.

4. 4. Publicly traded P&C

   Publicly traded P&C carriers

   report financial results to the SEC on annual Form 10-K and quarterly Form 10-Q filings under Fire, Marine and Casualty Insurance, such as The Progressive Corporation (NYSE: PGR, an Ohio-incorporated large accelerated filer in Mayfield Village, OH) and White Mountains Insurance Group Ltd (NYSE: WTM, a large accelerated SEC filer incorporated in Bermuda with business offices in Hanover, NH). In a case interview, candidates read carrier 10-K filings to separate underwriting performance (premiums minus claims and operating expenses) from investment returns.

As the BLS Insurance Underwriters profile explains, underwriters are the main link between an insurance carrier and a sales agent, and they must balance risky and cautious decisions. If underwriters allow too much risk, the insurance company pays out too many claims. If they do not approve enough applications, the company does not make enough money from premiums.

1. 1. In a case

   In a case interview, you measure this balance with three standard P&L ratios

   Loss Ratio (claims divided by premiums), Expense Ratio (operating expenses divided by premiums), and Combined Ratio (Loss Ratio plus Expense Ratio, which shows whether total claims and operating expenses stay below or exceed total premiums). You can also decompose total claims into Claim Frequency (claims per policy) times Claim Severity (average cost per claim).

2. Part 2

   Actuaries use mathematics, statistics, and financial (2)

   Actuaries use mathematics, statistics, and financial theory to analyze the economic costs of risk and uncertainty, while underwriters screen applicants on criteria that match the line: age and financial history for life insurance, driving record for auto insurance, or bankruptcy history and property inspections for commercial lines. For simple, common lines such as automobile insurance, underwriters typically rely on automated software recommendations. For complex lines such as workers' compensation, they rely more on analytical insight.

3. Part 3

   Distribution is the second economic lever (3)

   Distribution is the second economic lever. Profitability depends on a steady stream of new customers, which carriers reach through online sales and three human channels. Captive agents work exclusively for one insurer. Independent agents sell the policies of several companies to match clients with the best rate and coverage. Insurance brokers represent the client rather than the insurer, and independent brokers must involve an insurer or agent to complete a sale. Commissions are the most common form of agent compensation and depend on the type and amount of insurance sold and whether the transaction is a new policy or a renewal.

4. Part 4

   The BLS employer breakdowns show how (4)

   The BLS employer breakdowns show how labor sits across NAICS 5241 carriers and NAICS 5242 agencies. In 2025, 52% of insurance underwriters worked for direct insurance (except life, health, and medical) carriers, 24% worked for insurance agencies and brokerages, and 4% worked for direct health and medical carriers. Among insurance sales agents, 63% worked at insurance agencies and brokerages, 12% were self-employed, 8% worked for direct non-life/health carriers, and 5% worked for direct health and medical carriers.

5. Part 5

   Labor and technology drive operating expenses (5)

   Labor and technology drive operating expenses. Average hourly earnings across NAICS 524 employees were $49.21 in August 2026 across 39.0 average weekly hours. The table below pairs the 2025 occupational table on the BLS NAICS 524 page with the May 2023 BLS OEWS industry-specific table (which is more than a year old and gives the latest detailed breakdown for customer service, actuarial, and data science roles).

BCG notes that insurance is one of the least digitally mature industries. In NAICS 524, the BLS productivity series shows total factor productivity declined by 2.6% in 2023 and 2.1% in 2024, while labor productivity (output per hour) changed by -0.9% in 2023 and +1.0% in 2024. That pressure explains why consulting cases focus heavily on automation and cost discipline. BCG lists nine levers it uses with insurers: value creation and growth (partnership agreements, technology investments, and M&A), customer centricity, downcycle management, data analytics and AI, CFO excellence, productivity across five operational areas (distribution, customer service, operations, organization, and claims handling), complexity reduction across products and business lines, agile ways of working, and legacy IT systems migration. BCG also highlights two external forces shaping current cases: physical climate risks and new tariffs that affect both claims underwriting and investment returns. In a client example on BCG's insurance page, Generali Italia's digital transformation lowered response time by 50%, reduced downtime by 80%, and cut its defect rate by a factor of ten. BCG also cites generative AI deployments with Signal Iduna (launching the Co SI service assistant), Allstate (analyzing customer touchpoints), and New York Life (enterprise efficiencies and governance). If you have practiced consumer cases like our consumer goods case interview guide, notice how insurance prompts test the same business logic through sector-specific levers. For more across industries, see our 15 case interview examples with solutions.

1. 1. Underwriting profit and

   Underwriting profit and risk balance

   A P&C carrier grew premium revenue last year, but net profit fell. Did looser underwriting criteria, physical climate risks, or tariffs push up claims payouts, or did renewal commissions rise?

2. 2. Distribution channel mix

   Distribution channel mix

   Many customers buy simple policies online, while complex products need human advice. Should a carrier invest in its own sales force, external agencies, or digital bancassurance?

3. 3. Underwriting and claims

   Underwriting and claims automation

   With BLS projecting a 4% decline in underwriter employment from 2025 to 2035 as automated software spreads, which policy lines should a carrier automate and which require human analytical insight?

4. 4. Complexity reduction and

   Complexity reduction and IT migration

   A multiline insurer has dozens of overlapping products on legacy IT systems. How should it rationalize its product lines without losing profitable renewals?

This is an original practice case written by our team. The client and numbers are invented, built around the underwriting and automation mechanics described by the BLS and BCG.

1. 1. Prompt

   Prompt

   Your client is HarborShield, a US P&C carrier selling personal auto and commercial workers' compensation insurance through independent agents. Over the past year, total premium revenue grew, but operating profit fell from $35 million to $18 million. The CEO wants to know what caused the drop and whether HarborShield should roll out a new automated underwriting and claims-triage software platform next quarter.

2. 2. Step 1

   Step 1

   Clarifying questions. You ask three questions. First, how is operating profit defined? It is annual premium revenue minus claims payouts, agent commissions, and internal underwriting and claims-processing salaries, before investment income. Second, which line dropped? You will ask for segment data after structuring. Third, what is the financial hurdle for the software? The CEO requires a 2-year payback on upfront cost.

3. 3. Step 2

   Step 2

   Structure built for this client. You organize your approach into three branches: (1) Underwriting and claims performance by line, testing whether looser approval criteria drove up claims in auto or workers' compensation. (2) Distribution and internal processing costs, checking commission rates and staff productivity across underwriters, claims adjusters, and clerks. (3) Software investment payback and risk, comparing upfront migration costs against labor savings and underwriting accuracy. You start with Branch 1 to isolate which line lost money.

4. 4. Step 3

   Step 3

   Quantitative diagnosis. When you ask for segment data, the interviewer shares last year's and this year's figures.

Walk through the exhibit with units and check the P&L ratios. Commercial workers' compensation held steady at 10,000 policies, $200 million in revenue, $130 million in claims (a 65.0% loss ratio), $50 million in expenses (a 25.0% expense ratio), and a 90.0% combined ratio, generating $20 million in profit. The operational drop happened entirely in personal auto, which swung by $37 million from a $15 million profit to a $22 million loss (last year's combined segment profit was $35 million, and this year's -$2 million combined total was offset by a $20 million corporate reserve release to reach $18 million reported profit).

1. Part 1

   In personal auto last year, the (1)

   In personal auto last year, the loss ratio was $210 million divided by $300 million = 70.0%, and the expense ratio was $75 million divided by $300 million = 25.0%, for a profitable combined ratio of 95.0%. This year, HarborShield raised its auto approval rate from 80% to 90% on 300,000 applications, adding 70,000 policies, while average claims payouts rose by $200 per policy from $1,050 to $1,250. That pushed the personal auto loss ratio to $337.5 million divided by $405 million = 83.3%. Even though the expense ratio improved to $89.5 million divided by $405 million = 22.1%, the combined ratio crossed 100% to reach 105.4%, creating the -$22 million underwriting loss.

2. 2. Step 4

   Step 4

   Software payback math. The automated platform costs $18 million upfront. Deployed in personal auto (a simple line suited for automated software), it tightens screening to an 80% approval rate on 300,000 applications (240,000 policies), lowers claims per policy to $1,100, and cuts auto operating expenses from $89.5 million to $74 million.

3. Part 3

   New personal auto revenue is 240,000 (3)

   New personal auto revenue is 240,000 times $1,500 = $360 million. Claims are 240,000 times $1,100 = $264 million (a 73.3% loss ratio), and expenses of $74 million give a 20.6% expense ratio, bringing the combined ratio back below 100% to 93.9%. Subtracting $264 million in claims and $74 million in expenses leaves +$22 million in operating profit, a $44 million annual swing. Measured strictly on the $15.5 million expense reduction ($89.5M minus $74M), payback is $18 million divided by $15.5 million = 1.16 years. Including the full $44 million profit swing, payback takes 0.41 years (under 5 months), beating the 2-year limit.

4. 4. Step 5

   Step 5

   Final recommendation. Example answer written by our team. The applicant is invented. 'I recommend that HarborShield roll out the automated software platform in personal auto next quarter, while keeping human underwriters on commercial workers' compensation. In personal auto, our combined ratio jumped from 95.0% to 105.4% after we loosened approval rates to 90%. Tightening auto approvals back to 80% and automating processing lowers the auto combined ratio to 93.9% and swings the segment from a $22 million loss to a $22 million profit. That pays back the $18 million upfront software cost in under 5 months on total profit improvement, or 1.16 years on the $15.5 million expense savings alone, well inside the 2-year hurdle. The biggest risk is independent agent pushback when their auto approval rate drops from 90% to 80%. As a next step, we should pilot the software with our top 20% of agencies next month and adjust renewal commissions to reward low-claim policy retention.'

The answer leads with a clear point of view, separates a simple personal line from a complex commercial line using real underwriting and distribution mechanics, names the risk of bad automation (a higher loss ratio exceeding salary savings), and ends by asking for the exact segment data needed to size the decision.

1. 1

   A national insurance carrier sells both personal auto insurance and commercial workers' compensation insurance. The COO wants to cut operating expenses by 15% next year by automating underwriting across all business lines and shifting all sales online. How would you respond?

   Show the sample answer

   Sample answer. Example answer written by our team. The applicant is invented. 'I would push back on applying a single automation and online-sales rule across both lines, because personal auto and commercial workers' compensation have very different risk and buying mechanics. First, on the underwriting side, personal auto is a high-volume, standardized product where driving records and basic criteria can be screened by automated software. Workers' compensation is a complex commercial risk where underwriters need analytical insight to evaluate workplace hazards and financial history. Automating workers' compensation could easily misprice complex applications and trigger a spike in the loss ratio that wipes out any salary savings. Second, on the distribution side, while many retail customers research and buy auto policies online, commercial clients rely on agents and brokers to customize coverage and handle renewals. I would ask for the current approval rates, claims payouts, and processing costs split between auto and workers' compensation, then automate simple auto applications and claims triage first while keeping experienced underwriters and agents on the commercial book.'

   The answer leads with a clear point of view, separates a simple personal line from a complex commercial line using real underwriting and distribution mechanics, names the risk of bad automation (a higher loss ratio exceeding salary savings), and ends by asking for the exact segment data needed to size the decision.

Use this five-point checklist written by our team before a consulting round with an insurance or financial services group.

1. 1. Separate NAICS 5241

   Separate NAICS 5241 from 5242 in the first minute

   confirm whether the client carries underwriting risk or earns agency and brokerage commissions.

2. 2. Match underwriting method

   Match underwriting method to complexity

   propose automated software for high-volume personal lines like auto, and keep human underwriters and actuaries on complex commercial lines like workers' compensation.

3. 3. Check channel incentives

   Check channel incentives

   ask how sales agents are compensated across new policies versus renewals.

4. 4. Test external macro

   Test external macro drivers

   check physical climate risks, tariff impacts on repair costs and investment returns, and legacy IT bottlenecks.

5. 5. Rehearse out loud

   Rehearse out loud with pen and paper

   run full cases with our AI case interviewer to practice multi-step premium and claims arithmetic without a calculator.

   From US Bureau of Labor Statistics: Insurance Carriers and Related Activities (NAICS 524).