16.1 Health Underwriting and Risk Selection

What Underwriting Does

Underwriting is the process by which an insurer evaluates an applicant's risk, decides whether to issue coverage, and sets the premium. Its core job is risk selection and classification: grouping applicants whose expected loss is similar so the premium each pays reflects the risk each brings. The enemy underwriting fights is adverse selection—the tendency of higher-risk people to seek insurance more aggressively than average-risk people.

If adverse selection is not controlled, claims exceed premiums collected, the risk pool deteriorates, and rates spiral upward, driving out the healthy insureds the pool needs. Sound underwriting keeps the pool balanced so the law of large numbers works and the insurer stays solvent.

The Risk-Classification Categories

A substandard applicant is not simply denied. Insurers use a rated policy to keep the business while charging for the extra risk.

Three Ways to Rate a Substandard Risk

• Flat extra premium – a fixed dollar charge per $1,000 of coverage, used for a hazard expected to be constant or temporary (e.g., aviation, a hazardous occupation). It may be permanent or removable later.
• Table rating – the standard premium is multiplied by a factor for each table (Table A/1, B/2, etc.), each table typically adding about 25% of the standard mortality above 100%.
• Rate-up in age – the applicant is charged as though several years older, reflecting greater impairment.

Worked Example – Table Rating

Assume a standard annual premium of $1,200. The applicant is offered Table 4 (Table D). Each table adds ~25% of standard mortality, so Table 4 reflects roughly 100% + (4 × 25%) = 200% of standard mortality.

A common approximation charges the standard premium plus 25% per table on the mortality portion. Many exam questions simplify this to: extra mortality = 4 × 25% = 100% extra, so the rated premium ≈ $1,200 × (1 + 1.00) = $2,400/yr. The point to remember: the number after "Table" multiplies the 25% increment, and higher tables cost proportionally more.

Insurable Interest and Consent

Underwriting also confirms two legal prerequisites. Insurable interest must exist at the time of application: the policyowner must stand to suffer a genuine loss if the insured dies. Individuals have unlimited insurable interest in their own lives; spouses, dependents, and business partners qualify by relationship. Unlike property insurance, life insurance requires insurable interest only at inception—not at the time of death. Underwriters also obtain the insured's consent; a third party generally cannot insure a stranger's life, a rule that blocks wagering contracts and "stranger-originated" life insurance.

Financial Underwriting and Over-Insurance

Financial underwriting verifies the requested amount is justified. A frequent tool is the human life value (HLV) approach, which estimates the present value of the insured's future earnings devoted to dependents. A simplified worked figure: a 40-year-old earning $80,000, of which $60,000 supports the family, with 25 working years remaining, has an undiscounted HLV of 25 × $60,000 = $1,500,000 (discounting for interest lowers this). A request far above the HLV or the needs-analysis figure prompts the underwriter to question the purpose and guard against over-insurance and moral hazard.

Health vs. Life Underwriting Differences

While both lines assess risk, health underwriting weighs different hazards.

• Mortality (likelihood of death) drives life insurance.
• Morbidity (likelihood of sickness, injury, or disability) drives health and disability insurance.
• Occupational risk matters more in disability income; an underwriter assigns the applicant to an occupational class (often Class 1–4, where Class 1 is the lowest-hazard professional/office worker and lower classes are manual or hazardous trades). Higher-hazard classes pay more and may face shorter benefit periods.

Factors Underwriters Evaluate

• Physical condition – current health, build (height/weight), blood pressure, labs.
• Medical history – personal and family history of disease.
• Moral and morale hazard – moral hazard is dishonesty or a tendency toward loss (e.g., a history of fraud); morale hazard is indifference to loss because one is insured.
• Habits and avocations – tobacco/alcohol use, scuba diving, racing, aviation.
• Financial status – ensures the coverage amount is justified (avoiding over-insurance).

Stop-Loss and Group Health

Group health is experience- or community-rated rather than individually underwritten. Large groups submit experience data; small groups are community-rated under ACA rules that bar health-status pricing. Employers self-funding plans often buy stop-loss insurance: specific stop-loss caps the claim cost per individual, while aggregate stop-loss caps total plan claims for the year.

Postmortem of a Bad Decision: Adverse Selection in Action

Suppose an insurer waives medical exams and accepts everyone at standard rates to grow quickly. Healthy applicants comparison-shop and find cheaper preferred rates elsewhere, while applicants with known conditions flock to the no-exam product. Within a year, claims outrun premiums, forcing a rate increase that drives away the few remaining healthy insureds—a death spiral. This illustrates why guaranteed-issue products carry higher rates, longer waiting periods, or graded benefits.

Underwriting Levels Trade-Off

The exam tests this inverse relationship: the looser the underwriting, the higher the price the pool must charge to absorb anti-selection.