5.3 Life Insurance Underwriting and Risk Classification

The Purpose of Underwriting

Underwriting is the process of evaluating risk, deciding whether to accept an applicant, and assigning the correct premium class. Its goal is to protect the pool against adverse selection — the tendency of higher-risk individuals to seek insurance more than lower-risk individuals. Sound underwriting keeps premiums fair: each insured pays a rate matching their expected mortality risk.

Sources of Underwriting Information

The MIB is a nonprofit clearinghouse that shares coded impairment data among member insurers to detect fraud and omissions. An insurer may not decline an applicant solely on the basis of an MIB report — it must verify independently.

Risk Classifications and Rating

Underwriters assign each accepted applicant to a rate class:

• Preferred — better-than-average health/lifestyle; lowest premium.
• Standard — average risk; the baseline mortality rate.
• Substandard (rated) — higher-than-average risk; higher premium, applied as a table rating (Table 1–8 or A–H, each adding ~25% mortality) or a flat extra (a fixed $/$1,000 charge for a temporary hazard).
• Declined — risk too high to insure.

Worked example (table rating): Standard annual premium is $1,000. The applicant is rated Table 4. Each table adds 25% of the standard mortality cost. Table 4 = 4 × 25% = 100% surcharge on the mortality portion, so the rated premium is roughly $1,000 × (1 + 1.00) = $2,000 (insurers apply the loading to the mortality component, a common exam approximation).

Factors That Affect Classification

• Physical: medical history, build (height/weight), current conditions.
• Moral hazard: dishonesty/character that increases the chance of loss.
• Morale hazard: indifference to loss because one is insured.
• Avocation/occupation: dangerous hobbies (scuba, aviation) or jobs.
• Foreign travel, tobacco use, family history.

Legal Guardrails

• The Fair Credit Reporting Act (FCRA) governs consumer/inspection reports: applicants must be notified an investigative report may be obtained and may request the nature of the report.
• An adverse underwriting decision (decline, rate-up) requires written notice with the reasons.
• Genetic information and other protected characteristics are restricted by federal and state law.

Trap: Preferred is the lowest-cost class. Do not confuse it with standard. And the MIB stores coded data, not full medical records — the APS comes from the doctor.

Three Methods of Rating Substandard Risks

When a risk is higher than standard but still insurable, underwriters charge more using one of three approaches, depending on whether the extra hazard is constant, declining, or temporary:

1. Increase the premium (table/rate-up): add a flat percentage of mortality per table — the most common method for permanent conditions like high blood pressure.
2. Flat extra premium: add a fixed dollar charge per $1,000 of coverage for a specific, often temporary hazard such as a dangerous avocation; it can be removed when the hazard ends.
3. Lien / graded benefit / rated age: reduce the early death benefit or treat the insured as older, used where mortality is elevated initially but expected to improve.

Worked example (flat extra): A scuba-diving applicant buys $200,000 of coverage with a $2.50 per $1,000 flat extra for the avocation. Flat extra = (200,000 / 1,000) × $2.50 = $500 per year added to the standard premium, removable if the applicant stops diving.

Build, Tobacco, and Avocation

Build (height-to-weight ratio) is a core underwriting factor: significant overweight or underweight elevates mortality. Tobacco use typically moves an applicant from preferred to standard or worse, and most insurers require a 12-month tobacco-free period to qualify as a non-smoker. Avocations (aviation, racing, mountaineering) and hazardous occupations can trigger a flat extra or an aviation/occupational exclusion rider rather than an outright decline. Underwriters weigh all factors together — a single adverse factor rarely decides the class by itself.

Adverse Selection and the Insurable Interest Check

Underwriting also confirms two structural requirements. First, insurable interest must exist at the time of application — the applicant must face genuine loss from the insured's death (self, spouse, dependents, business partners, key employees, creditors). Unlike property insurance, life insurance does not require insurable interest to continue at the time of the claim. Second, the requested amount must bear a reasonable relationship to the financial need (income replacement, debts, estate liquidity); a face amount wildly out of line with income is a red flag for moral hazard or speculation.

Numeric Rating and Mortality

Group and individual underwriters often use the numeric rating system, assigning debits for adverse factors and credits for favorable ones, summing to a percentage of standard mortality. A net score of 100% is standard; 125–500% maps to substandard tables. Mortality assumptions are drawn from experience tables, and the priced premium reflects the insured's expected position in that mortality curve.

Worked example (numeric rating): Standard = 100. The applicant earns +50 debits for blood pressure and +25 for build, with −15 credits for family history and lifestyle. Net = 100 + 50 + 25 − 15 = 160%, placing the applicant in a substandard class roughly equivalent to Table 2–3 and a correspondingly higher premium.