Death Spiral
A situation in insurance where healthy people leave a risk pool, causing premiums to rise for remaining participants, which drives out more healthy people in a self-perpetuating cycle. This phenomenon can ultimately collapse an insurance market or plan as only the highest-risk individuals remain.
Example
“The company's health insurance plan entered a death spiral when younger employees opted out due to rising premiums, leaving only older workers in the pool.”
Memory Tip
Think of a whirlpool draining water - as healthy people (like water) leave, the insurance pool gets smaller and more concentrated with risk, spiraling toward collapse.
Why It Matters
Understanding death spirals helps consumers recognize when insurance markets are unstable and premiums may become unaffordable. It also explains why some insurance programs require mandatory participation to remain viable.
Common Misconception
Many people think death spirals only affect health insurance, but they can occur in any insurance market where participants can easily opt out. The spiral isn't always immediate - it can take months or years to fully develop.
In Practice
Consider a small employer's health plan with 100 employees paying $500 monthly premiums. If 30 healthy employees leave due to a premium increase to $600, the remaining 70 employees (mostly higher-risk) now face costs of $650 each to maintain the same benefits. This triggers another 20 departures, pushing premiums to $750 for the remaining 50 employees, accelerating the spiral until the plan becomes unsustainable.
Etymology
The term combines "death," referring to the demise of the insurance pool, with "spiral," describing the downward cyclical nature of the problem. It emerged in insurance economics literature in the mid-20th century.
Common Misspellings
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