The article shows that heterogeneous incomplete private information can explain the limited existence of guaranteed renewable health insurance (GR) contracts in an otherwise frictionless markets. We derive a unique equilibrium that can be of the form that either only a portion of the population...

Technological progress has improved insurers' ability to monitor policyholders and has led to usage-based insurance (UBI) contracts that incorporate behavioral risk factors in pricing. Economic theory predicts that any informative monitoring signal should be adopted in equilibrium (see Shavell,...