Stop-Loss Insurance Employer Guide
Stop-loss insurance is the financial foundation of every self-funded health plan. Get it wrong and a single catastrophic claim can threaten your plan's viability. This guide walks you through every decision — from sizing your deductible through carrier selection, contract negotiation, laser management, and renewal strategy.
Employers who run a competitive stop-loss re-bid typically reduce premiums by 20–40% while improving contract terms. (SIIA / Milliman · EBIQ practitioner range)
Understand your risk exposure
Before sizing stop-loss coverage, you need to understand your actual claims risk. Review 3 years of claims data if available. Identify your highest-cost claimants, any known upcoming high-cost treatments (transplants, cancer, specialty drugs), and your overall claims volatility. This analysis drives every subsequent stop-loss decision.
Size your specific deductible
The specific deductible is the most important stop-loss decision. Set it too high and you absorb too much risk; too low and you overpay in premiums. The right specific deductible depends on your group size, financial capacity, and risk tolerance. As a general rule, groups under 200 employees should consider lower specific deductibles ($75,000–$150,000); larger groups can absorb higher attachment points ($150,000–$300,000+).
Design aggregate coverage
Aggregate stop-loss protects you when total plan claims exceed a set percentage of expected costs — typically 115–125%. This is your protection against a catastrophic year where multiple members have high claims simultaneously. Aggregate coverage is especially important for smaller groups where a single bad year can threaten plan viability.
Aggregate stop-loss typically has a 3–6 month run-out period. Claims incurred during the plan year but paid after year-end may not count toward your aggregate unless you have run-out coverage.
Carrier selection
Not all stop-loss carriers are equal. Evaluate carriers on financial strength (A.M. Best rating of A- or better), claims payment history, laser practices, contract terms, and service quality. Your stop-loss broker should provide a carrier scorecard. Avoid carriers with a history of aggressive lasering or slow claims payment.
Contract negotiation
The stop-loss contract contains terms that can dramatically affect your protection. Key terms to negotiate: no-new-laser provisions (carrier cannot add lasers at renewal for new conditions), advance funding (carrier pays claims before you reimburse), laser limits (maximum laser amount for any individual), and run-in vs. run-out coverage.
A "run-out" contract covers claims incurred during the plan year but paid after year-end. A "run-in" contract covers claims paid during the plan year regardless of when incurred. Run-out contracts provide broader protection but cost more.
Laser management
Lasers are carrier-imposed higher specific deductibles on known high-cost individuals. They are the most contentious aspect of stop-loss renewal. If a member has a chronic condition or known upcoming high-cost treatment, the carrier may propose a laser at renewal. Negotiate laser limits, no-new-laser provisions, and laser buydown options.
Never accept a laser without understanding the clinical basis. Carriers sometimes propose lasers based on incomplete claims data. Request the specific claims history that triggered the laser proposal.
Renewal strategy
Stop-loss renewal is where most employers lose ground. Carriers use renewal to increase rates, add lasers, and tighten contract terms. Start the renewal process 90 days before expiration. Evaluate re-bid vs. renewal — even if you plan to stay with your current carrier, a competitive re-bid gives you negotiating leverage.