Actuarial Review of Group Health Insurance Pricing for Multinational Companies in Lagos

This study conducts an actuarial review of group health insurance pricing practices for multinational company schemes in Lagos, South West Nigeria. Multinational companies represent the highest-value segment of the Nigerian group health insurance market, with comprehensive employee benefit schemes covering large employee populations and dependants. The complex interaction of employee demographics, benefit design, provider network quality, and annual experience rating creates significant actuarial complexity in pricing these schemes. This study uses a combination of claims data from five health maintenance organizations and premium negotiation records from 20 multinational group schemes in Lagos for the period 2019 to 2023. Pricing methods including prospective experience rating, credibility theory weighting, and trend analysis are applied and compared against actual claims development. Actuarial adequacy is assessed using run-off analysis. Findings reveal that renewal premium rates for large multinational groups are typically well-supported by experience data, but small-to-medium group schemes show higher pricing variability and more frequent adverse development. Medical trend inflation, measured at an average of 24 percent per year, is systematically underestimated in most pricing models reviewed. The study concludes that health insurance pricing for multinational groups in Lagos requires more rigorous actuarial framework application, particularly in medical trend assumption setting. It recommends that HMOs hire qualified actuaries to lead renewal pricing processes and establish independent claims experience databases.

Keywords: group health insurance, actuarial pricing, experience rating, multinational companies, Lagos.