The global mining insurance market is undergoing a period of accelerated softening, according to a new report from Willis.
Rates are declining, coverage options are expanding, and available capacity remains robust. The latest market review advises industry leaders to remain vigilant as exposures evolve and regulatory and geotechnical risks persist, recommending a strategic and technically rigorous approach to capitalise on current market conditions.
The report notes that total capacity for mining liability placements has increased for a third consecutive year. This growth is attributed to new market entrants and larger line sizes from existing insurers. Underwriters are increasingly viewing mining as a profitable sector that can help achieve ambitious gross written premium (GWP) targets.
Insurance for mining property damage and business interruption (PDBI) is seeing double-digit rate reductions, while international liability carriers are demonstrating greater flexibility on pricing, though not necessarily on coverage. Commodity-specific underwriting is becoming more common, with precious metals attracting favourable terms amid strong pricing.
William Fremlin-Key (pictured above), global mining and metals leader at Willis natural resources, said, “The mining insurance market is ripe for optimisation, but success hinges on proactive risk management. Data-driven planning, strategic insurance spend, and early engagement with insurers are essential for firms looking to mitigate risks and capitalise on soft market conditions.”
The casualty insurance market continues to show interest in precious metals and mineral mining, but coal operations face limited carrier participation and heightened scrutiny.
The market itself is experiencing mixed trends, with some segments softening while others remain under pressure. This is particularly evident in the United States, where ongoing litigation and social inflation are driving up excess liability pricing. Insurers are also increasingly cautious about exposures related to per- and polyfluoroalkyl substances (PFAS), which are now broadly excluded from many policies.
Emerging risks in the mining sector are prompting changes in insurance practices. Seismic activity, both mining-induced and natural, is leading to more exclusions and stricter underwriting. Flooding, driven by extreme rainfall, has become the most significant natural hazard, resulting in design changes. Tailings management is under increased scrutiny, with the Global Industry Standard on Tailings Management (GISTM) now serving as a baseline expectation for underwriters.
The cost of compliance is also on the rise, with standalone pollution policies now often required and costing between US$5,000 and US$100,000 for a US$2 million limit. This increase in compliance costs is a direct result of stricter environmental standards and the growing need for robust protection against pollution-related liabilities.
Delays in regulatory approvals are becoming more frequent, driven by complex regulations, ESG requirements, and the lack of global standards, which in turn slow project timelines. The risk of underinsurance is also rising in some regions, as liability limits may not be keeping pace with inflation and growing exposures.
Trends in mining insurance differ across key regions. In South Africa, property rates are softening, but cyber risks are increasing. North America is experiencing a decline in US property rates, ranging from −7.5% to −20%, while casualty lines are tightening.
Canada is facing stricter underwriting due to heap leach failures. In Asia, pricing remains steady, with ESG and technology-driven risk mitigation gaining traction. Latin America is seeing increased demand for captives, driven by environmental liability and political risk. In the Australia/Pacific region, climate risk and ESG regulations are having a significant impact on underwriting appetite.
Fremlin-Key noted that tools such as real-time monitoring, third-party reviews, and scenario modelling can help build resilience and inform response plans.
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