Microplastics are a significant emerging environmental and public health risk. Businesses involved in manufacturing, packaging, and food production could see heightened scrutiny, with underwriters demanding more rigorous risk disclosures and sustainability practices. Regulatory developments, such as the EU microplastics regulation, may drive insurers to adjust policy wordings and exclusions. Litigation risk will only grow as public awareness evolves, leading to class actions and reputational damage. While litigation in this area has largely focused on greenwashing and public nuisance, the next steps would be personal injury claims, which is where the traditional issues around causation start to arise.  The industry should effect a wide review of exposures now to understand the long-tail risks microplastics present.