Can my insurance be cancelled after a major tower claim?

Yes, carriers can non-renew your policy at the end of the policy term based on claims experience. Mid-term cancellation is more restricted: most states only allow it for specific reasons (non-payment of premium, material misrepresentation, substantial change in risk). However, a major claim can trigger several adverse actions: (1) Non-renewal at the end of the current policy term, giving you the remaining policy period to find replacement coverage. (2) If the claim reveals a material misrepresentation in the application (undisclosed prior losses, inaccurate description of operations), the carrier may attempt mid-term cancellation or rescission. (3) Your other carriers (auto, umbrella, WC) may also non-renew even if the claim only involved GL, as they re-evaluate the overall risk. (4) Finding replacement coverage after a major claim in the small specialty tower market is difficult and expensive. The few carriers that write this class all share information through loss runs. In practice, carriers are more likely to non-renew after a pattern of claims than after a single large claim with otherwise clean history. However, a fatality with OSHA citations suggesting systemic safety failures may trigger immediate non-renewal at term. Maintain relationships with multiple broker markets so alternatives exist if your primary carrier exits.