Why vis major matters to a first-time founder
The concept may affect whether a party is liable when an exceptional event prevents performance or causes loss. It is highly jurisdiction-specific and should not be treated as a universal escape clause. Contracts, governing law, foreseeability, prevention, notice, and efforts to reduce harm can all change the result.
Examples of vis major
A warehouse is destroyed by an unprecedented earthquake, making fulfilment impossible. Whether the operator is excused depends on the contract and governing law, including the event covered, notice given, insurance, and reasonable mitigation. A routine seasonal storm that the operator failed to prepare for may be treated differently.
Common misunderstanding
It is related to, but not always identical with, force majeure. Vis major is a legal concept often associated with irresistible external events, while force majeure commonly refers to a contractual clause allocating specified risks. Neither automatically excuses poor planning, financial difficulty, or every event outside a party’s control.
When to use it
Recognise the term when reviewing contracts or advice governed by a legal system that uses it. Define covered events and consequences clearly rather than relying on Latin. After disruption, preserve evidence, give required notices, mitigate losses, and obtain local legal advice before stopping performance or rejecting a claim.