This article describes the meaning of a hammer clause in a NY contractor general liability policy.
A hammer clause in NY construction insurance refers to an exclusion in a general contractor’s general liability policy. The exclusion can have bad implications in the event of a claim caused by a sub-contractor or independent contractor, or in the event of an action over.
This clause requires you, the GC, to verify, and be responsible for, the insurance and risk management program of any of your sub-contractors. The implications to you are that if a claim occurs that is caused by one of your sub-contractors, and your sub-contractor’s insurance does not comply with the terms of the hammer clause, your general liability policy insurance carrier may deny the claim.
This situation essentially puts conditions of your own business insurance coverage into the hands of your sub-contractors.
This is very dangerous… After all, how can you know 100% what your sub-contractor is doing with their insurance coverage?