241. Relationship between main contractor and sub-contractor.

By sub-letting part of the work, the main contractor impliedly contracts with the sub-contractor that he will not by any act or default of his own prevent the sub-contractor from performing his share of the work. Thus if, in consequence of the default of the main contractor, the employer forfeits the main contract and ousts the sub-contractor, the sub-contractor will, subject to the sub-contract terms, have a claim for damages against the main contractor1. The sub-contract may include a term under which the sub-contract will automatically terminate if the main contract is terminated, in which case the procedures for